Signature of hidden order and evidence for periodicity modification inURu2Si2 | Zendy

Rikiya Yoshida | Zendy; Yoshiaki Nakamura | Zendy; Masaki Fukui | Zendy; Yoshinori Haga | Zendy; Etsuji Yamamoto | Zendy; Yoshichika Ōnuki | Zendy; Mario Okawa | Zendy; Shik Shin | Zendy; Masaaki Hirai | Zendy; Yuji Muraoka | Zendy; T. Yokoya | Zendy

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Signature of hidden order and evidence for periodicity modification inURu2Si2

Author(s) -

Rikiya Yoshida,

Yoshiaki Nakamura,

Masaki Fukui,

Yoshinori Haga,

Etsuji Yamamoto,

Yoshichika Ōnuki,

Mario Okawa,

Shik Shin,

Masaaki Hirai,

Yuji Muraoka,

T. Yokoya

Publication year - 2010

Publication title -

physical review b

Language(s) - English

Resource type - Journals

eISSN - 1538-4489

pISSN - 1098-0121

DOI - 10.1103/physrevb.82.205108

Subject(s) - order (exchange) , signature (topology) , state (computer science) , fermi gamma ray space telescope , physics , condensed matter physics , spectroscopy , materials science , computer science , algorithm , quantum mechanics , mathematics , geometry , finance , economics

The detail of electronic structures near the Fermi level in URu₂Si₂ has been investigated employing state-of-art laser angle-resolved photoemission spectroscopy. The observation of a narrow dispersive band near the Fermi level in the ordered state as well as its absence in a Rh-substituted sample strongly suggest that the emergence of the narrow band is a clear signature of the hidden-order transition. The temperature dependence of the narrow band, which appears at the onset of the hidden-order transition, invokes the occurrence of periodicity modification in the ordered state, which is shown for the first time by any spectroscopic probe. We compare our data to other previous studies and discuss possible implications

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