Physics
Pressure-induced nesting in the low-dimensional organic superconductor α-(BEDT-TTF)2NH4Hg(SCN)4
Document Type
Article
Abstract
Why superconductivity appears in only one member (M=NH4) of the isostructural family of organic conductors α-(BEDT-TTF)2MHg(SCN)4 is a long-standing question. Others in the family (M =K,Rb,Tl) have density-wave ground states. To address this problem, we have studied pressure effects in superconducting α-(BEDT-TTF)2NH4Hg(SCN)4 (Tc=1.0 K). Our results show a remarkable pressure dependence of the Fermi surface topology. We argue that with NH4, there are small deviations from perfect nesting of the open-orbit bands which favor superconductivity over a density-wave state. © 1993 The American Physical Society.
Publication Title
Physical Review B
Publication Date
1993
Volume
48
Issue
13
First Page
9913
Last Page
9916
ISSN
0163-1829
DOI
10.1103/PhysRevB.48.9913
Keywords
superconductivity, organic conductors, Fermi surface
Repository Citation
Klepper, S. J.; Brooks, J. S.; Chen, X.; Bradaric, I.; Tokumoto, M.; Kinoshita, N.; Tanaka, Y.; and Agosta, C. C., "Pressure-induced nesting in the low-dimensional organic superconductor α-(BEDT-TTF)2NH4Hg(SCN)4" (1993). Physics. 54.
https://commons.clarku.edu/faculty_physics/54
