Chemical and hydrostatic-pressure effects on the Kitaev honeycomb material Na2IrO3

被引：24

作者：

Simutis, G. ^{[1
]}

Barbero, N. ^{[2
]}

Rolfs, K. ^{[3
]}

Leroy-Calatayud, P. ^{[2
]}

Mehlawat, K. ^{[4
]}

Khasanov, R. ^{[1
]}

Luetkens, H. ^{[1
]}

Pomjakushina, E. ^{[5
]}

Singh, Y. ^{[4
]}

Ott, H-R ^{[2
,6
]}

Mesot, J. ^{[2
,6
]}

Amato, A. ^{[1
]}

Shiroka, T. ^{[2
,6
]}

机构：

[1] Paul Scherrer Inst, Lab Muon Spin Spect, CH-5232 Villigen, Switzerland

[2] Swiss Fed Inst Technol, Lab Festkorperphys, CH-8093 Zurich, Switzerland

[3] Paul Scherrer Inst, Lab Dev & Methods, CH-5232 Villigen, Switzerland

[4] Indian Inst Sci Educ & Res, Sect 81, Mohali 140306, India

[5] Paul Scherrer Inst, Lab Multiscale Mat Expt, CH-5232 Villigen, Switzerland

[6] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

来源：

PHYSICAL REVIEW B | 2018年 / 98卷 / 10期

基金：

瑞士国家科学基金会;

关键词：

D O I：

10.1103/PhysRevB.98.104421

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The low-temperature magnetic properties of polycrystalline Na2IrO3, a candidate material for the realization of a quantum spin-liquid state, were investigated by means of muon-spin relaxation and nuclear magnetic resonance methods under chemical and hydrostatic pressure. The Li-for-Na chemical substitution promotes an inhomogeneous magnetic order, whereas hydrostatic pressure (up to 3.9 GPa) results in an enhancement of the ordering temperature T-N. In the first case, the inhomogeneous magnetic order suggests either short- or long-range correlations of broadly distributed j =1/2 Ir4+ magnetic moments, reflecting local disorder. The increase of T-N under applied pressure points at an increased strength of three-dimensional interactions arising from interlayer compression.

引用

页数：11

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