Q Dependence of Magnetic Resonance Mode on FeTe0.5Se0.5 Studied by Inelastic Neutron Scattering

被引：0

作者：

Ishikado, Motoyuki ^{[1
]}

Kodama, Katsuaki ^{[2
]}

Kajimoto, Ryoichi ^{[3
]}

Nakamura, Mitsutaka ^{[3
]}

Inamura, Yasuhiro ^{[3
]}

Ikeuchi, Kazuhiko ^{[1
]}

Ji, Sungdae ^{[1
,4
]}

Arai, Masatoshi ^{[1
,5
]}

Shamoto, Shin-ichi ^{[3
]}

机构：

[1] CROSS, Neutron Sci & Technol Ctr, Tokai, Ibaraki 3191106, Japan

[2] Japan Atom Energy Agcy, Mat Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

[3] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

[4] Max Planck POSTECH Ctr, Pohang 37673, South Korea

[5] European Spallat Source ESS AB, Stora Algatan 4, SE-22100 Lund, Sweden

来源：

CONDENSED MATTER | 2019年 / 4卷 / 03期

基金：

日本学术振兴会;

关键词：

magnetic resonance; Q dependence; s(+/-) wave; SUPERCONDUCTIVITY;

D O I：

10.3390/condmat4030069

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Inelastic neutron scattering measurements have been performed on a superconducting single crystal FeTe0.5Se0.5 to examine the Q-dependent enhancement of the dynamical structure factor, S(Q,E), from Q = (0, 0) to (pi, pi), including (pi, 0) in the superconducting state. In most of iron-based superconductors, S(Q,E) is enhanced at Q = (pi, 0), where the "magnetic resonance mode" is commonly observed in the unfolded Brillouin zone. Constant-E cuts of S(Q,E) suggest that the enhancement is not uniform in the magnetic excitation, and limited around Q = (pi, 0). This result is consistent with the theoretical simulation of the magnetic resonance mode due to the Bardeen-Cooper-Schrieffer coherence factor with the sign-reversing order parameter of s +/- wave.

引用

页数：10

共 41 条

[1] QUANTUM MATERIALS Shape resonances in superstripes [J].

Bianconi, Antonio .

NATURE PHYSICS, 2013, 9 (09) :536-537

[2] Shape resonances in multi-condensate granular superconductors formed by networks of nanoscale-striped puddles [J].

Bianconi, Antonio .

10TH INTERNATIONAL CONFERENCE ON MATERIALS AND MECHANISMS OF SUPERCONDUCTIVITY (M2S-X), 2013, 449

[3] Is LaFeAsO1-xFx an electron-phonon superconductor? [J].

Boeri, L. ;

Dolgov, O. V. ;

Golubov, A. A. .

PHYSICAL REVIEW LETTERS, 2008, 101 (02)

[4] Feshbach resonance and mesoscopic phase separation near a quantum critical point in multiband FeAs-based superconductors [J].

Caivano, Rocchina ;

Fratini, Michela ;

Poccia, Nicola ;

Ricci, Alessandro ;

Puri, Alessandro ;

Ren, Zhi-An ;

Dong, Xiao-Li ;

Yang, Jie ;

Lu, Wei ;

Zhao, Zhong-Xian ;

Barba, Luisa ;

Bianconi, Antonio .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2009, 22 (01)

[5] Inelastic Neutron-Scattering Measurements of a Three-Dimensional Spin Resonance in the FeAs-Based BaFe1.9Ni0.1As2 Superconductor [J].

Chi, Songxue ;

Schneidewind, Astrid ;

Zhao, Jun ;

Harriger, Leland W. ;

Li, Linjun ;

Luo, Yongkang ;

Cao, Guanghan ;

Xu, Zhu'an ;

Loewenhaupt, Micheal ;

Hu, Jiangping ;

Dai, Pengcheng .

PHYSICAL REVIEW LETTERS, 2009, 102 (10)

[6] Unconventional superconductivity in Ba0.6K0.4Fe2As2 from inelastic neutron scattering [J].

Christianson, A. D. ;

Goremychkin, E. A. ;

Osborn, R. ;

Rosenkranz, S. ;

Lumsden, M. D. ;

Malliakas, C. D. ;

Todorov, I. S. ;

Claus, H. ;

Chung, D. Y. ;

Kanatzidis, M. G. ;

Bewley, R. I. ;

Guidi, T. .

NATURE, 2008, 456 (7224) :930-932

[7] Magnetism, superconductivity, and pairing symmetry in iron-based superconductors [J].

Chubukov, A. V. ;

Efremov, D. V. ;

Eremin, I. .

PHYSICAL REVIEW B, 2008, 78 (13)

[8] Reciprocal-space structure and dispersion of the magnetic resonant mode in the superconducting phase of RbxFe2-ySe2 single crystals [J].

Friemel, G. ;

Park, J. T. ;

Maier, T. A. ;

Tsurkan, V. ;

Li, Yuan ;

Deisenhofer, J. ;

von Nidda, H. -A. Krug ;

Loidl, A. ;

Ivanov, A. ;

Keimer, B. ;

Inosov, D. S. .

PHYSICAL REVIEW B, 2012, 85 (14)

[9] Unconventional s-Wave Superconductivity in Fe(Se,Te) [J].

Hanaguri, T. ;

Niitaka, S. ;

Kuroki, K. ;

Takagi, H. .

SCIENCE, 2010, 328 (5977) :474-476

[10] Two distinct superconducting pairing states divided by the nematic end point in FeSe1-xSx [J].

Hanaguri, Tetsuo ;

Iwaya, Katsuya ;

Kohsaka, Yuhki ;

Machida, Tadashi ;

Watashige, Tatsuya ;

Kasahara, Shigeru ;

Shibauchi, Takasada ;

Matsuda, Yuji .

SCIENCE ADVANCES, 2018, 4 (05)

← 1 2 3 4 5 →