Chapon, L. C., Stock, C., Radaelli, P. G., Martin, C.
The weakly interacting S=1/2 dimers system Sr3Cr2O8 has been investigated by powder neutron diffraction and inelastic neutron scattering. Our data reveal a structural phase transition below room...
The effect of local dipole moments on the structure and lattice dynamics of K0.98Li0.02TaO3 (2008)
Wen, Jinsheng, Xu, Guangyong, Stock, C., Gehring, P. M., Zhong, Z., Boatner, L. A., ...
We present high energy x-ray (67 keV) and neutron scattering measurements on a single crystal of K$_{1-x}$Li$_x$TaO$_3$ for which the Li content ($x=0.02$) is less than $x_c = 0.022$, the critical...
Response of polar nanoregions in 68%Pb(Mg1/3Nb2/3)O3-32%PbTiO3 to a [001] electric field (2008)
Wen, Jinsheng, Xu, Guangyong, Stock, C., Gehring, P. M.
We report neutron diffuse scattering measurements on a single crystal of 68%Pb(Mg1/3Nb2/3)O3-32%PbTiO3. Strong diffuse scattering is observed at low temperatures. An external field applied along the...
Phase instability induced by polar nanoregions in a relaxor ferroelectric system (2008)
Xu, Guangyong, Wen, Jinsheng, Stock, C., Gehring, P. M.
Local inhomogeneities known as polar nanoregions (PNR) play a key role in governing the dielectric properties of relaxor ferroelectrics - a special class of material that exhibits an enormous...
Stock, C., Buyers, W. J. L., Yamani, Z., Tun, Z., Birgeneau, R. J., Liang, R., ...
Using neutron scattering we have determined the magnetic structure and fluctuations in the YBa2Cu3O6.35 superconductor (Tc=18 K). The long-range ordered collinear spins of the insulating...
Mikolajczyk, R.T., Maxwell, A.E., El, Ansari W., Naydenova, V., Stock, C., Ilieva, S., ...
BACKGROUND: Previous research indicated a higher prevalence of depressive symptoms among students from Eastern European countries than students from Western European countries. This difference was...
Spin resonance in the d-wave superconductor CeCoIn5 (2007)
Stock, C., Broholm, C., Hudis, J., Kang, H. J., Petrovic, C.
Neutron scattering is used to probe antiferromagnetic spin fluctuations in the d-wave heavy fermion superconductor CeCoIn$_{5}$ (T$_{c}$=2.3 K). Superconductivity develops from a state with slow...
Neutron and X-ray diffraction study of cubic [111] field cooled Pb(Mg1/3Nb2/3)O3 (2007)
Stock, C., Xu, Guangyong, Gehring, P. M., Luo, H., Zhao, X., Cao, H., ...
Neutron and x-ray diffraction techniques have been used to study the competing long and short-range polar order in the relaxor ferroelectric Pb(Mg$_{1/3}$Nb$_{2/3}$)O$_{3}$ (PMN) under a [111]...
Evidence for decay of spin-waves above the pseudogap in underdoped YBa2Cu3O6.35 (2007)
Stock, C., Cowley, R. A., Buyers, W. J. L., Coldea, R., Broholm, C., Frost, C. D., ...
The magnetic spectrum at high-energies in heavily underdoped YBa$_{2}$Cu$_{3}$O$_{6.35}$ (T$_{c}$=18 K) has been determined throughout the Brillouin zone. At low-energy the scattering forms a cone of...
Buyers, W. J. L., Stock, C., Yamani, Z., Birgeneau, R. J., Liang, R., Bonn, D., ...
Magnetic spins and charges interact strongly in high-temperature superconductors. New physics emerges as layers of copper oxide are tuned towards the boundary of the superconducting phase. As the...
The Anomalous Skin Effect in Single Crystal Relaxor Ferroelectric PZN-xPT and PMN-xPT (2006)
Xu, Guangyong, Gehring, P. M., Stock, C., Conlon, K.
