Ruixing Liang A, D. A. Bonn, W. N. Hardy, Janice C. Wynn, L. Lu C, ...
High-purity and homogeneous YBa2Cu3Oy single crystals with carrier doping level near the AFM-SC boundary have been obtained in the oxygen content range between y = 6.340 and 6.370. The crystals are...
Peets, D. C., Liang, Ruixing, Raudsepp, Mati, Hardy, W. N., Bonn, D. A.
Highly-perfect platelet single crystals of Tl_2Ba_2CuO_{6+d} (Tl-2201) were grown by a self-flux technique. A novel encapsulation scheme allowed the precursors to react prior to the sealing required...
Metal-insulator quantum critical point beneath the high Tc superconducting dome (2009)
Sebastian, Suchitra E., Harrison, N., Altarawneh, M. M., Mielke, C. H., Liang, Ruixing, Bonn, D. A., ...
An enduring question in correlated systems concerns whether superconductivity is favoured at a quantum critical point (QCP) characterised by a divergent quasiparticle effective mass. Despite such a...
Broken rotational symmetry in the pseudogap phase of a high-Tc superconductor (2009)
Daou, R., Chang, J., LeBoeuf, David, Cyr-Choiniere, Olivier, Laliberte, Francis, Doiron-Leyraud, Nicolas, ...
The pseudogap phase is a universal and fundamental aspect of cuprate high-Tc superconductors, yet its nature remains a mystery. Here we use the Nernst effect, a particularly sensitive probe of...
Possible Microscopic Doping Mechanism in Tl-2201 (2009)
Peets, D. C., Hawthorn, D. G., Liang, Ruixing, Bonn, D. A., Hardy, W. N.
X-ray absorption spectroscopy on oxygen-annealed, self-flux-grown single crystals of Tl-2201 suggests a microscopic doping mechanism whereby interstitial oxygens are attracted to copper substituted...
Thermo-Electric Study of Fermi Surface Reconstruction in YBa$_2$Cu$_3$O$_y$ (2009)
Chang, J., Daou, R., Proust, Cyril, LeBoeuf, David, Doiron-Leyraud, Nicolas, Laliberte, Francis, ...
The Seebeck and Nernst coefficients $S$ and $\nu$ of the high-$T_c$ superconductor YBa$_2$Cu$_3$O$_y$ (YBCO) were measured in a single crystal with a hole concentration $p = 0.12$ in magnetic fields...
Sebastian, Suchitra E., Harrison, N., Mielke, C. H., Liang, Ruixing, Bonn, D. A., Hardy, W. N., ...
We use quantum oscillation measurements to distinguish between spin and orbital components of the lowest energy quasiparticle excitations in YBa2Cu3O6.54, each of which couple differently to a...
Sonier, J. E., Pacradouni, V., Sabok-Sayr, S. A., Hardy, W. N., Bonn, D. A., Liang, R., ...
We present muon spin relaxation measurements on a large YBa2Cu3O6.6 single crystal in which two kinds of unusual magnetic order have been detected in the pseudogap region by neutron scattering. A...
Peets, D. C., Hawthorn, D. G., Shen, K. M., Kim, Young-June, Ellis, D. S., Zhang, H., ...
X-ray absorption spectra on the overdoped high-temperature superconductors Tl_2Ba_2CuO_{6+delta} (Tl-2201) and La_{2-x}Sr_xCuO_{4+delta} (LSCO) reveal a striking departure in the electronic structure...
Multiple frequencies in quantum oscillations from underdoped YBa_2Cu_3O_6.5 (2008)
Audouard, Alain, Jaudet, Cyril, Vignolles, David, Liang, Ruixing, Bonn, D. A., Hardy, W. N., ...
High-precision measurements of the de Haas-van Alphen effect in the underdoped high-temperature superconductor \Y reveal three distinct frequencies in the quantum oscillations spectra. Analysis based...
Huttema, W. A., Bobowski, J. S., Turner, P. J., Liang, Ruixing, Hardy, W. N., Bonn, D. A., ...
High resolution measurements of superfluid density and broadband quasiparticle conductivity have been used to probe the low energy excitation spectrum of nodal quasiparticles in underdoped YBCO....
