In-plane Hall-effect anisotropy in the organic superconductor κ−(BEDT−TTF)2Cu[N(CN)2]Br
M. A. Tanatar, V. N. Laukhin, T. Ishiguro, H. Ito, T. Kondo, G. Saito
DOI 10.1103/PhysRevB.60.7536 · Physical Review B
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
Anisotropy of the Hall effect within the highly conducting plane has been measured in the organic superconductor κ−(BEDT−TTF)2Cu[N(CN)2]Br. Anisotropy and magnetic field dependence nonlinearity in the Hall resistivity are found above approximately 30 K. This behavior is shown to originate from an electron sheet of the Fermi surface. The temperature at which anisotropy and nonlinearity appear correlates with the temperature at which resistivity is at its maximum. The Hall effect behavior at temperatures below about 30 K corresponds to the predictions of the semiclassical weak-field model for a two-dimensional metal. A comparison of the Hall constant predicted by the calculated band structure within this model with the experimentally determined value revealed a large discrepancy. This is discussed within the framework of a reconstruction of the Fermi surface, as recently proposed by Weiss et al. on the basis of Shubnikov–de Haas effect studies under pressure.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| κ-(BEDT-TTF)2Cu[N(CN)2]Br Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 11.6 | Pressure unresolved | onset |
| κ-(BEDT-TTF)2Cu(NCS)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 10.4 | Pressure unresolved | onset |
Similar papers
Effects of inhomogeneity on the interlayer magnetoresistance in the organic superconductor κ−(BEDT−TTF)2Cu[N(CN)2]Br
similarity 0.96F. Zuo et al.
Source status unknown — claims are unverified
Anisotropic thermopower of the organic superconductor κ-(BEDT-TTF)2Cu[N(CN)2]Br
similarity 0.96R. C. Yu et al.
Source status unknown — claims are unverified
Electron Localization near the Mott Transition in the Organic Superconductor κ−(BEDT−TTF)2Cu[N(CN)2]Br
similarity 0.96K. Sano et al.
Source status unknown — claims are unverified
Evidence for a vortex-lattice melting transition in an organic superconductor
similarity 0.95L. Fruchter et al.
Source status unknown — claims are unverified
Competition between magnetism and superconductivity in the organic metal κ−[BEDT−TTF]2Cu[N(CN)2]Br
similarity 0.95David Fournier et al.
Source status unknown — claims are unverified
Highly anisotropic superconductivity in the organic conductor α-(BEDT−TTF)2NH4Hg(SCN)4
similarity 0.95H. Taniguchi et al.
Source status unknown — claims are unverified