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平成26年度(2014年度)第7回物理教室談話会

題目 Charge order, high-temperature superconductivity and pseudogap physics in the cuprates
講師 Johan Chang 氏
(ICMP, EPFL, CH-1015 Lausanne, Switzerland)
日時 平成26年8月8日 16:30~
場所 コラボレーション棟4F 共同研究室
概要  Recently, charge order has been observed by NMR [1], x-ray diffraction [2-6] and ultra sound [7] experiments in the cuprate system YBa2Cu3O7-x. The first part of this talk will be concerned with the most recent hard x-ray experiments [2-4] in high magnetic fields and competition between charge order and superconductivity will be discussed. This will be followed by a discussion of the possible connections between charge order and pseudogap physics. New photoemission spectroscopy data on the charge stripe order compound La1.6-xNd0.4SrxCuO4 will be presented [8].

[1] T. Wu et al., Nature 477, 191 (2011)
[2] E. Blackburn et al., Physical Review Letters 110, 137004 (2013)
[3] J. Chang et al., Nature Physics 8, 871 (2012)
[4] M. Hucker et al., arXiv:1405.7001
[5] S. Blanco-Canosa et al., Physical Review Letters 110, 187001 (2013)
[6] G. Ghiringhelli et al., Science 337, 821 (2012)
[7] D. LeBoeuf et al., Nature Physics 9, 79 (2013)
[8] C. E. Matt et al., in preparation
世話人 川崎 慎司(内線:7803)