Electron pockets in the Fermi surface of hole-doped high-Tc superconductors (2008)
LeBoeuf, David, Doiron-Leyraud, Nicolas, Levallois, Julien, Daou, R., Hussey, N. E., ...
High-temperature superconductivity occurs as copper oxides are chemically tuned to have a carrier concentration intermediate between their metallic state at high doping and their insulating state at...
Guikema, J. W., Bluhm, Hendrik, Bonn, D. A., Liang, Ruixing, Hardy, W. N., Moler, K. A.
We report scanning Hall probe microscopy of highly underdoped superconducting YBa_2Cu_3O_{6+x} with T_c ranging from 5 to 15 K which showed distinct flux bundles with less than one superconducting...
Hossain, M. A., Mottershead, J. D. F., Bostwick, A., McChesney, J. L., Rotenberg, E., Liang, R., ...
The discovery of quantum oscillations in the normal-state electrical resistivity of YBa2Cu3O6.5 provides the first evidence for the existence of Fermi surface (FS) pockets in an underdoped cuprate....
Sonier, J. E., Ilton, M., Pacradouni, V., Kaiser, C. V., Sabok-Sayr, S. A., Ando, Y., ...
We report that in YBa2Cu3Oy and La2-xSrxCuO4 there is a spatially inhomogeneous response to magnetic field for temperatures T extending well above the bulk superconducting transition temperature Tc....
Quantum oscillations and the Fermi surface in an underdoped high-Tc superconductor (2008)
Doiron-Leyraud, Nicolas, Proust, Cyril, LeBoeuf, David, Levallois, Julien, Bonnemaison, Jean-Baptiste, Liang, Ruixing, ...
Despite twenty years of research, the phase diagram of high transition- temperature superconductors remains enigmatic. A central issue is the origin of the differences in the physical properties of...
Xia, Jing, Schemm, Elizabeth, Deutscher, G., Kivelson, S.A., Bonn, D.A., Hardy, W.N., ...
The polar Kerr effect in the high-Tc superconductor YBa2Cu3O6+x was measured at zero magnetic field with high precision using a cyogenic Sagnac fiber interferometer. We observed nonzero Kerr...
de Haas-van Alphen oscillations in the underdoped cuprate YBa$_2$Cu$_3$O$_{6.5}$ (2007)
Jaudet, C., Vignolles, D., Audouard, A., Levallois, J., LeBoeuf, D., Doiron-Leyraud, N., ...
The de Haas-van Alphen effect was observed in the underdoped cuprate YBa$_2$Cu$_3$O$_{6.5}$ via a torque technique in pulsed magnetic fields up to 59 T. Above an irreversibility field of $\sim$30 T,...
Growth of High Quality YBCO Single Crystals Using BaZrO (2007)
Crucibles Ruixing, Using Bazro Crucibles, Ruixing Liang, D. A. Bonn, W. N. Hardy
High density BaZrO 3 ceramic crucibles have been successfully fabricated and used to grow high quality YBa 2 Cu 3 O 7-x single crystals by the BaO-CuO self flux method. The ceramic crucibles are...
Xia, Jing, Schemm, Elizabeth, Deutscher, G., Kivelson, S. A., Bonn, D. A., Hardy, W. N., ...
Polar Kerr effect in the high-Tc superconductor \YBCO was measured at zero magnetic field with high precision using a cyogenic Sagnac fiber interferometer. We observed non-zero Kerr rotations of...
Sonier, J. E., Callaghan, F. D., Ando, Y., Kiefl, R. F., Brewer, J. H., Kaiser, C. V., ...
Highly disordered magnetism confined to individual weakly interacting vortices is detected by muon spin rotation in two different families of high-transition-temperature superconductors, but only in...
Sonier, J. E., Sabok-Sayr, S. A., Callaghan, F. D., Kaiser, C. V., Pacradouni, V., Brewer, J. H., ...
We report on muon spin rotation measurements of the internal magnetic field distribution n(B) in the vortex solid phase of YBa2Cu3Oy (YBCO) single crystals, from which we have simultaneously...
Oxygen Chain Disorder as the Weak Scattering Source in YBa$_2$Cu$_3$O$_{6.50}$ (2006)
Bobowski, J. S., Turner, P. J., Harris, R., Liang, Ruixing, Bonn, D. A., Hardy, W. N.
