A calculation for polar Kerr effect in high temperature cuprate superconductors
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arXiv
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| Main Authors: | , , , , |
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| Format: | Preprint |
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2015
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| _version_ | 1866916130100084736 |
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| author | Sharma, Gargee Tewari, Sumanta Goswami, Pallab Yakovenko, V. M. Chakravarty, Sudip |
| author_facet | Sharma, Gargee Tewari, Sumanta Goswami, Pallab Yakovenko, V. M. Chakravarty, Sudip |
| contents | A mechanism is proposed for the tantalizing evidence of polar Kerr effect in a class of high temperature superconductors--the signs of the Kerr angle from two opposite faces of the same sample are identical and magnetic field training is non-existent. The mechanism does not break global time reversal symmetry, as in an antiferromagnet, and results in zero Faraday effect. It is best understood in a phenomenological model of bilayer cuprates, such as YBCO, in which intra-bilayer tunneling nucleates a chiral d-density wave such that the individual layers have opposite chirality. Although specific to the chiral d-density wave, the mechanism may be more general to any quasi-two-dimensional orbital antiferromagnet in which time reversal symmetry is broken in each plane, but not when averaged macroscopically. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_1503_07174 |
| institution | arXiv |
| publishDate | 2015 |
| record_format | arxiv |
| spellingShingle | A calculation for polar Kerr effect in high temperature cuprate superconductors Sharma, Gargee Tewari, Sumanta Goswami, Pallab Yakovenko, V. M. Chakravarty, Sudip Strongly Correlated Electrons A mechanism is proposed for the tantalizing evidence of polar Kerr effect in a class of high temperature superconductors--the signs of the Kerr angle from two opposite faces of the same sample are identical and magnetic field training is non-existent. The mechanism does not break global time reversal symmetry, as in an antiferromagnet, and results in zero Faraday effect. It is best understood in a phenomenological model of bilayer cuprates, such as YBCO, in which intra-bilayer tunneling nucleates a chiral d-density wave such that the individual layers have opposite chirality. Although specific to the chiral d-density wave, the mechanism may be more general to any quasi-two-dimensional orbital antiferromagnet in which time reversal symmetry is broken in each plane, but not when averaged macroscopically. |
| title | A calculation for polar Kerr effect in high temperature cuprate superconductors |
| topic | Strongly Correlated Electrons |
| url | https://arxiv.org/abs/1503.07174 |