Nonmagnetic pair-breaking effect in La(Fe_(1-x)Zn_x)AsO_(0.85) studied by ~(75)As and ~(139)La NMR and NQR

S. Kitagawa; Y. Nakai; T. lye; K. Ishida; Y. F. Guo; Y. G. Shi; K. Yamaura; E. Takayama-Muromachi

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Nonmagnetic pair-breaking effect in La(Fe_(1-x)Zn_x)AsO_(0.85) studied by ~(75)As and ~(139)La NMR and NQR

机译：〜（75）As和〜（139）La NMR和NQR研究La（Fe_（1-x）Zn_x）AsO_（0.85）中的非磁性成对断裂效应

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~(75)As and ~(139)La NMR and nuclear quadrupole resonance (NQR) studies on Zn-substituted LaFeAsOo.ss have been performed to microscopically investigate the Zn-impurity effects. Although superconductivity in LaFeAsO_(0.85) disappears by 3% Zn substitution, we found that NMR/NQR spectra and NMR physical quantities in the normal state are hardly changed, indicating that the crystal structure and electronic states are not modified by Zn substitution. Our results suggest that the suppression of superconductivity by Zn substitution is not due to the change of the normal-state properties, but due to strong nonmagnetic pair-breaking effect to superconductivity.

机译：已经进行了〜（75）As和〜（139）La NMR以及核四极共振（NQR）的研究，以对Zn取代的LaFeAsOo.ss进行微观研究，以研究锌杂质的影响。尽管LaFeAsO_（0.85）中的超导性通过3％的锌取代而消失，但我们发现正常状态下的NMR / NQR光谱和NMR物理量几乎不变，表明晶体结构和电子态没有被Zn取代修饰。我们的结果表明，通过Zn取代抑制超导不是由于常态性能的变化，而是由于对超导的强非磁性成对断裂作用。

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来源
《Physical review》 |2011年第18期|p.180501.1-180501.4|共4页
作者
S. Kitagawa; Y. Nakai; T. lye; K. Ishida; Y. F. Guo; Y. G. Shi; K. Yamaura; E. Takayama-Muromachi;
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作者单位

Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan,TRIP, JST, Sanban-cho bldg., 5, Sanban-cho, Chiyoda, Tokyo 102-0075, Japan;

Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan,TRIP, JST, Sanban-cho bldg., 5, Sanban-cho, Chiyoda, Tokyo 102-0075, Japan;

Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan,TRIP, JST, Sanban-cho bldg., 5, Sanban-cho, Chiyoda, Tokyo 102-0075, Japan;

Department of Physics, Graduate School of Science, Kyoto University, Kyoto 606-8502, Japan,TRIP, JST, Sanban-cho bldg., 5, Sanban-cho, Chiyoda, Tokyo 102-0075, Japan;

TRIP, JST, Sanban-cho bldg., 5, Sanban-cho, Chiyoda, Tokyo 102-0075, Japan,International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan;

TRIP, JST, Sanban-cho bldg., 5, Sanban-cho, Chiyoda, Tokyo 102-0075, Japan,International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan;

TRIP, JST, Sanban-cho bldg., 5, Sanban-cho, Chiyoda, Tokyo 102-0075, Japan,Superconducting Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044 Ibaraki, Japan;

TRIP, JST, Sanban-cho bldg., 5, Sanban-cho, Chiyoda, Tokyo 102-0075, Japan,International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan,Superconducting Materials Center, National Institute for Materials Science, 1-1 Namiki, Tsukuba, 305-0044 Ibaraki, Japan;

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nuclear magnetic resonance and relaxation; properties of type Ⅰand type Ⅱsuperconductors;

机译：核磁共振和弛豫;Ⅰ型和Ⅱ型超导体的特性;

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Nonmagnetic pair-breaking effect in La(Fe_(1-x)Zn_x)AsO_(0.85) studied by ~(75)As and ~(139)La NMR and NQR

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