Robustness of Basal-Plane Antiferromagnetic Order and the Jeff=1/2 State in Single-Layer Iridate Spin-Orbit Mott Insulators

被引：113

作者：

Boseggia, S. ^{[1
,3
]}

Springell, R. ^{[4
]}

Walker, H. C. ^{[5
]}

Ronnow, H. M. ^{[6
]}

Rueegg, Ch. ^{[7
,8
]}

Okabe, H. ^{[9
]}

Isobe, M. ^{[9
]}

Perry, R. S. ^{[10
]}

Collins, S. P. ^{[3
]}

McMorrow, D. F. ^{[1
,2
]}

机构：

[1] UCL, London Ctr Nanotechnol, London WC1E 6BT, England

[2] UCL, Dept Phys & Astron, London WC1E 6BT, England

[3] Diamond Light Source Ltd, Didcot OX11 0DE, Oxon, England

[4] Univ Bristol, Interface Anal Ctr, Royal Commiss Exhibit Res Fellow 1851, Bristol BS2 8BS, Avon, England

[5] Deutsch Elektronen Synchrotron DESY, D-22607 Hamburg, Germany

[6] Ecole Polytech Fed Lausanne, ICMP, Lab Quantum Magnetism, CH-1015 Lausanne, Switzerland

[7] Paul Scherrer Inst, Neutron Scattering Lab, CH-5232 Villigen, Switzerland

[8] Univ Geneva, DPMC MaNEP, CH-1211 Geneva, Switzerland

[9] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan

[10] Univ Edinburgh, Sch Phys, Scottish Univ Phys Alliance, Edinburgh EH9 3JZ, Midlothian, Scotland

来源：

PHYSICAL REVIEW LETTERS | 2013年 / 110卷 / 11期

基金：

英国工程与自然科学研究理事会;

关键词：

HIGH-TEMPERATURE SUPERCONDUCTIVITY; SR2IRO4; PHYSICS;

D O I：

10.1103/PhysRevLett.110.117207

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The magnetic structure and electronic ground state of the layered perovskite Ba2IrO4 have been investigated using x-ray resonant magnetic scattering. Our results are compared with those for Sr2IrO4, for which we provide supplementary data on its magnetic structure. We find that the dominant, long-range antiferromagnetic order is remarkably similar in the two compounds and that the electronic ground state in Ba2IrO4, deduced from an investigation of the x-ray resonant magnetic scattering L-3/L-2 intensity ratio, is consistent with a J(eff) = 1/2 description. The robustness of these two key electronic properties to the considerable structural differences between the Ba and Sr analogues is discussed in terms of the enhanced role of the spin-orbit interaction in 5d transition metal oxides. DOI: 10.1103/PhysRevLett.110.117207

引用

页数：5

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