BaVS3 probed by V L edge x-ray absorption spectroscopy

被引：6

作者：

Ilakovac, V. ^{[1
,2
]}

Brookes, N. B. ^{[3
]}

Cezar, J. Criginski ^{[3
]}

Thakur, P. ^{[3
]}

Bisogni, V. ^{[3
]}

Dallera, C. ^{[4
]}

Ghiringhelli, G. ^{[4
]}

Braicovich, L. ^{[4
]}

Bernu, S. ^{[5
]}

Berger, H. ^{[6
]}

Forro, L. ^{[6
]}

Akrap, A. ^{[6
]}

Hague, C. F. ^{[1
]}

机构：

[1] Univ Paris 06, CNRS UMR 7614, LCP MR, F-75231 Paris, France

[2] Univ Cergy Pontoise, F-95031 Cergy Pontoise, France

[3] ESRF, F-38043 Grenoble, France

[4] Politecn Milan, I-20133 Milan, Italy

[5] Univ Paris 11, Phys Solides Lab, CNRS UMR 8502, F-91405 Orsay, France

[6] Ecole Polytech Fed Lausanne, CH-1015 Lausanne, Switzerland

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 2012年 / 24卷 / 04期

基金：

瑞士国家科学基金会;

关键词：

ELECTRONIC-STRUCTURE; SPIN; PHASE; TRANSITION; SCATTERING; CRYSTAL; STATE;

D O I：

10.1088/0953-8984/24/4/045503

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Polarization dependent vanadium L edge x-ray absorption spectra of BaVS3 single crystals are measured in the four phases of the compound. The difference between signals with the polarizations E perpendicular to c and E parallel to c ( linear dichroism) changes with temperature. Besides increasing the intensity of one of the maxima, a new structure appears in the pre-edge region below the metal-insulator transition. More careful examination brings to light that the changes start already with pretransitional charge density wave fluctuations. Simple symmetry analysis suggests that the effect is related to rearrangements in the E-g and A(1g) states, and is compatible with the formation of four inequivalent V-sites along the V-S chain.

引用

页数：6

共 23 条

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