The microwave conductivity of an ultra-pure single crystal of YBa$_2$Cu$_3$O$_{6.50}$ has been measured deep in the superconducting state as a continuous function of frequency from $0.5\to20$ GHz....
Avoided Quantum Criticality in YBa_2Cu_3O_y and La_{2-x}Sr_xCuO_4 (2006)
Sonier, J. E., Callaghan, F. D., Ando, Y., Kiefl, R. F., Brewer, J. H., Kaiser, C. V., ...
Spin-glass magnetism confined to individual weakly interacting vortices is detected in two different families of high-transition-temperature (T_c) superconductors, but only in samples on the...
Peets, D. C., Mottershead, J. D. F., Wu, B., Elfimov, I. S., Liang, R., Hardy, W. N., ...
Single-particle spectroscopic probes, such as scanning tunneling and angle-resolved photoemission spectroscopy (ARPES), have provided us with crucial insights into the complex electronic structure of...
Yamani, Z., Statt, B. W., MacFarlane, W. A., Liang, Ruixing, Bonn, D. A., Hardy, W. N.
Nuclear magnetic resonance (NMR) measurements of CuO chains of detwinned Ortho-II YBa$_2$Cu$_3$O$_{6.5}$ (YBCO6.5) single crystals reveal unusual and remarkable properties. The chain Cu resonance...
Onset of a boson mode at superconducting critical point of underdoped YBa2Cu3Oy (2006)
Doiron-Leyraud, Nicolas, Sutherland, Mike, Li, S. Y., Taillefer, Louis, Liang, Ruixing, Bonn, D. A., ...
The thermal conductivity $\kappa$ of underdoped \Y was measured in the $T \to 0$ limit as a function of hole concentration $p$ across the superconducting critical point at $p_{SC}$ = 5.0%. ``Time...
Harris, R., Turner, P. J., Kamal, Saeid, Hosseini, A. R., Dosanjh, P., Mullins, G. K., ...
Extensive measurements of the microwave conductivity of highly pure and oxygen-ordered \YBCO single crystals have been performed as a means of exploring the intrinsic charge dynamics of a d-wave...
Insulating transition in the flux-flow resistivity of a high temperature superconductor (2005)
Morgan, Benjamin, Broun, D. M., Liang, Ruixing, Bonn, D. A., Hardy, W. N., Waldram, J. R.
Measurements of the DC resistivity of under-doped cuprate superconductors have revealed a metal--insulator transition at low temperatures when superconductivity is suppressed by a very large magnetic...
Evaluation of CuO2 plane hole doping in YBa2Cu3O6+x single crystals (2005)
Liang, Ruixing, Bonn, D. A., Hardy, W. N.
The electron hole concentration p in the CuO2 planes of YBa2Cu3O6+x (YBCO) has been evaluated using the unit cell length in the c-direction together with a simple estimation for p in the chain oxygen...
Apparatus for high resolution microwave spectroscopy in strong magnetic fields (2005)
Huttema, W. A., Morgan, B., Turner, P. J., Hardy, W. N., Zhou, Xiaoqing, Bonn, D. A., ...
We have developed a low temperature, high-resolution microwave surface impedance probe that is able to operate in high static magnetic fields. Surface impedance is measured by cavity perturbation of...
Superfluid Density in a Highly Underdoped YBCO Superconductor (2005)
Broun, D. M., Huttema, W. A., Turner, P. J., Ozcan, S., Morgan, B., Liang, Ruixing, ...
The superfluid density rho_s(T) = 1/lambda^2(T) has been measured at 2.64 GHz in highly underdoped YBCO, at 37 dopings with T_c between 3 K and 17 K. Within limits set by the transition width Delta...
Sonier, J. E., Callaghan, F. D., Brewer, J. H., Hardy, W. N., Bonn, D. A., Liang, R.
This paper has been withdrawn by the authors, because of results obtained from a more exhaustive study of both YBa_2Cu_3O_y and La_{2-x}Sr_xCuO_4 (see cond-mat/0610051).
The a-axis optical conductivity of detwinned ortho-II YBa_2Cu_3O_6.50 (2005)
Hwang, J., Yang, J., Timusk, T., Sharapov, S. G., Carbotte, J. P., Bonn, D. A., ...
