Journal
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS
Volume 72, Issue 5, Pages 580-581Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jpcs.2010.10.048
Keywords
Photoelectron spectroscopy; Phase transitions; Electronic structure
Funding
- Grants-in-Aid for Scientific Research [20102002, 20001004, 09J00227, 23840039, 20224015] Funding Source: KAKEN
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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.
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