X-ray and neutron scattering studies of the lead-based family of perovskite relaxors PZN-$x$PT and PMN-$x$PT have documented a highly unusual situation in which the near-surface region of a single...
Magnetic neutron scattering in hole doped cuprate superconductors (2006)
Birgeneau, R. J., Stock, C., Tranquada, J. M., Yamada, K.
A review is presented of the static and dynamic magnetic properties of hole-doped cuprate superconductors measured with neutron scattering. A wide variety of experiments are described with emphasis...
Damped Soft Phonons and Diffuse Scattering in 40PMN-60PT (2006)
Stock, C., Ellis, D., Swainson, I. P., Xu, Guangyong, Hiraka, H., Zhong, Z., ...
Using neutron elastic and inelastic scattering and high-energy x-ray diffraction, we present a comparison of 40% Pb(Mg$_{1/3}$Nb$_{2/3}$)O$_{3}$-60% PbTiO$_{3}$ (PMN-60PT) with pure...
Stock, C., Buyers, W. J. L., Yamani, Z., Broholm, C., Tun, Z., ...
We have mapped the neutron scattering spin spectrum at low-energies in YBa2Cu3O6.353 (Tc=18 K) where the doping ~0.06 is near the critical value (pc=0.055) for superconductivity. No coexistence with...
Welberry, T R, Gutmann, M J, Woo, H, Goossens, D J, Xu, G, Stock, C, ...
Stock, C., Buyers, W. J. L., Cowley, R. A., Clegg, P. S., Coldea, R., Frost, C. D., ...
We have investigated the spin fluctuations at energy transfers up to ~110 meV, well above the resonance energy (33 meV) in the YBa2Cu3O6.5 ortho-II superconductor using neutron time-of-flight and...
Enhancement of magnetic order in the incommensurate phase of Mg-doped CuGeO$_{3}$ (2004)
Stock, C., Wakimoto, S., Birgeneau, R. J., Danilkin, S., Klenke, J., Smeibidl, P., ...
We present elastic neutron scattering results at high magnetic fields for Mg-doped CuGeO$_{3}$. For low magnesium concentrations, where a spin-Peierls phase is present, we find an enhancement of the...
Conlon, K., Luo, H., Viehland, D., Li, J. F., Whan, T., Fox, J. H., ...
Spatially resolved neutron diffraction as a function of crystal depth in Pb(Mg$_{1/3}$Nb$_{2/3}$)O$_{3}$ reveals the presence of a distinct near-surface region. A dramatic change in both the lattice...
Stock, C., Luo, H., Viehland, D., Li, J. F., Swainson, I., Birgeneau, R. J., ...
The temperature and zone dependence of the lattice dynamics in Pb(Mg$_{1/3}$Nb$_{2/3}$)O$_{3}$ is characterized using neutron inelastic scattering. A strong correlation between the diffuse and phonon...
An Anomalous Phase in the Relaxor Ferroelectric Pb(Zn$_{1/3}$Nb$_{2/3}$)O$_3$ (2004)
Xu, Guangyong, Zhong, Z., Bing, Y., Stock, C., Shirane, G.
X-ray diffraction studies on a Pb(Zn$_{1/3}$Nb$_{2/3}$)O$_3$ (PZN) single crystal sample show the presence of two different structures. An outer-layer exists in the outer most $\sim$ 10 to 50~$\mu$m...
Stock, C., Buyers, W. J. L., Liang, R., Peets, D., Tun, Z., Bonn, D., ...
We describe the relation between spin fluctuations and superconductivity in a highly-ordered sample of YBaCu3O6.5 using both polarized and unpolarized neutron inelastic scattering. The spin...
Universal Static and Dynamic Properties of the Structural Transition in Pb(Zn1/3Nb2/3)O3 (2003)
Stock, C., Birgeneau, R. J., Wakimoto, S., Gardner, J. S., Chen, W., ...
