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Rotational symmetry breaking in Bi2Sr2CaCu2O8+δ probed by polarized femtosecond spectroscopy

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/57649

Title: Rotational symmetry breaking in Bi2Sr2CaCu2O8+δ probed by polarized femtosecond spectroscopy
Authors: Toda, Y. Browse this author →KAKEN DB
Kawanokami, F. Browse this author
Kurosawa, T. Browse this author
Oda, M. Browse this author
Madan, I. Browse this author
Mertelj, T. Browse this author
Kabanov, V. V. Browse this author
Mihailovic, D. Browse this author
Issue Date: 22-Sep-2014
Publisher: American Physical Society
Journal Title: Physical Review B
Volume: 90
Issue: 9
Publisher DOI: 10.1103/PhysRevB.90.094513
Abstract: The quasiparticle (QP) dynamics with different symmetry is investigated in the superconducting (SC) and normal state of the high-temperature superconductor Bi2Sr2CaCu2O8+delta (Bi2212) using optical pump-probe experiments with different light polarizations at different doping levels. The observation of distinct selection rules for SC excitations present in A(1g) and B-1g symmetries, and for the pseudogap (PG) excitations present in A(1g) and B-2g symmetries by the probe, and absence of any dependence on the pump beam polarization leads to the unequivocal conclusion of the existence of a spontaneous spatial symmetry breaking in the PG state not limited to the sample surface.
Rights: ©2014 American Physical Society
Type: article
URI: http://hdl.handle.net/2115/57649
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 戸田 泰則

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