Observation of two fine structures related to the hidden order in the spectral functions of URu 2Si 2

Rikiya Yoshida; Masaki Fukui; Yoshinori Haga; Etsuji Yamamoto; Yoshichika Onuki; Mario Okawa; Walid Malaeb; Shik Shin; Yuji Muraoka; Takayoshi Yokoya

doi:10.1103/PhysRevB.85.241102

Observation of two fine structures related to the hidden order in the spectral functions of URu ₂Si ₂

Rikiya Yoshida^*, Masaki Fukui, Yoshinori Haga, Etsuji Yamamoto, Yoshichika Onuki, Mario Okawa, Walid Malaeb, Shik Shin, Yuji Muraoka, Takayoshi Yokoya

^*Corresponding author for this work

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

17 Citations (Scopus)

Abstract

We studied the spectral functions of URu ₂Si ₂ in the hidden-order state by means of ultrahigh-resolution angle-resolved photoemission spectroscopy. High signal-to-noise ratio data uncover the existence of two anomalous fine structures, namely a "splitting" in the previously reported narrow dispersive band, and a small, dispersionless "satellite" structure. These structures can be explained by neither ordinary bands nor the development of a hybridization of two states; thus our observation should evoke the consideration of complicated many-body effects. As a possible origin, we suggest the existence of electron-mode coupling in the ordered state.

Original language	English
Article number	241102
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	85
Issue number	24
DOIs	https://doi.org/10.1103/PhysRevB.85.241102
Publication status	Published - 2012 Jun 12
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.85.241102

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title = "Observation of two fine structures related to the hidden order in the spectral functions of URu 2Si 2 ",

abstract = "We studied the spectral functions of URu 2Si 2 in the hidden-order state by means of ultrahigh-resolution angle-resolved photoemission spectroscopy. High signal-to-noise ratio data uncover the existence of two anomalous fine structures, namely a {"}splitting{"} in the previously reported narrow dispersive band, and a small, dispersionless {"}satellite{"} structure. These structures can be explained by neither ordinary bands nor the development of a hybridization of two states; thus our observation should evoke the consideration of complicated many-body effects. As a possible origin, we suggest the existence of electron-mode coupling in the ordered state.",

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AU - Yoshida, Rikiya

AU - Fukui, Masaki

AU - Haga, Yoshinori

AU - Yamamoto, Etsuji

AU - Onuki, Yoshichika

AU - Okawa, Mario

AU - Malaeb, Walid

AU - Shin, Shik

AU - Muraoka, Yuji

AU - Yokoya, Takayoshi

PY - 2012/6/12

Y1 - 2012/6/12

N2 - We studied the spectral functions of URu 2Si 2 in the hidden-order state by means of ultrahigh-resolution angle-resolved photoemission spectroscopy. High signal-to-noise ratio data uncover the existence of two anomalous fine structures, namely a "splitting" in the previously reported narrow dispersive band, and a small, dispersionless "satellite" structure. These structures can be explained by neither ordinary bands nor the development of a hybridization of two states; thus our observation should evoke the consideration of complicated many-body effects. As a possible origin, we suggest the existence of electron-mode coupling in the ordered state.

AB - We studied the spectral functions of URu 2Si 2 in the hidden-order state by means of ultrahigh-resolution angle-resolved photoemission spectroscopy. High signal-to-noise ratio data uncover the existence of two anomalous fine structures, namely a "splitting" in the previously reported narrow dispersive band, and a small, dispersionless "satellite" structure. These structures can be explained by neither ordinary bands nor the development of a hybridization of two states; thus our observation should evoke the consideration of complicated many-body effects. As a possible origin, we suggest the existence of electron-mode coupling in the ordered state.

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Observation of two fine structures related to the hidden order in the spectral functions of URu ₂Si ₂

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