From Mott insulator to ferromagnetic metal:: A pressure study of Ca2RuO4 -: art. no. 220402
From Mott insulator to ferromagnetic metal:: A pressure study of Ca2RuO4 -: art. no. 220402
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DOI：
10.1103/physrevb.65.220402
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发表时间：
2002-06-01
影响因子：
3.7
通讯作者：
Julian, SR
中科院分区：
文献类型：
--
作者：
Nakamura, F;Goko, T;Julian, SR
结果表明，Mott绝缘体Ca 2 RuO 4的压温相图在0.5GPa下表现出金属-绝缘体相变：在300 K下从顺磁性绝缘体转变为顺磁性准二维金属，在T小于或等于12 K下从反铁磁性绝缘体转变为铁磁性、高度各向异性的三维金属.我们比较的金属状态的结构相关的p-波超导体Sr 2 RuO 4，并讨论了结构扭曲的重要性，预计强烈耦合到压力。
We show that the pressure-temperature phase diagram of the Mott insulator Ca2RuO4 features a metal-insulator transition at 0.5 GPa: at 300 K from paramagnetic insulator to paramagnetic quasi-two-dimensional metal, and at Tless than or equal to12 K from antiferromagnetic insulator to ferromagnetic, highly anisotropic, three-dimensional metal. We compare the metallic state to that of the structurally related p-wave superconductor Sr2RuO4, and discuss the importance of structural distortions, which are expected to couple strongly to pressure.