From Mott insulator to ferromagnetic metal:: A pressure study of Ca2RuO4 -: art. no. 220402

被引：122

作者：

Nakamura, F ^{[1
]}

Goko, T

Ito, M

Fujita, T

Nakatsuji, S

Fukazawa, H

Maeno, Y

Alireza, P

Forsythe, D

Julian, SR

机构：

[1] Hiroshima Univ, ADSM, Dept Quantum Matter, Higashihiroshima 7398530, Japan

[2] Kyoto Univ, Dept Phys, Kyoto 6068502, Japan

[3] Kyoto Univ, Int Innovat Ctr, Kyoto 6068502, Japan

[4] Japan Sci & Technol Corp, CREST, Tokyo, Japan

[5] Univ Cambridge, Cavendish Lab, Cambridge CB3 OHE, England

来源：

PHYSICAL REVIEW B | 2002年 / 65卷 / 22期

关键词：

D O I：

10.1103/PhysRevB.65.220402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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.

引用

页码：2204021 / 2204024

页数：4

共 21 条

[1] Crystal and magnetic structure of Ca2RuO4:: Magnetoelastic coupling and the metal-insulator transition [J].