Disordering of InGaN/GaN Superlattices After High-Pressure Annealing (2008)
McCluskey, Matthew D., Romano, Linda T., Krusor, B. S., Hofstetter, Daniel, Bour, David P., Kneissl, Michael, ...
Interdiffusion of In and Ga is observed in InGaN multiple-quantum-well superlattices for annealing temperatures of 1250 to 1400°C. Hydrostatic pressures of up to 15 kbar were applied during the...
Disordering of InGaN/GaN Superlattices After High-Pressure Annealing (2008)
McCluskey, Matthew D., Romano, Linda T., Krusor, B. S., Hofstetter, Daniel, Bour, David P., Kneissl, Michael, ...
Interdiffusion of In and Ga is observed in InGaN multiple-quantum-well superlattices for annealing temperatures of 1250 to 1400°C. Hydrostatic pressures of up to 15 kbar were applied during the...
THE MOLECULAR MEASURING MACHINE (2008)
J. Kramar, J. Jun, W. Penzes, F. Scire, C. Teague, J. Villarrubia, ...
To help meet the measurement needs of industries preparing to manufacture future generations of nanoelectronic devices and circuits, the National Institute of Standards and Technology (NIST) has...
Phonon dispersion and lifetimes in MgB2 (2006)
Shukla, Abhay, Calandra, Matteo, D'Astuto, Matteo, Lazzeri, Michele, Mauri, Francesco, Bellin, Christophe, ...
We measure phonon dispersion and linewidth in a single crystal of MgB_2 along the Gamma-A, Gamma-M and A-L directions using inelastic X-Ray scattering. We use Density Functional Theory to compute the...
Measuring the Penetration Depth Anisotropy in MgB$_2$ using Small-Angle Neutron Scattering (2005)
Pal, D., DeBeer-Schmitt, L., Bera, T., Cubitt, R., Dewhurst, C. D., Jun, J., ...
Using small-angle neutron scattering we have measured the misalignment between an applied field of 4 kOe and the flux-line lattice in MgB$_2$, as the field is rotated away from the c axis by an angle...
Adaptive inventory control models for supply chain management (2005)
Kim, Y.D., Kim, C.O., Jun, J., Baek, J.K., Smith, Robert L.
Uncertainties inherent in customer demands make it difficult for supply chains to achieve just-in-time inventory replenishment, resulting in loosing sales opportunities or keeping excessive...
Al substitution in MgB2 crystals: influence on superconducting and structural properties (2004)
Karpinski, J., Zhigadlo, N. D., Schuck, G., Kazakov, S. M., Batlogg, B., Rogacki, K., ...
Single crystals of Mg1-xAlxB2 have been grown at a pressure of 30 kbar using the cubic anvil technique. Precipitation free crystals with x < 0.1 were obtained as a result of optimization of already...
Gonnelli, R. S., Daghero, D., Calzolari, A., Ummarino, G. A., Dellarocca, Valeria, Stepanov, V. A., ...
We report the results of the first directional point-contact measurements in Mg(B_{1-x}C_{x})_2 single crystals with 0.047
Gonnelli, R. S., Daghero, D., Ummarino, G. A., Calzolari, A., Dellarocca, Valeria, Stepanov, V. A., ...
We present the results of directional point-contact spectroscopy in state-of-the-art Mg_{1-x}Al_xB_2 and Mg(B_{1-y}C_{y})_2 single crystals produced at ETH, Zurich. Fitting the conductance curves of...
Anisotropy and internal field distribution of MgB2 in the mixed state at low temperatures (2004)
Angst, M., Di Castro, D., Eshchenko, D. G., Khasanov, R., Kohout, S., Savic, I. M., ...
Magnetization and muon spin relaxation on MgB2 were measured as a function of field at 2 K. Both indicate an inverse-squared penetration depth strongly decreasing with increasing field H below about...
Carbon substitution in MgB2 single crystals: structural and superconducting properties (2004)
Kazakov, S. M., Puzniak, R., Rogacki, K., Mironov, A. V., Zhigadlo, N. D., Jun, J., ...
