Cu-NMR Study of Bi2Sr1.6La0.4CuO6+δ Superconductor in Very High Magnetic Fields
Cu-NMR Study of Bi2Sr1.6La0.4CuO6+δ Superconductor in Very High Magnetic Fields
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极高磁场中 Bi2Sr1.6La0.4CuO6+δ 超导体的 Cu-NMR 研究
DOI：
10.1088/1742-6596/400/2/022052
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发表时间：
2012
期刊：
影响因子：
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通讯作者：
Shinji Kawasaki
中科院分区：
文献类型：
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作者：
H.Shishido;Y.Mizukami;T.Shibauchi;M.Shimozawa;S.Yasumoto;D.Watanabe;M.Yamashita;H.Ikeda;T.Terashima;H.Kontani;Y.Matsuda;T. Saito;M. Maesato;Kouji SEGAWA;Shinji Kawasaki
我们报告了在高达 45 T 的极高磁场下对单层氧化铜 Bi 2 Sr 1.6 La 0.4 CuO 6+ δ (T c= 32 K) 进行 63、 65 Cu-NMR 测量的结果。高磁场完全抑制了超导性，并揭示了赝能隙基态。 63 Cu-NMR奈特位移表明在零温极限下费米能级处仍存在有限的态密度，这表明赝能隙基态是费米面体积有限的金属态。
We report the results of 63, 65 Cu-NMR measurements on single-layered copper-oxide Bi 2 Sr 1.6 La 0.4 CuO 6+ δ (T c= 32 K) conducted under very high magnetic fields up to 45 T The high magnetic field suppresses superconductivity completely and the pseudogap ground state is revealed. The 63 Cu-NMR Knight shift shows that there remains a finite density of states at the Fermi level in the zero-temperature limit, which indicates that the pseudogap ground state is a metallic state with a finite volume of Fermi surface.