The relaxors Pb(Zn$_{1/3}$Nb$_{2/3}$)O$_{3}$ (PZN) and Pb(Mg$_{1/3}$Nb$_{2/3}$)O$_{3}$ (PMN) have very similar properties based on the dielectric response around the critical temperature $T_{c}$...
Dynamic frustrated magnetism in Tb2Ti2O7 at 50 mK (2003)
Gardner, J S, Keren, A, Ehlers, G, Stock, C, Segal, E, Roper, J M, ...
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...
Ground State of Relaxor Ferroelectric $Pb(Zn_{1/3}Nb_{2/3})O_3$ (2002)
Xu, Guangyong, Zhong, Z., Bing, Y., Stock, C., Shirane, G.
High energy x-ray diffraction measurements on Pb(Zn$_{1/3}$Nb$_{2/3}$)O$_3$ (PZN) single crystals show that the system does not have a rhombohedral symmetry at room temperature as previously...
Mode-coupling and polar nanoregions in the relaxor ferroelectric Pb(Mg1/3Nb2/3)O3 (2002)
Wakimoto, S., Stock, C., Chen, W., Gehring, P. M., Shirane, G.
We present a quantitative analysis of the phonon lineshapes obtained by neutron inelastic scattering methods in the relaxor ferroelectric Pb(Mg1/3Nb2/3)O3 (PMN). Differences in the shapes and...
Neutron scattering search for static magnetism in oxygen ordered YBa2Cu3O6.5 (2002)
Stock, C., Buyers, W. J. L., Tun, Z., Liang, R., Peets, D., Bonn, D., ...
We present elastic and inelastic neutron scattering results on highly oxygen ordered YBa2Cu3O6.5 ortho-II. We find no evidence for the presence of ordered magnetic moments to a sensitivity of 0.003...
Wakimoto, S., Stock, C., Birgeneau, R. J., Chen, W., Buyers, W. J. L., ...
Neutron scattering measurements of the lowest-energy TO phonons in the relaxor Pb(Mg1/3Nb2/3)O3 (PMN) are reported for 10
Geers, A., Kappert, J., Stock, C., Temps, F., Wiebrecht, J., Li, X.
Author Institution: MPI f\""{u}r Str\""{o}mungsforschung, Bunsenstra\ss e 10
Race, iris color, and age-related macular degeneration.
Frank, R N, Puklin, J E, Stock, C, Canter, L A
PURPOSE: While most observers agree that age-related macular degeneration (AMD) is much more common in white persons than in persons of black African ancestry, the influence of iris color has been...
Functional role of Na+–HCO3− cotransport in migration of transformed renal epithelial cells
Schwab, A, Rossmann, H, Klein, M, Dieterich, P, Gassner, B, Neff, C, ...
Cell migration is crucial for immune defence, wound healing or formation of tumour metastases. It has been shown that the activity of the Na+–H+ exchanger (NHE1) plays an important role in cell...
Race, iris color, and age-related macular degeneration.
Frank, R N, Puklin, J E, Stock, C, Canter, L A
PURPOSE: While most observers agree that age-related macular degeneration (AMD) is much more common in white persons than in persons of black African ancestry, the influence of iris color has been...
Functional role of Na+–HCO3− cotransport in migration of transformed renal epithelial cells
Schwab, A, Rossmann, H, Klein, M, Dieterich, P, Gassner, B, Neff, C, ...
Cell migration is crucial for immune defence, wound healing or formation of tumour metastases. It has been shown that the activity of the Na+–H+ exchanger (NHE1) plays an important role in cell...
Hyperplasia of the exocrine pancreas after small bowel resection in the rat.
Haegel, P, Stock, C, Marescaux, J, Petit, B, Grenier, J F
The effect of a 90% small bowel resection on the exocrine pancreas was investigated over a three month period in adult Wistar rats. Control animals underwent a sham-resection consisting of a...