Growth of carbon substituted magnesium diboride Mg(B1-xCx)2 single crystals with 0
Puzniak, R., Angst, M., Szewczyk, A., Jun, J., Kazakov, S. M., Karpinski, J.
The upper critical field Hc2||c(0) of 85 kOe in Mg(B0.94C0.06)2 single crystals, determined from torque measurements, is more than twice as large as that one of 31 kOe in unsubstituted MgB2....
Gonnelli, R. S., Daghero, D., Calzolari, A., Ummarino, G. A., Dellarocca, Valeria, Stepanov, V. A., ...
We present the results of directional point-contact measurements in MgB_2 single crystals, in magnetic fields up to 9 T parallel to the c axis. By fitting the conductance curves of our point contacts...
Gonnelli, R S, Daghero, D, Ummarino, G A, Della Rocca, V, Calzolari, A, Stepanov, V A, ...
The results of the first directional point-contact measurements in MgB2 single crystals, in the presence of magnetic fields up to 9 T either parallel or perpendicular to the ab planes, are presented....
Gonnelli, R. S., Daghero, D., Ummarino, G. A., Dellarocca, Valeria, Calzolari, A., Stepanov, V. A., ...
The results of the first directional point-contact measurements in MgB2 single crystals, in the presence of magnetic fields up to 9 T either parallel or perpendicular to the ab planes, are presented....
Perkins, G. K., Bugoslavsky, Y., Caplin, A . D., Moore, J., Tate, T. J., Gwilliam, R., ...
We present magnetisation data on crystalline and polycrystalline MgB2 before and after irradiation with ~1MeV protons. In the virgin crystal the critical current density is below our noise floor of...
Single crystal growth and properties of MgB2 and Mg(B1-xCx)2 (2003)
Kazakov, S. M., Karpinski, J., Jun, J., Geiser, P., Zhigadlo, N. D., Puzniak, R., ...
Single crystals of MgB2 and Mg(B1-xCx)2 have been grown using cubic anvil technique. Tc values vary in a wide range (39-9 K) with carbon content varying from 0 up to 16%. Using SiC as the precursor...
MgB2 and Mg1-xAlxB2 single crystals: high-pressure growth and physical properties (2003)
Karpinski, J., Kazakov, S. M., Jun, J., Zhigadlo, N. D., Angst, M., Puzniak, R., ...
Single crystals of MgB2 have been grown with a high-pressure cubic anvil technique. They grow via the peritectic decomposition of the MgNB9 ternary nitride. The crystals are of a size up to...
Anisotropic properties of MgB2 by torque magnetometry (2003)
Angst, M., Di Castro, D., Puzniak, R., Wisniewski, A., Jun, J., Kazakov, S. M., ...
Anisotropic properties of superconducting MgB2 obtained by torque magnetometry are compared to theoretical predictions, concentrating on two issues. Firstly, the angular dependence of Hc2 is shown to...
Single crystal growth of MgB2 and thermodynamics of Mg-B-N system at high pressure (2003)
Karpinski, J., Kazakov, S. M., Jun, J., Angst, M., Puzniak, R., Wisniewski, A., ...
Single crystals of MgB2 have been grown at high pressure via the peritectic decomposition of MgNB9. The crystals are of a size up to 1.5x0.9x0.2 mm3 with a weight up to 0.23 mg, and typically have...
Phonon dispersion and lifetimes in MgB2 (2003)
Shukla, Abhay, Calandra, Matteo, D'Astuto, Matteo, Lazzeri, Michele, Mauri, Francesco, Bellin, Christophe, ...
We measure phonon dispersion and linewidth in a single crystal of MgB_2 along the Gamma-A, Gamma-M and A-L directions using inelastic X-Ray scattering. We use Density Functional Theory to compute the...
Phonon dispersion and lifetimes in MgB2 (2003)
Shukla, Abhay, Calandra, Matteo, D'Astuto, Matteo, Lazzeri, Michele, Mauri, Francesco, Bellin, Christophe, ...
