Ultrahigh-resolution laser photoemission study of URu2Si2 across the hidden-order transition

被引：3

作者：

Yoshida, Rikiya ^{[1
]}

Nakamura, Yoshiaki ^{[1
]}

Fukui, Masaki ^{[1
]}

Haga, Yoshinori ^{[2
]}

Yamamoto, Etsuji ^{[2
]}

Onuki, Yoshichika ^{[2
,3
]}

Okawa, Mario ^{[4
]}

Shin, Shik ^{[4
]}

Hirai, Masaaki ^{[1
]}

Muraoka, Yuji ^{[1
]}

Yokoya, Takayoshi ^{[1
]}

机构：

[1] Okayama Univ, Grad Sch Nat Sci & Technol, Okayama 7008530, Japan

[2] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

[3] Osaka Univ, Grad Sch Sci, Osaka 5600043, Japan

[4] Univ Tokyo, Inst Solid State Phys, Chiba 2778581, Japan

来源：

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

关键词：

Photoelectron spectroscopy; Phase transitions; Electronic structure; FERMI-SURFACE; SYSTEM;

D O I：

10.1016/j.jpcs.2010.10.048

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have studied the electronic structures of URu2Si2 employing ultrahigh-resolution laser angle-resolved photoemission spectroscopy. The change of photoemission spectra is investigated across the hidden-order transition, and the emergence of a narrow band is clearly observed near the Fermi level for both (pi,0) and (pi,pi) directions. In addition, it is shown that tuning of light's polarization allows the signal of a hole-like dispersive feature to enhance. These observations prove that laser angle-resolved photoemission spectroscopy is an effective tool for studying the evolution of electronic structures across the hidden-order transition in URu2Si2. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：580 / 581

页数：2

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