The a-axis optical properties of a detwinned single crystal of YBa_2Cu_3O_6.50 in the ortho II phase (Ortho II Y123, T_c= 59 K) were determined from reflectance data over a wide frequency range (70 -...
Fermi Surface and Quasiparticle Excitations of overdoped Tl2Ba2CuO6+d by ARPES (2005)
Plate, M., Mottershead, J. D. F., Elfimov, I. S., Peets, D. C., Liang, Ruixing, Bonn, D. A., ...
The electronic structure of the high-T_c superconductor Tl2Ba2CuO6+d is studied by ARPES. For a very overdoped Tc=30K sample, the Fermi surface consists of a single large hole pocket centered at...
Doping dependence of the superconducting gap in Tl_2Ba_2CuO_{6+delta} from heat transport (2005)
Hawthorn, D. G., Li, S. Y., Sutherland, M., Boaknin, Etienne, Hill, R. W., Proust, C., ...
We present low-temperature thermal conductivity measurements on the cuprate Tl_2Ba_2CuO_{6+delta} throughout the overdoped regime. In the T -> 0 limit, the thermal conductivity due to d-wave nodal...
Delocalized fermions in underdoped cuprates (2005)
Sutherland, Mike, Li, S. Y., Hawthorn, D. G., Hill, R. W., Ronning, F., Tanatar, M. A., ...
Low temperature heat transport was used to investigate the ground state of high-purity single crystals of the lightly-doped cuprate YBa$_{2}$Cu$_{3}$O$_{6.33}$. Samples were measured on either side...
Universal scaling relation in high-temperature superconductors (2004)
Homes, C. C., Dordevic, S. V., Strongin, M., Bonn, D. A., Liang, Ruixing, Hardy, W. N., ...
Scaling laws express a systematic and universal simplicity among complex systems in nature. For example, such laws are of enormous significance in biology. Scaling relations are also important in the...
Zooming-in on the charge ordering in YBa2Cu3O6.5 (2004)
Feng, D. L., Rusydi, A., Abbamonte, P., Venema, L., Elfimov, I., Liang, R., ...
We report direct evidence of charge/orbital ordering of low energy electronic states of $Cu$ in YBa$_2$Cu$_3$O$_{6+x}$ ortho-II phase in both the $CuO_3$ chain and the CuO$_2$ plane. Huge enhancement...
Hosseini, A., Broun, D. M., Sheehy, D. E., Davis, T. P., Franz, M., Liang, Ruixing, ...
In the cuprate superconductor $YBa_2Cu_3O_{6+x}$, hole doping in the $CuO_2$ layers is controlled by both oxygen content and the degree of oxygen-ordering. At the composition $\rm YBa_2Cu_3O_{6.35}$,...
Coherence, incoherence and scaling along the c axis of YBa_2Cu_3O_{6+x} (2003)
Homes, C. C., Dordevic, S. V., Bonn, D. A., Liang, R., Hardy, W. N., Timusk, T.
The optical properties of single crystals of YBa_2Cu_3O_{6+x} have been examined along the c axis above and below the critical temperature (T_c) for a wide range of oxygen dopings. The temperature...
Pereg-Barnea, T., Turner, P. J., Harris, R., Mullins, G. K., Bobowski, J. S., Raudsepp, M., ...
Zero-field electron spin resonance (ESR) of dilute Gd ions substituted for Y in the cuprate superconductor YBa$_2$Cu$_3$O$_{\rm 6+y}$ is used as a novel technique for measuring the absolute value of...
Broun, D. M., Turner, P. J., Mullins, G. K., Sheehy, D. E., Zheng, X. G., Kim, S. K., ...
We report microwave surface impedance measurements made on a single crystal of PrOs_4Sb_12 across the frequency range 0.5 to 21 GHz. The penetration depth data provide clear thermodynamic evidence...
Diffusion of Nonequilibrium Quasiparticles in a Cuprate Superconductor (2003)
Gedik, N., Orenstein, J., Liang, Ruixing, Bonn, D. A., Hardy, W. N.
We report a transport study of nonequilibrium quasiparticles in a high-Tc cuprate superconductor using the transient grating technique. Low-intensity laser excitation (at photon energy 1.5 eV) was...
