Magnetoresistance study of the effect of disorder on the organic superconductor bis-tetramethyltetraselenafulvalenium perchlorate

Journal Article · Thu Dec 01 00:00:00 EST 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.38.11177· OSTI ID:6615712

Korin-Hamzic, B; Forro, L; Cooper, J R; Bechgaard, K

We report a study of the magnetoresistance of the organic superconductor bis-tetramethyltetraselenafulvalenium perchlorate ((TMTSF)/sub 2/ClO/sub 4/) with disorder introduced by irradiation (c = 0.06 and 0.12 % defects per mole) and by alloying, i.e., (TMTSF)/sub 2/(ClO/sub 4/) /sub 1-//sub x/(ReO/sub 4/)/sub x/ (0.03less than or equal toxless than or equal to0.07). The magnetoresistance was measured for current flow along c/sup */, perpendicular to the highly conducting a axis with Hparallelb'; for fields up to 6 T from 4.2 to 30 K. Kohler's rule is obeyed for the alloys and the results can be understood in terms of standard theory for an open Fermi surface. The strong perturbations caused by irradiation-induced defects lead to deviations from Kohler's rule which are attributed to a change in the effective tight-binding overlap integral along c/sup */. Above approximately 8 K all crystals have a T/sup 2/ term in the resistivity. For the alloys this term is independent of the defect concentration, i.e., the residual resistivity, and it may arise from electron-electron scattering.

• Research Organization: Institute of Physics of the University of Zagreb, P.O. Box 304, YU-41001 Zagreb, Yugoslavia
• OSTI ID: 6615712
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Vol. 38:16
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
PERCHLORATES
MAGNETORESISTANCE
TMTSF
CRYSTAL DEFECTS
MAGNETIC FIELDS
SUPERCONDUCTIVITY
SUPERCONDUCTORS
ULTRALOW TEMPERATURE
VERY LOW TEMPERATURE
CHLORINE COMPOUNDS
CRYSTAL STRUCTURE
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
HALOGEN COMPOUNDS
HETEROCYCLIC COMPOUNDS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PHYSICAL PROPERTIES
SELENIUM COMPOUNDS
360603* - Materials- Properties
656100 - Condensed Matter Physics- Superconductivity