PRESSURE EFFECTS ON THE LOW-TEMPERATURE STATE OF THE ALPHA-(BEDT-TTF)(2)MHG(SCN)(4) ORGANIC CONDUCTOR FAMILY

Authors
CHEN X BROOKS JS KLEPPER SJ VALFELLS S ATHAS GJ TOKUMOTO M KINOSHITA N TANAKA Y ANZAI H
Citation
X. Chen et al., PRESSURE EFFECTS ON THE LOW-TEMPERATURE STATE OF THE ALPHA-(BEDT-TTF)(2)MHG(SCN)(4) ORGANIC CONDUCTOR FAMILY, Synthetic metals, 70(1-3), 1995, pp. 837-838
Citations number
10
Categorie Soggetti
Physics, Condensed Matter","Metallurgy & Metallurigical Engineering
Journal title
Synthetic metals → ACNP
ISSN journal
03796779
Volume
70
Issue
1-3
Year of publication
1995
Pages
837 - 838
Database
ISI
SICI code
0379-6779(1995)70:1-3<837:PEOTLS>2.0.ZU;2-U
Abstract
Systematic magnetotransport measurements as a function of hydrostatic pressure have been made on four members of the alpha-(BEDT-TTF)(2)MHG( SCN)(4) organic conductor family (M = K, Tl, Rb, NH4). Applied pressur e above about 6 Kbar removes the density wave state for M = K, Tl, and Rb. For M = NH4 the superconducting state is removed with pressure as dT(c)/dP = - 0.25 K/Kbar. In all cases the Shubnikov de Haas oscillat ion frequency increases with pressure, including the beta orbit (which involves the entire Brillouin zone), and new orbits involving very sm all fractions of the Fermi surface are formed.