Observation of Softened Fe Modes in K-Doped BaFe2As2 via 57Fe Nuclear Resonant Inelastic Scattering

被引：8

作者：

Tsutsui, Satoshi ^{[1
]}

Lee, Chul-Ho ^{[2
,3
]}

Tassel, Cedric ^{[4
]}

Yoshida, Yoshiyuki ^{[2
]}

Yoda, Yoshitaka ^{[1
,5
]}

Kihou, Kunihiro ^{[2
,3
]}

Iyo, Akira ^{[2
,3
]}

Eisaki, Hiroshi ^{[2
,3
]}

机构：

[1] SPring 8, Japan Synchrotron Radiat Res Inst, Sayo, Hyogo 6795198, Japan

[2] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki 3058568, Japan

[3] Japan Sci & Technol Agcy, TRIP, Chiyoda Ku, Tokyo 1020075, Japan

[4] Kyoto Univ, Grad Sch Sci, Kyoto 6068502, Japan

[5] Japan Sci & Technol Agcy, CREST, Kawaguchi, Saitama 3320012, Japan

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2010年 / 79卷 / 01期

关键词：

BaFe2As2; superconductivity; nuclear resonant inelastic scattering; partial phonon density of states; SUPERCONDUCTIVITY;

D O I：

10.1143/JPSJ.79.013706

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The contribution of Fe atomic motion to the superconductivity in the K-doped BaFe2As2 system was investigated by Fe-57 nuclear resonant inelastic scattering. A significant K-doping effect was observed in the Fe partial phonon density of states. The present results indicate that low-lying Fe optical modes are softened by K-doping. This demonstrates that the Fe atomic motion correlates with the superconductivity in K-doped BaFe2As2.

引用

页数：4

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