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Probing oxygen in high Tc superconductor LaSrCuO by negative muons |
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| Authors: | K Nishiyama K Nagamine H Kitazawa E Torikai H Kojima I Tanaka |
| Institution: | (1) Meson Science Laboratory, University of Tokyo (UT-MSL), Hongo 7-3-1, Bunkyoku, 03-811-6382 Tokyo, Japan;(2) The Institute of Physical and Chemical Research (RIKEN), Hirosawa 2-1, 0484-62-1111 Wako-shi Saitama, Japan;(3) Faculty of Engineering, The University of Yamanashi, Takeda 4-3-11, 0552-52-1111 Koufu-shi Yamanashi, Japan |
| Abstract: | A novel microscopic method of muon spin rotation for negative muon (μ−) attached to oxygen is applied on highT c materials LaSrCuO. The paramagnetic shift and relaxation rate are measured as a function of Sr concentration and temperature. Analysis shows the large difference in shift and relaxation between two different sites. A large anisotropy was also observed by preliminary measurements along different crystalline axes. |
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