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Rotational symmetry breaking in Bi2Sr2CaCu2O8+δ probed by polarized femtosecond spectroscopy
| 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 |
| Start Page: | 094513 |
| 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)
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Submitter: 戸田 泰則
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