Magnetism and superconductivity in FeSe1-xTex superconducor studied by Fe and Te Mossbauer spectroscopy

2015 Fiscal Year Final Research Report

• Project/Area Number: 24540371
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Kyoto University
• Principal Investigator: Kitao Shinji 京都大学, 原子炉実験所, 准教授 (00314295)
• Research Collaborator: KUROKUZU Masayuki 京都大学, 原子炉実験所, 非常勤研究員
• Project Period (FY): 2012-04-01 – 2016-03-31
• Keywords: 鉄系超伝導 / メスバウアー効果 / テルル / 磁気秩序 / 内部磁場

Outline of Final Research Achievements

In this study, Fe- and Te- Mossbauer spectroscopies were applied to a Fe-based superconductor, FeTe1-xSex. One of the main results was that we have observed internal magnetic field not only for Fe but also for Te when it has the antiferromagnetic order. This fact implies that the magnetic order in Fe affects the electronic state of Te through hybridization between Fe and Te orbitals.

Free Research Field

物性物理学