Single-quasiparticle stability and quasiparticle-pair decay in YBa2Cu3O6.5 (Ortho II) (2003)
Gedik, N., Blake, P., Spitzer, R. C., Orenstein, J., Liang, Ruixing, Bonn, D. A., ...
We report results and analysis of time-resolved photoinduced reflectivity experiments on the cuprate superconductor YBa2Cu3O6.5. The sample, which has Tc=45 K, was characterized by a high degree of...
Turner, P. J., Broun, D. M., Kamal, Saeid, Hayden, M. E., Bobowski, J. S., Harris, R., ...
A novel low temperature bolometric method has been devised and implemented for high-precision measurements of the microwave surface resistance of small single-crystal platelet samples having very low...
Transport in Ultraclean YBa$_2$Cu$_3$O$_7$: neither Unitary nor Born Impurity Scattering (2003)
Hill, R. W., Lupien, Christian, Sutherland, M., Boaknin, Etienne, Hawthorn, D. G., Proust, Cyril, ...
The thermal conductivity of ultraclean YBa$_2$Cu$_3$O$_7$ was measured at very low temperature in magnetic fields up to 13 T. The temperature and field dependence of the electronic heat conductivity...
Doping dependence of superconducting gap in YBa_2Cu_3O_y from universal heat transport (2003)
Sutherland, Mike, Hawthorn, D. G., Hill, R. W., Ronning, F., Wakimoto, S., Zhang, H., ...
Thermal transport in the T -> 0 limit was measured as a function of doping in high-quality single crystals of the cuprate superconductor YBa_2Cu_3O_y. The residual linear term kappa_0/T is found to...
Sum rules and energy scales in the high-temperature superconductor YBa2Cu3O6+x (2003)
Homes, C. C., Dordevic, S. V., Bonn, D. A., Liang, Ruixing, Hardy, W. N.
The Ferrell-Glover-Tinkham (FGT) sum rule has been applied to the temperature dependence of the in-plane optical conductivity of optimally-doped YBa_2Cu_3O_{6.95} and underdoped YBa_2Cu_3O_{6.60}....
Sutherland, Mike, Hawthorn, D. G., Hill, R. W., Ronning, F., Wakimoto, S., Zhang, H., ...
Heat transport in the cuprate superconductors YBa$_2$Cu$_3$O$_{y}$ and La$_{2-x}$Sr$_x$CuO$_4$ was measured at low temperatures as a function of doping. A residual linear term kappa_{0}/T is observed...
Doping dependence of superconducting gap in Yba2Cu3Oy from universal heat transport (2003)
Sutherland, M., Hawthorn, D.G., Hill, R.W., Ronning, F., Wakimoto, S., Zhang, H., ...
Growth of Orthorhombic Tl-2201 Single Crystals by the Self-Flux Method (2002)
Peets, D. C., Liang, Ruixing, Bonn, D. A., Hardy, W. N., Raudsepp, M.
This article's content has now been absorbed into cond-mat/0609250, which supercedes it.
Top-Seeded Melt-Growth of YBa_2Cu_3O_x Crystals for Neutron Diffraction Studies (2002)
Peets, D. C., Liang, Ruixing, Stock, C., Buyers, W. J. L., Tun, Z., Taillefer, L., ...
We have grown cubic centimetre-size crystals of YBa2Cu3Ox suitable for neutron studies, by a top-seeded melt-growth technique. Growth conditions were optimized with an eye toward maximizing phase...
The high-field phase diagram of the cuprates derived from the Nernst effect (2002)
Wang, Yayu, Ong, N. P., Xu, Z. A., Kakeshita, T., Uchida, S., Bonn, D. A., ...
Measurements of the Nernst signal in the vortex-liquid state of the cuprates to high fields (33 T) reveal that vorticity extends to very high fields even close to the zero-field critical temperature...
Evidence for Static Magnetism in the Vortex Cores of Ortho-II YBa$_2$Cu$_3$O$_{6.50}$ (2001)
Miller, R. I., Kiefl, R. F., Brewer, J. H., Sonier, J. E., Chakhalian, J., Dunsiger, S., ...
