Spin triplet pairing in high temperature superconductors |
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| Authors: | Zhao Min-Guan Zhao Xiao-Ning Zeng Xiao-Lan |
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| Affiliation: | (1) Centre of Theoretical Physics, Chinese Centre of Advanced Technology and Science (World Laboratory), Institute of Solid State Physics, Sichuan Normal University, Chengdu, People's Republic of China;(2) Present address: Institute of Solid State Physics, Sichuan Normal University, 601166 Chengdu, People's Republic of China |
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| Abstract: | Various superconductivity mechanisms show that the electron pair is in spin singlet (S=0) belowTc. In contrast with these, our EPR measurements show that the electron pair is in spin triplet (S=1) rather than the spin singlet. Since an intense zero field absorption was observed in the high temperature superconductors of YBa2Cu3O7–y, and YBa2Cu3O7–yF1, which violated various spin-pairing singlet superconductivity mechanisms. |
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