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Bimal K. Sarma
Researcher at University of Wisconsin–Milwaukee
Publications - 103
Citations - 819
Bimal K. Sarma is an academic researcher from University of Wisconsin–Milwaukee. The author has contributed to research in topics: Superconductivity & Attenuation. The author has an hindex of 15, co-authored 94 publications receiving 792 citations. Previous affiliations of Bimal K. Sarma include Langley Research Center.
Papers
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Journal ArticleDOI
Phase diagram of UPt3 from ultrasonic velocity measurements
Shireen Adenwalla,S. W. Lin,Q. Z. Ran,Z. Zhao,John B Ketterson,James A Sauls,L. Taillefer,D. G. Hinks,M. Levy,Bimal K. Sarma +9 more
TL;DR: In this article, the authors present measurements of longitudinal ultrasonic velocity on single crystals of the heavy-fermion superconductor, and construct a phase diagram for the superconducting state, revealing all the boundary lines that have been identified as possible phase transitions.
Journal ArticleDOI
Longitudinal sound measurements on UPt3 in a magnetic field
Y. J. Qian,Y. J. Qian,M. F. Xu,A. Schenstrom,H. P. Baum,John B Ketterson,D. G. Hinks,Moises Levy,Bimal K. Sarma +8 more
TL;DR: In this article, a new feature (a peak) was found in the magnetic field dependence of the longitudinal ultrasound attenuation in UPt 3, where the attenuation varies linearly with field.
Journal ArticleDOI
Ultrasonic-attenuation measurements in single-phased YBa2
M. F. Xu,H. P. Baum,A. Schenstrom,Bimal K. Sarma,Moises Levy,K. J. Sun,L. E. Toth,Stuart A. Wolf,Donald U. Gubser +8 more
TL;DR: The attenuation data show similarities to the behavior of heavy-fermion superconductors, with a local maximum just below T/sub c/ and a nearly quadratic dependence of the attenuation at lower temperatures.
Journal ArticleDOI
Ultrasonic velocity anomalies in superconducting sinter-forged YBa2Cu3O7-
Z. Zhao,Shireen Adenwalla,André Moreau,John B Ketterson,Q. Robinson,D. L. Johnson,Shiou-Jyh Hwu,Kenneth R. Poeppelmeier,M. F. Xu,Y. Hong,R. F. Wiegert,Moises Levy,Bimal K. Sarma +12 more
TL;DR: Sound-velocity measurements show that the sinter-forged polycrystalline material is elastically anisotropic and the temperature dependence of the sound velocity shows distinct anomalies.
Journal ArticleDOI
Frequency-dependent ultrasonic attenuation of YBa2Cu3O7.
TL;DR: Experimental measurements of temperature-dependent ultrasonic attenuation at three frequencies exhibit maxima, and velocity measurements display softening of the lattice, which may evidence a structural instability in YBa/sub 2/Cu/sub 3/O/sub 7/ at these temperatures.