Evidence for static alternating magnetic fields in the vortex cores of underdoped YBa$_2$Cu$_3$O$_{6+x}$ is reported. Muon spin rotation measurements of the internal magnetic field distribution of...
Liang, Ruixing, Bonn, D. A., Hardy, W. N., Wynn, Janice C., Moler, K. A., Lu, L., ...
High-purity and homogeneous YBa2Cu3Oy single crystals with carrier doping level near the AFM-SC boundary have been obtained in the oxygen content range between y = 6.340 and 6.370. The crystals are...
Turner, P. J., Harris, R., Kamal, Saeid, Hayden, M. E., Broun, D. M., Morgan, D. C., ...
There has long been a discrepancy between microwave conductivity measurements in high temperature superconductors and the conductivity spectrum expected in the simplest models for impurity scattering...
Sonier, J. E., Brewer, J. H., Kiefl, R. F., Heffner, R. H., Poon, K., Stubbs, S. L., ...
Zero-field muon spin relaxation (ZF-$\mu$SR) measurements were undertaken on under- and overdoped samples of superconducting YBa$_2$Cu$_3$O$_{6+x}$ to determine the origin of the weak static...
Photoinduced Changes of Reflectivity in Single Crystals of YBa2Cu3O6.5 (Ortho II) (2001)
Segre, G. P., Gedik, N., Orenstein, J., Bonn, D. A., Liang, Ruixing, Hardy, W. N.
We report measurements of the photoinduced change in reflectivity of an untwinned single crystal of YBa2Cu3O6.5 in the ortho II structure. The decay rate of the transient change in reflectivity is...
Dulic, Diana, Hak, J., Hardy, W. N., Koshelev, A. E., Liang, Ruixing, ...
Infrared spectroscopy has been used to investigate the temperature dependence and c-axis magnetic field dependence of the Josephson plasma resonance in optimally doped Tl2Ba2CaCu2O8 thin films, and...
Superconducting Gap and Strong In-Plane Anisotropy in Untwinned YBa2Cu3O7-d (2001)
Lu, D. H., Feng, D. L., Armitage, N. P., Shen, K. M., Damascelli, A., Kim, C., ...
With significantly improved sample quality and instrumental resolution, we clearly identify in the (pi,0) ARPES spectra from YBa2Cu3O6.993, in the superconducting state, the long-sought...
Limits on Spin-Charge Separation from h/2e Fluxoids in Very Underdoped YBa2Cu3O6 + x (2001)
Bonn, D. A., Gardner, B. W., Liang, Ruixing, Lin, Yu-Ju, Wynn, J. C.
Giant Enhancement of the Thermal Hall Conductivity kappaxy in the Superconductor YBa2Cu3O7 (2001)
Anderson, P. W., Bonn, D. A., Hardy, W. N., Liang, R., Ong, N. P., Zhang, Y.
Zhang, Y., Ong, N. P., Anderson, P. W., Bonn, D. A., Liang, R., Hardy, W. N.
In high-purity crystals of YBa_2Cu_3O_7, the quasiparticle (qp) lifetime \tau and the (weak-field) thermal Hall conductivity \kappa_{xy} undergo dramatic increases below 90K. We present a detailed...
Giant Peak Effect Observed in Ultrapure YBCO Crystal (1999)
Shi, Jing, Ling, X. S., Liang, Ruixing, Bonn, D. A., Hardy, W. N.
A giant peak in the temperature dependence of the screening current is observed in the ac magnetic response of an ultra-pure YBa$_2$Cu$_3$O$_{6.993}$ crystal in a magnetic field. At H = 2.0 T ({\bf...
Microwave Conductivity due to Impurity Scattering in a d-wave Superconductor (1999)
Berlinsky, A. J., Bonn, D. A., Harris, R., Kallin, C.
The self-consistent t-matrix approximation for impurity scattering in unconventional superconductors is used to interpret recent measurements of the temperature and frequency dependence of the...
Melting and Dimensionality of the Vortex Lattice in Underdoped YBa2Cu3O6.60 (1999)
Sonier, J. E., Brewer, J. H., Kiefl, R. F., Bonn, D. A., Chakhalian, J., Dunsiger, S. R., ...
Muon spin rotation measurements of the magnetic field distribution in the vortex state of the oxygen deficient high-Tc superconductor YBa{2}Cu{3}O{6.60} reveal a vortex-lattice melting transition at...