We measure phonon dispersion and linewidth in a single crystal of MgB_2 along the Gamma-A, Gamma-M and A-L directions using inelastic X-Ray scattering. We use Density Functional Theory to compute the...
Angst, M., Puzniak, R., Wisniewski, A., Roos, J., Keller, H., Miranovic, P., ...
The angular and temperature dependence of the upper critical field Hc2 in MgB2 was determined from torque magnetometry measurements on single crystals. The Hc2 anisotropy gamma_H was found to...
Point-contact spectroscopy in MgB2 single crystals in magnetic field (2002)
Daghero, D., Gonnelli, R. S., Ummarino, G. A., Stepanov, V. A., Jun, J., Kazakov, S. M., ...
We present the results of a spectroscopic study of state-of-the-art MgB2 single crystals, carried out by using a modified point-contact technique. The use of single crystals allowed us to obtain...
Gonnelli, R. S., Daghero, D., Ummarino, G. A., Stepanov, V. A., Jun, J., Kazakov, S. M., ...
Directional point-contact spectroscopy measurements were performed for the first time in state-of-the-art MgB_2 single crystals. The selective suppression of the superconductivity in the "pi" band by...
Observation of vortex structure in MgB$_2$ single crystals by Bitter decoration technique (2002)
Vinnikov, L. Ya., Karpinski, J., Kazakov, S. M., Jun, J., Anderegg, J., Bud'ko, S. L., ...
We report the observation of superconducting vortices in pure and lightly Al doped MgB$_2$ single crystals. Low field experiments allow for the estimation of the London penetration depth, lambda ~...
Scanning Tunneling Spectroscopy on Single Crystal MgB2 (2002)
Eskildsen, M. R., Kugler, M., Levy, G., Tanaka, S., Jun, J., Kazakov, S. M., ...
We report on the results of scanning tunneling spectroscopy measurements on single crystals of Mg2. Tunneling was performed both parallel and perpendicular to the crystalline c-axis. In the first...
Phonon dispersion and lifetimes in MgB2 (2002)
Shukla, Abhay, Calandra, Matteo, D'Astuto, Matteo, Lazzeri, Michele, Mauri, Francesco, Bellin, Christophe, ...
We measure phonon dispersion and linewidth in a single crystal of MgB_2 along the Gamma-A, Gamma-M and A-L directions using inelastic X-Ray scattering. We use Density Functional Theory to compute the...
Gonnelli, R. S., Daghero, D., Ummarino, G. A., Stepanov, V. A., Jun, J., Kazakov, S. M., ...
We present the results of the first directional point-contact spectroscopy experiments in high-quality MgB_2 single crystals. Due to the directionality of the current injection into the samples, the...
Vortex Imaging in the pi-Band of Magnesium Diboride (2002)
Eskildsen, M. R., Kugler, M., Tanaka, S., Jun, J., Kazakov, S. M., Karpinski, J., ...
We report scanning tunneling spectroscopy imaging of the vortex lattice in single crystalline MgB2. By tunneling parallel to the c-axis, a single superconducting gap (Delta = 2.2 meV) associated with...
MgB2 single crystals: high pressure growth and anisotropic properties (2002)
Karpinski, J., Angst, M., Jun, J., Kazakov, S. M., Puzniak, R., Wisniewski, A., ...
Single crystals of MgB2 with a size up to 1.5x0.9x0.2 mm3 have been grown with a high pressure cubic anvil technique. The crystal growth process is very peculiar and involves an intermediate nitride,...
Magneto-optical reflectivity of superconducting MgB2 single crystals (2002)
Perucchi, A., Degiorgi, L., Jun, J., Angst, M., Karpinski, J.
We present magneto-optical reflectivity results in the basal-plane of the hexagonal $MgB_2$. The data were collected on a mosaic of $MgB_2$ single crystals with $T_{c}=38 ~K$ from the ultraviolet...
Disorder-induced Phase Transition of Vortex Matter in MgB2 (2002)
Angst, M., Puzniak, R., Wisniewski, A., Jun, J., Kazakov, S. M., Karpinski, J.
