NQR investigations of the high-Tc superconductor Ba2YCU3O7 |
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| Affiliation: | 1. Department of Physics, Don State Technical University, Rostov on Don, Russia;2. School of Engineering Physics, Hanoi University of Science and Technology, Ha Noi, Vietnam;3. Institute of Research and Development, Duy Tan University, Da Nang, Vietnam;4. Department of Materials and Materials Engineering, Le Quy Don Technical University, Ha Noi, Vietnam;2. University of York, York, United Kingdom |
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| Abstract: | NQR measurements of 63,65Cu in both the normal and superconducting state are reported for the Cu1 and Cu2 sites in Ba2YCu3O7. An anomalous behaviour in the vicinity and below Tc is observed: after a steep decrease at Tc the quadrupole frequency increases with decreasing temperature. |
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