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Title: High pressure transport and structural studies on Nb3Ga superconductor

We investigated the crystal structure of A-15 superconductor Nb3Ga with a critical temperature Tc = 16.5 K by high pressure x-ray diffraction (HPXRD) using synchrotron x-rays and a diamond anvil cell under Ne pressure medium. Furthermore, the high pressure structural results indicate that Nb3Ga is stable up to 41 GPa. The P-V plot shows an anomaly around 15 GPa even though there are no pressure induced structural transitions are observed. High pressure resistance measurements were performed up to 0.5 GPa to understand the variation of Tc under pressure. Finally, our results show a positive pressure effect on Tc.
Authors:
 [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1] ;  [1]
  1. Univ. of Nevada, Las Vegas, NV (United States). High Pressure Science and Engineering Center and Dept. of Physics and Astronomy
Publication Date:
OSTI Identifier:
1332341
Grant/Contract Number:
NA0001982; NA0001974; FG02-99ER45775; AC02-06CH11357
Type:
Accepted Manuscript
Journal Name:
Physica. B, Condensed Matter
Additional Journal Information:
Journal Volume: 459; Journal Issue: C; Journal ID: ISSN 0921-4526
Publisher:
Elsevier
Research Org:
Univ. of Nevada, Las Vegas, NV (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 36 MATERIALS SCIENCE superconductivity; high pressure; crystal structure