Van Hove singularity as a possible origin of the bandwidth renormalization in layered superconductors

被引：7

作者：

Borisenko, S. V. ^{[1
]}

Kordyuk, A. A. ^{[1
,2
]}

Zabolotnyy, V. B. ^{[1
]}

Evtushinsky, D. V. ^{[1
]}

Kim, T. K. ^{[1
]}

Buechner, B. ^{[1
]}

Yaresko, A. N. ^{[3
]}

Borisenko, V. D. ^{[4
]}

Berger, H. ^{[5
]}

机构：

[1] IFW Dresden, Leibniz Inst Solid State Res, D-01171 Dresden, Germany

[2] Natl Acad Sci Ukraine, Inst Met Phys, UA-03142 Kiev, Ukraine

[3] Max Planck Inst Solid State Res, D-70569 Stuttgart, Germany

[4] Vinnytsia State Tech Univ, UA-21021 Vinnytsia, Ukraine

[5] Ecole Polytech Fed Lausanne, Inst Phys Complex Matter, CH-1015 Lausanne, Switzerland

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2011年 / 72卷 / 05期

关键词：

D O I：

10.1016/j.jpcs.2010.10.063

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We use angle-resolved photoemission spectroscopy to study bandwidth renormalization in layered superconductor 2H-NbSe(2). Renormalization of the conduction band in comparison with the very similar 2H-TaSe(2) is of the factor of two. We discuss the possibility that the Van Hove singularity could be responsible for this effect not only in dichalcogenides but also in pnictides. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：562 / 564

页数：3

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