Pressure-Induced Superconducting Transition of λ-(BETS)2FeCl4 with π−d Coupled Antiferromagnetic Insulating Ground State at Ambient Pressure [BETS = Bis(ethylenedithio)tetraselenafulvalene]
Pressure-Induced Superconducting Transition of λ-(BETS)2FeCl4 with π−d Coupled Antiferromagnetic Insulating Ground State at Ambient Pressure [BETS = Bis(ethylenedithio)tetraselenafulvalene]
复制标题
环境压力下具有 π−d 耦合反铁磁绝缘基态的 λ-(BETS)2FeCl4 的压力诱导超导转变 [BETS = 双(乙撑二硫)四硒富瓦烯]
DOI：
10.1021/ja992930s
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发表时间：
1999
影响因子：
15
通讯作者：
P. Cassoux
中科院分区：
文献类型：
--
作者：
Hisashi Tanaka;T. Adachi;E. Ojima;H. Fujiwara;K. Kato;H. Kobayashi;A. Kobayashi;P. Cassoux
本文报道了在这个独特的{pi}-d电子系统{γ}-(Bets){sub2}FeCl{sub4}中发现的超导电性。根据报道的条件，用电化学氧化法合成了{lambda}-(Bets){sub2}FeCl{sub4}的针状晶体。{Gamma}型贝茨晶体具有三斜晶格。晶体的针轴几乎平行于c轴，c轴对应于反铁磁自旋结构的易磁轴。由赌注分子组成的导电层平行于交流平面。用块状高压室测量了从室温到约0.55K的电阻率，并测量了在几乎平行和垂直于导电层的磁场作用下的电阻率。
In the present paper, the discovery of the superconductivity in this unique {pi}-d electron system {gamma}-(BETS){sub 2}FeCl{sub 4} is reported. Thin needle crystals of {lambda}-(BETS){sub 2}FeCl{sub 4} were prepared by the electrochemical oxidation according to the reported conditions. The {gamma}-type BETS crystal has a triclinic lattice. The needle axis of the crystal is almost parallel to the c axis, which corresponds to the magnetic easy axis of the antiferromagnetic spin structure. The conduction layer composed of BETS molecules is parallel to the ac plane. The electrical resistivities were measured using the clump-type high-pressure cell from room temperature to about 0.55 K. The electrical resistivities were also measured under the magnetic field applied almost parallel and perpendicular to the conduction layer.