Ultrahigh-resolution laser photoemission study of URu2Si 2 across the hidden-order transition

Rikiya Yoshida; Yoshiaki Nakamura; Masaki Fukui; Yoshinori Haga; Etsuji Yamamoto; Yoshichika Nuki; Mario Okawa; Shik Shin; Masaaki Hirai; Yuji Muraoka; Takayoshi Yokoya

doi:10.1016/j.jpcs.2010.10.048

Ultrahigh-resolution laser photoemission study of URu₂Si ₂ across the hidden-order transition

Rikiya Yoshida^*, Yoshiaki Nakamura, Masaki Fukui, Yoshinori Haga, Etsuji Yamamoto, Yoshichika Nuki, Mario Okawa, Shik Shin, Masaaki Hirai, Yuji Muraoka, Takayoshi Yokoya

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Citations (Scopus)

Abstract

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 (π,0) and (π,π) 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.

Original language	English
Pages (from-to)	580-581
Number of pages	2
Journal	Journal of Physics and Chemistry of Solids
Volume	72
Issue number	5
DOIs	https://doi.org/10.1016/j.jpcs.2010.10.048
Publication status	Published - 2011 May
Externally published	Yes

Keywords

C. Photoelectron spectroscopy
D. Electronic structure
D. Phase transitions

ASJC Scopus subject areas

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

Access to Document

10.1016/j.jpcs.2010.10.048

Cite this

@article{f9a601cd279f4ff796e79551959f18ac,

title = "Ultrahigh-resolution laser photoemission study of URu2Si 2 across the hidden-order transition",

abstract = "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 (π,0) and (π,π) 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.",

keywords = "C. Photoelectron spectroscopy, D. Electronic structure, D. Phase transitions",

author = "Rikiya Yoshida and Yoshiaki Nakamura and Masaki Fukui and Yoshinori Haga and Etsuji Yamamoto and Yoshichika Nuki and Mario Okawa and Shik Shin and Masaaki Hirai and Yuji Muraoka and Takayoshi Yokoya",

note = "Funding Information: We are grateful to I. Kawasaki, H. Yamagami, H. Harima, K. Miyake, T. Shimojima, K. Okazaki, Y. Ishida, W. Malaeb, and K. Machida for valuable comments. This work is supported by a Grant-in-Aid for Scientific Research on Innovative Areas {\textquoteleft}Heavy Electrons{\textquoteright} ( Nos. 20102002 and 20102003 ) and Grant-in-Aid for Scientific Research (S) ( No. 20224015 ) of Ministry of Education, Culture, Sports, Science and Technology, Japan. Photoemission experiments were carried out under the Visiting Researcher's Program of the Institute for Solid State Physics, the University of Tokyo. R.Y. acknowledges the financial support from Research Fellowship of the Japan Society for the Promotion of Science.",

year = "2011",

month = may,

doi = "10.1016/j.jpcs.2010.10.048",

language = "English",

volume = "72",

pages = "580--581",

journal = "Journal of Physics and Chemistry of Solids",

issn = "0022-3697",

publisher = "Elsevier Limited",

number = "5",

}

TY - JOUR

T1 - Ultrahigh-resolution laser photoemission study of URu2Si 2 across the hidden-order transition

AU - Yoshida, Rikiya

AU - Nakamura, Yoshiaki

AU - Fukui, Masaki

AU - Haga, Yoshinori

AU - Yamamoto, Etsuji

AU - Nuki, Yoshichika

AU - Okawa, Mario

AU - Shin, Shik

AU - Hirai, Masaaki

AU - Muraoka, Yuji

AU - Yokoya, Takayoshi

N1 - Funding Information: We are grateful to I. Kawasaki, H. Yamagami, H. Harima, K. Miyake, T. Shimojima, K. Okazaki, Y. Ishida, W. Malaeb, and K. Machida for valuable comments. This work is supported by a Grant-in-Aid for Scientific Research on Innovative Areas ‘Heavy Electrons’ ( Nos. 20102002 and 20102003 ) and Grant-in-Aid for Scientific Research (S) ( No. 20224015 ) of Ministry of Education, Culture, Sports, Science and Technology, Japan. Photoemission experiments were carried out under the Visiting Researcher's Program of the Institute for Solid State Physics, the University of Tokyo. R.Y. acknowledges the financial support from Research Fellowship of the Japan Society for the Promotion of Science.

PY - 2011/5

Y1 - 2011/5

N2 - 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 (π,0) and (π,π) 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.

AB - 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 (π,0) and (π,π) 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.

KW - C. Photoelectron spectroscopy

KW - D. Electronic structure

KW - D. Phase transitions

UR - http://www.scopus.com/inward/record.url?scp=79955781238&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79955781238&partnerID=8YFLogxK

U2 - 10.1016/j.jpcs.2010.10.048

DO - 10.1016/j.jpcs.2010.10.048

M3 - Article

AN - SCOPUS:79955781238

SN - 0022-3697

VL - 72

SP - 580

EP - 581

JO - Journal of Physics and Chemistry of Solids

JF - Journal of Physics and Chemistry of Solids

IS - 5

ER -