High Pressure Transport and Structural Studies on Nb3Ga Superconductor

Authors

Vahe Mkrtcheyan, University of Nevada, Las VegasFollow
Ravhi Kumar, University of Nevada, Las VegasFollow
Jason Baker, University of Nevada, Las VegasFollow
Anthony Connolly, University of Nevada, Las Vegas
Daniel Antonio, University of Nevada, Las VegasFollow
Andrew Cornelius, University of Nevada, Las VegasFollow
Yusheng Zhao, University of Nevada, Las VegasFollow

Document Type

Article

Publication Date

2-15-2015

Publication Title

Physica B: Condensed Matter

Volume

459

Issue

1

First page number:

21

Last page number:

23

Abstract

The crystal structure of A-15 superconductor Nb3Ga with a critical temperature Tc=16.5 K has been investigated by high pressure x-ray diffraction (HPXRD) using synchrotron x-rays and a diamond anvil cell under Ne pressure medium. 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. Our results show a positive pressure effect on Tc.

Keywords

Superconductivity; High pressure; Crystal structure

Repository Citation

Mkrtcheyan, V., Kumar, R., Baker, J., Connolly, A., Antonio, D., Cornelius, A., Zhao, Y. (2015). High Pressure Transport and Structural Studies on Nb3Ga Superconductor. Physica B: Condensed Matter, 459(1), 21-23.
http://dx.doi.org/10.1016/j.physb.2014.11.089