期刊论文详细信息
Magnetic-field-induced superconductivity in layered organic molecular crystals with localized magnetic moments | |
Article | |
关键词: BETS = BIS(ETHYLENEDITHIO)TETRASELENAFULVALENE; FERMI-SURFACE; LAMBDA-(BETS)(2)FECL4; KAPPA-(BETS)(2)FEBR4; TRANSITION; SPINS; CONDUCTORS; INSULATOR; | |
DOI : 10.1103/PhysRevB.65.100502 | |
来源: SCIE |
【 摘 要 】
lambda-( BETS)(2)FeCl4 undergoes transitions from an antiferromagnetic insulator to a metal and then to a superconductor as a magnetic field is increased. We use a Hubbard-Kondo model to clarify the role of the Fe3+ magnetic ions in these phase transitions. In the high-field regime, the magnetic field acting on the electron spins is compensated by the exchange field H-e due to the magnetic ions. We show how H-e can be extracted from the observed splitting of the Shubnikov-de Haas frequencies. We predict the field range for field-induced superconductivity in other materials.
【 授权许可】
Free