Anomalous magnetization in single-crystal κ-[bis(ethylenedithiotetrathiafulvalene)]2Cu[N(CN)2]Br superconductors
F. Zuo, S. Khizroev, G. C. Alexandrakis, J. A. Schlueter, U. Geiser, J. M. Williams
DOI 10.1103/PhysRevB.52.R13126 · 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
We report detailed magnetization studies on single-crystal superconductors of κ-[bis(ethylenedithiotetra- thiafulvalene)]2Cu[N(CN)2]Br with the field H parallel to the b axis (perpendicular to the conducting plane). At high temperatures, the magnetization, M, displays a power-law dependence on H with M∝Hn and n=-2/3. The critical current extrapolated from the width of the hysteresis loop depends on H exponentially. At low temperatures (T<7 K), an anomalous field dependence with a change of sign in the curvature of M(H) is observed. The anomalous field dependence is qualitatively similar to the fishtail magnetization reported for the oxide superconductors. Possible mechanisms giving rise to this effect are discussed.
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 | Pressure unresolved | unknown |
| Tl2Ba2CuO6 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| Bi2Sr2CaCu2O8+y Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| κ-(BEDT-TTF)2Cu[NCS]2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Competition between magnetism and superconductivity in the organic metal κ−[BEDT−TTF]2Cu[N(CN)2]Br
similarity 0.96David Fournier et al.
Source status unknown — claims are unverified
Anomalous magnetization and dimensional crossover of the vortex system in the organic superconductor κ-(BEDT−TTF)2Cu(NCS)2
similarity 0.96Terukazu Nishizaki et al.
Source status unknown — claims are unverified
Deuterated κ-(BEDT-TTF)2Cu[N(CN)2]Br: A system on the borderof the superconductor–magnetic-insulator transition
similarity 0.96A. Kawamoto et al.
Source status unknown — claims are unverified
Superconductor-insulator phase transformation of partially deuterated κ−(BEDT−TTF)2Cu[N(CN)2]Br by control of the cooling rate
similarity 0.96H. Taniguchi 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
Phenomenological and spectroscopic evidence for defect-induced high-temperature superconductivity
similarity 0.95J. C. Phillips
Source status unknown — claims are unverified