Measurements of single crystalline MgB2 with torque magnetometry in fields up to 90 kOe reveal a sharp peak in the irreversible torque at about 0.85 Hc2. In the region between peak onset and maximum,...
Super-conducting critical fields and anisotropy of a MgB2 single crystal (2002)
Perkins, G. K., Moore, J., Bugoslavsky, Y., Cohen, L. F., Jun, J., Kazakov, S. M., ...
Despite the intense activity in the year since the discovery of superconductivity in MgB2, key parameters, in particular the upper and lower critical fields Hc2 and Hc1 and their anisotropies, are...
Mixed state properties of superconducting MgB2 single crystals (2002)
Zehetmayer, M., Eisterer, M., Weber, H. W., Jun, J., Kazakov, S. M., Karpinski, J., ...
We report on measurements of the magnetic moment in superconducting MgB2 single crystals. We find \mu_0H_{c2}^c(0) = 3.2 T, \mu_0H_{c2}^{ab}(0) = 14.5 T, \gamma = 4.6, \mu_0H_c(0) = 0.28 T, and...
Thermal conductivity of single crystalline MgB_2 (2002)
Sologubenko, A. V., Jun, J., Kazakov, S. M., Karpinski, J., Ott, H. R.
The ab-plane thermal conductivity $\kappa$ of single-crystalline hexagonal MgB_2 has been measured as a function of magnetic field H with orientations both parallel and perpendicular to the c-axis...
Photoluminescence from Pressure - Annealed Nanostructured Silicon Dioxide and Nitride Films (2002)
Misiuk, A., Rebohle, L., Iller, A., Tyschenko, I. E., Jun, J.
Light emission in thin films (SiO2, SiO2:Si and Si3N4) on a single crystalline silicon surface has been investigated after treatment at enhanced argon pressure, HP. Pronounced effect of HP up to 1.5...
Temperature dependence and anisotropy of the bulk upper critical field H_c2 of MgB_2 (2001)
Sologubenko, A. V., Jun, J., Kazakov, S. M., Karpinski, J., Ott, H. R.
The bulk upper critical field H_{c2}(T) of superconducting MgB_2 and its anisotropy are established by analyzing experimental data on the temperature and magnetic field dependences of the ab-plane...
Temperature and field dependence of the anisotropy of MgB2 (2001)
Angst, M., Puzniak, R., Wisniewski, A., Jun, J., Kazakov, S. M., Karpinski, J., ...
The anisotropy gamma of the superconducting state of high quality single-crystals of MgB2 was determined, using torque magnetometry with two different methods. The anisotropy of the upper critical...
Thermal and electrical transport in single crystalline MgB_2 (2001)
Sologubenko, A. V., Jun, J., Kazakov, S. M., Karpinski, J., Ott, H. R.
We present the results of measurements of the thermal and electrical conductivity in the basal plane of single-crystalline MgB_2 between 2 and 300 K. The analysis of the temperature dependence of the...
V. Sursaeva, S. Protasova, W. Lojkowski, J. Jun
We investigated the effect of high hydrostatic pressure on the normal grain growth in 2-D aluminium foils. The time dependence of the mean grain area was obtained. It was shown that normal grain...
Associative Array Processing for Topographic Data Reduction. (1998)
Radosevic,R. G., Bruno,C., Adams,N. J., Jun,J.
The objective of this study was to estimate the adaptability of a STARAN associative array processor (AAP) manufactured by Goodyear Aerospace Corporation (GAC) to the data processing problems of the...
Visual Semantics Emergence To Support Creative Designing: A Computational View (1995)
John S. Gero, Han J. Jun, J. Jun
. One computational model of creative design involves the introduction of new variables or schemas into the designing process. This paper describes and elaborates an approach where an emergence...
Taxes and the Form of Ownership of Foreign Corporate Equity.
enterprises ; market ; securities ; investments ; capital
Taxes and the Form of Ownership of Foreign Corporate Equity.
enterprises ; market ; securities ; investments ; capital
Taxes and the Form of Ownership of Foreign Corporate Equity.
investments ; financial market ; fiscal policy ; econometrics