Spin pseudogap in the S=1/2 chain material Sr2CuO3 with impurities

被引：9

作者：

Simutis, G. ^{[1
]}

Gvasaliya, S. ^{[1
]}

Beesetty, N. S. ^{[2
]}

Yoshida, T. ^{[3
]}

Robert, J. ^{[4
]}

Petit, S. ^{[4
]}

Kolesnikov, A. I. ^{[5
]}

Stone, M. B. ^{[6
]}

Bourdarot, F. ^{[7
,8
]}

Walker, H. C. ^{[9
]}

Adroja, D. T. ^{[9
]}

Sobolev, O. ^{[10
]}

Hess, C. ^{[11
]}

Masuda, T.

Revcolevschi, A. ^{[2
]}

Buechner, B. ^{[11
]}

Zheludev, A. ^{[1
]}

机构：

[1] ETH, Solid State Phys Lab, Neutron Scattering & Magnetism, Zurich, Switzerland

[2] Univ Paris 11, Synth Proprietes & Modelisat Mat, F-91405 Orsay, France

[3] Univ Tokyo, Inst Solid State Phys, 5-1-5 Kashiwanoha, Kashiwa, Chiba 2778581, Japan

[4] CEA Saclay, CEACNRS, Lab Leon Brillouin, F-91191 Gif Sur Yvette, France

[5] Oak Ridge Natl Lab, Chem & Engn Mat Div, Oak Ridge, TN 37831 USA

[6] Oak Ridge Natl Lab, Quantum Condensed Matter Div, Oak Ridge, TN 37831 USA

[7] Univ Grenoble Alpes, Modelisat & Dexplorat Mat, 17 Rue Martyrs, F-38054 Grenoble, France

[8] CEA, INAC, 17 Rue Martyrs, F-38054 Grenoble, France

[9] Rutherford Appleton Lab, ISIS Facil, Didcot OX11 OQX, Oxon, England

[10] Tech Univ Munich, Forsch Neutronenquelle Heinz Maier Leibnitz FRM 2, D-85747 Garching, Germany

[11] Leibniz Inst Solid State & Mat Res IFW Dresden, POB 270116, D-01171 Dresden, Germany

来源：

PHYSICAL REVIEW B | 2017年 / 95卷 / 05期

基金：

瑞士国家科学基金会;

关键词：

HEISENBERG ANTIFERROMAGNETIC CHAIN; MAGNETIC-SUSCEPTIBILITY; TEMPERATURE; LOCALIZATION; TRANSPORT; SRCUO2;

D O I：

10.1103/PhysRevB.95.054409

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The low-energy magnetic excitation spectrum of the Heisenberg antiferromagnetic S = 1/2 chain system Sr2CuO3 with Ni and Ca impurities is studied by neutron spectroscopy. In all cases, a defect-induced spectral pseudogap is observed and shown to scale proportionately to the number of scattering centers in the spin chains.

引用

页数：6

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