| Original Articles |
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Time-Reversal Symmetry Breaking: an Evidence for Spin Pairing
in High-Tc Superconductors |
| GUO Wei;HAN Ru-Shan |
| Department of Physics, Peking University, Beijing 100871
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| Cite this article: |
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GUO Wei, HAN Ru-Shan 2001 Chin. Phys. Lett. 18 582-583 |
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Abstract Effective spin coupling leads to local triplet pairing in the antiferromagnetically ordered CuO2 plane as shown by the K-J model [Guo et al. Chin. Phys. Lett. 18 (2001) 103]. The precession of the spin triplet(S=1, Sz = 0) in the CuO2 plane does not hold time-reversal invariance due to the dimpled CuO structure, which not only modifies the gap function but also contributes to the asymmetry of the high-Tc tunneling conductance. In principle, the effect of time-reversal symmetry breaking can be manifested by the variation of the conductance asymmetry by applying a magnetic field at superconductor-insulator-normal metal junction, which should provide a direct evidence for triplet pairing in the high-Tc superconductors.
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| Keywords:
74.20.-z
11.30.Er
71.10.L
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Published: 01 April 2001
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| PACS: |
74.20.-z
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(Theories and models of superconducting state)
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11.30.Er
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(Charge conjugation, parity, time reversal, and other discrete symmetries)
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71.10.L
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