Field-Induced Carrier Delocalization in the Strain-Induced Mott Insulating State of an Organic Superconductor
Yoshitaka Kawasugi, Hiroshi M. Yamamoto, Naoya Tajima, Takeo Fukunaga, Kazuhito Tsukagoshi, Reizo Kato
DOI 10.1103/PhysRevLett.103.116801 · Physical Review Letters
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
We report the influence of the field effect on the dc resistance and Hall coefficient in the strain-induced Mott insulating state of an organic superconductor κ−(BEDT−TTF)2Cu[N(CN)2]Br. Conductivity obeys the formula for an activated transport σ□=σ0exp(−W/kBT), where σ0 is a constant and W depends on the gate voltage. The gate-voltage dependence of the Hall coefficient shows that, unlike in conventional field-effect transistors, the effective mobility of dense hole carriers (∼1.6×1014 cm−2) is enhanced by a positive gate voltage. This implies that carrier doping involves delocalization of intrinsic carriers that were initially localized due to electron correlation.
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. | — | Pressure not reported | unknown |
Similar papers
Anisotropic magnetoresistance in the organic superconductor β″−(BEDT−TTF)2SF5CH2CF2SO3
similarity 0.90X. Su et al.
Source status unknown — claims are unverified
Enhancement of Pairing Interaction and Magnetic Fluctuations toward a Band Insulator in an Electron-Doped LixZrNCl Superconductor
similarity 0.90Yuichi Kasahara et al.
Source status unknown — claims are unverified
Temporal processes in a polymeric anion-based organic superconductor
similarity 0.89T. F. Stalcup et al.
Source status unknown — claims are unverified
In-plane Hall-effect anisotropy in the organic superconductor κ−(BEDT−TTF)2Cu[N(CN)2]Br
similarity 0.89M. A. Tanatar et al.
Source status unknown — claims are unverified
Ab initio electronic structure of the eclipsed and staggered conformations of the κ−(BEDT-TTF)2Cu[N(CN)2]Br organic superconductor
similarity 0.89Andrea Aburto & Emilio Orgaz
Source status unknown — claims are unverified
Effects of inhomogeneity on the interlayer magnetoresistance in the organic superconductor κ−(BEDT−TTF)2Cu[N(CN)2]Br
similarity 0.89F. Zuo et al.
Source status unknown — claims are unverified