Signature of antiferromagnetic long-range order in the optical spectrum of strongly correlated electron systems

被引：44

作者：

Taranto, C. ^{[1
]}

Sangiovanni, G. ^{[1
]}

Held, K. ^{[1
]}

Capone, M. ^{[2
,3
]}

Georges, A. ^{[4
,5
,6
]}

Toschi, A. ^{[1
]}

机构：

[1] Vienna Univ Technol, Inst Solid State Phys, A-1040 Vienna, Austria

[2] SISSA, I-34136 Trieste, Italy

[3] CNR, IOM, Democritos Natl Simulat Ctr, I-34136 Trieste, Italy

[4] Ecole Polytech, CNRS, Ctr Phys Theor, F-91128 Palaiseau, France

[5] Coll France, F-75005 Paris, France

[6] Univ Geneva, DPMC, CH-1211 Geneva, Switzerland

来源：

PHYSICAL REVIEW B | 2012年 / 85卷 / 08期

基金：

欧洲研究理事会; 奥地利科学基金会;

关键词：

SINGLE-PARTICLE EXCITATIONS; T-J MODEL; HUBBARD-MODEL; HOLE DYNAMICS; QUANTUM; SUPERCONDUCTIVITY; TEMPERATURE;

D O I：

10.1103/PhysRevB.85.085124

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We show how the onset of a non-Slater antiferromagnetic ordering in a correlated material can be detected by optical spectroscopy. Using dynamical mean-field theory we identify two distinctive features: The antiferromagnetic ordering is associated with an enhanced spectral weight above the optical gap, and well-separated spin-polaron peaks emerge in the optical spectrum. Both features are indeed observed in LaSrMnO4 [A. Gossling et al., Phys. Rev. B 77, 035109 (2008)].

引用

页数：10

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