Field Induced Reduction of the Low Temperature Superfluid Density in YBa2Cu3O6.95 (1999)
Sonier, J. E., Brewer, J. H., Kiefl, R. F., Morris, G. D., Miller, R. I., Bonn, D. A., ...
A novel high magnetic field (8 T) spectrometer for muon spin rotation has been used to measure the temperature dependence of the in-plane magnetic penetration depth in YBa2Cu3O6.95. At low H and low...
Sisson, D. L., Doettinger, S. G., Kapitulnik, A., Liang, R., Bonn, D. A., Hardy, W. N.
The magnetic field dependence of the specific heat of Zn-doped single crystals of YBa_{2}Cu_3O_{6.95} was measured between 2 and 10 K and up to 8 Tesla. Doping levels of 0, 0.15%, 0.31%, and 1% were...
Microwave Spectroscopy of Thermally Excited Quasiparticles in YBa_2Cu_3O_{6.99} (1998)
Hosseini, A., Harris, R., Kamal, Saeid, Dosanjh, P., Preston, J., Liang, Ruixing, ...
We present here the microwave surface impedance of a high purity crystal of $YBa_2Cu_3O_{6.99}$ measured at 5 frequencies between 1 and 75 GHz. This data set reveals the main features of the...
Bidinosti, C. P., Hardy, W. N., Bonn, D. A., Liang, Ruixing
We present measurements of the magnetic field dependence of the penetration depth Lambda(H) for untwinned YBa_2Cu_3O_6.95 for temperatures from 1.2 to 70 K in dc fields up to 42 gauss and directions...
Kamal, S., Liang, Ruixing, Hosseini, A., Bonn, D. A., Hardy, W. N.
We have succeeded in growing very high purity (99.995%) YBa_2Cu_3O_{7-delta} crystals in BaZrO_3 crucibles and have measured Delta-lambda(T) and R_s(T) at 1 GHz in crystals with various oxygen...
c-axis electrodynamics of ybco (1998)
Hosseini, A., Kamal, S., Bonn, D. A., Liang, R., Hardy, W. N.
New measurements of surface impedance in ybco show that the c-axis penetration depth and conductivity below Tc exhibit behaviour different from that observed in the planes. The c-axis penetration...
Sonier, J. E., Brewer, J. H., Kiefl, R. F., Bonn, D. A., Dunsiger, S. R., Hardy, W. N., ...
The internal field distribution in the vortex state of YBa2Cu3O6.60 is shown to be a sensitive measure of both the magnetic penetration depth and the vortex-core radius. The temperature dependence of...
Homes, C. C., Timusk, T., Bonn, D. A., Liang, R., Hardy, W. N.
The reflectance of high-quality, unpolished single crystals of YBa_2Cu_3O_{6+x}, for the doping range x=0.50 -> 0.95, has been measured with radiation polarized along the c axis from approx 50...
Optical phonons along the c axis of YBa_2Cu_3O_{6+x}, for x=0.5 -> 0.95 (1995)
Homes, C. C., Timusk, T., Bonn, D. A., Liang, R., Hardy, W. N.
The c-axis polarized phonon spectra of single crystals of YBCO_{6+x} have been measured for the doping range x=0.5 -> 0.95, between 10 K and 300 K. The low background electronic conductivity,...
Microwave determination of the quasiparticle scattering time in YBa2Cu3O6.95 (1993)
Bonn, D. A., Liang, R., Riseman, T. M., Baar, D. J., Morgan, D. C, Zhang, K., ...
We report microwave surface resistance (Rs) measurements on two very-high-quality YBa2Cu3O6.95 crystals which exhibit extremely low residual loss at 1.2 K (2-6 μΩ at 2 GHz), a broad, reproducible...
Microwave determination of the quasiparticle scattering time in YBa2Cu3O6.95 (1993)
Bonn, D. A., Liang, R., Riseman, T. M., Baar, D. J., Morgan, D. C, Zhang, K., ...
We report microwave surface resistance (Rs) measurements on two very-high-quality YBa2Cu3O6.95 crystals which exhibit extremely low residual loss at 1.2 K (2-6 μΩ at 2 GHz), a broad, reproducible...