Electron correlation in the FeSe superconductor studied by bulk-sensitive photoemission spectroscopy

被引：48

作者：

Yamasaki, A. ^{[1
]}

Matsui, Y. ^{[1
]}

Imada, S. ^{[2
]}

Takase, K. ^{[3
]}

Azuma, H. ^{[3
]}

Muro, T. ^{[4
]}

Kato, Y. ^{[4
]}

Higashiya, A. ^{[5
]}

Sekiyama, A. ^{[6
]}

Suga, S. ^{[6
]}

Yabashi, M. ^{[4
]}

Tamasaku, K. ^{[5
]}

Ishikawa, T. ^{[5
]}

Terashima, K. ^{[2
]}

Kobori, H. ^{[1
]}

Sugimura, A. ^{[1
]}

Umeyama, N. ^{[7
,8
]}

Sato, H. ^{[9
]}

Hara, Y. ^{[10
]}

Miyagawa, N. ^{[7
]}

Ikeda, S. I. ^{[8
]}

机构：

[1] Konan Univ, Fac Sci & Engn, Kobe, Hyogo 6588501, Japan

[2] Ritsumeikan Univ, Coll Sci & Engn, Kusatsu 5258577, Japan

[3] Nihon Univ, Coll Sci & Technol, Chiyoda Ku, Tokyo 1018308, Japan

[4] Japan Synchrotron Res Inst, Sayo, Hyogo 6795198, Japan

[5] RIKEN, Sayo, Hyogo 6795148, Japan

[6] Osaka Univ, Grad Sch Engn Sci, Osaka 5608531, Japan

[7] Tokyo Univ Sci, Dept Appl Phys, Shinjuku Ku, Tokyo 1628601, Japan

[8] AIST, Nanoelect Res Inst, Tsukuba, Ibaraki 3058568, Japan

[9] Chuo Univ, Fac Sci & Engn, Bunkyo Ku, Tokyo 1128551, Japan

[10] Ibaraki Natl Coll Technol, Hitachinaka, Ibaraki 3128508, Japan

来源：

PHYSICAL REVIEW B | 2010年 / 82卷 / 18期

关键词：

RESOLUTION; STATES;

D O I：

10.1103/PhysRevB.82.184511

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We have investigated the electronic structures of recently discovered superconductor FeSe by soft-x-ray and hard-x-ray photoemission spectroscopy with high-bulk sensitivity. The large Fe 3d spectral weight is located in the vicinity of the Fermi level (E-F), which is demonstrated to be a coherent quasiparticle peak. Compared with the results of the band-structure calculation with local-density approximation, Fe 3d band narrowing and the energy shift of the band toward E-F are found, suggesting an importance of the electron correlation effect in FeSe. The self-energy correction provides the larger mass enhancement value (Z(-1) similar or equal to 3.6) than in Fe-As superconductors and enables us to separate an incoherent part from the spectrum. These features are quite consistent with the results of recent dynamical mean-field calculations, in which the incoherent part is attributed to the lower Hubbard band.

引用

页数：7

共 50 条

[41] SURFACE AND BULK ELECTRONIC-STRUCTURE OF CE METAL STUDIED BY HIGH-RESOLUTION RESONANT PHOTOEMISSION [J].

WESCHKE, E ;

LAUBSCHAT, C ;

SIMMONS, T ;

DOMKE, M ;

STREBEL, O ;

KAINDL, G .

PHYSICAL REVIEW B, 1991, 44 (15) :8304-8307

[42] Characterization of the transverse coherence of hard synchrotron radiation by intensity interferometry [J].

Yabashi, M ;

Tamasaku, K ;

Ishikawa, T .

PHYSICAL REVIEW LETTERS, 2001, 87 (14) :140801/1-140801/4

[43] Coexistence of strongly mixed-valence and heavy-fermion character in SmOs4Sb12 studied by soft- and hard-x-ray spectroscopy [J].

Yamasaki, A. ;

Imada, S. ;

Higashimichi, H. ;

Fujiwara, H. ;

Saita, T. ;

Miyamachi, T. ;

Sekiyama, A. ;

Sugawara, H. ;

Kikuchi, D. ;

Sato, H. ;

Higashiya, A. ;

Yabashi, M. ;

Tamasaku, K. ;

Miwa, D. ;

Ishikawa, T. ;

Suga, S. .

PHYSICAL REVIEW LETTERS, 2007, 98 (15)

[44] Possible Kondo resonance in PrFe4P12 studied by bulk-sensitive photoemission -: art. no. 113103 [J].

Yamasaki, A ;

Imada, S ;

Nanba, T ;

Sekiyama, A ;

Sugawara, H ;

Sato, H ;

Sekine, C ;

Shirotani, I ;

Harima, H ;

Suga, S .

PHYSICAL REVIEW B, 2004, 70 (11) :113103-1

[45] Evidence for weak electronic correlations in iron pnictides [J].

Yang, W. L. ;

Sorini, A. P. ;

Chen, C-C. ;

Moritz, B. ;

Lee, W-S ;

Vernay, F. ;

Olalde-Velasco, P. ;

Denlinger, J. D. ;

Delley, B. ;

Chu, J-H ;

Analytis, J. G. ;

Fisher, I. R. ;

Ren, Z. A. ;

Yang, J. ;

Lu, W. ;

Zhao, Z. X. ;

van den Brink, J. ;

Hussain, Z. ;

Shen, Z-X ;

Devereaux, T. P. .

PHYSICAL REVIEW B, 2009, 80 (01)

[46] ATOMIC SUBSHELL PHOTOIONIZATION CROSS-SECTIONS AND ASYMMETRY PARAMETERS - 1 LESS-THAN-OR-EQUAL-TO Z LESS-THAN-OR-EQUAL-TO 103 [J].

YEH, JJ ;

LINDAU, I .

ATOMIC DATA AND NUCLEAR DATA TABLES, 1985, 32 (01) :1-155

[47] Electronic structure of the BaFe2As2 family of iron-pnictide superconductors [J].

Yi, M. ;

Lu, D. H. ;

Analytis, J. G. ;

Chu, J. -H. ;

Mo, S. -K. ;

He, R. -H. ;

Moore, R. G. ;

Zhou, X. J. ;

Chen, G. F. ;

Luo, J. L. ;

Wang, N. L. ;

Hussain, Z. ;

Singh, D. J. ;

Fisher, I. R. ;

Shen, Z. -X. .

PHYSICAL REVIEW B, 2009, 80 (02)

[48] Antiferromagnetic Nuclear Resonance in the Quasi-Two-Dimensional (CuBr)LaNb2O7 [J].

Yoshida, Makoto ;

Ogata, Nobuyuki ;

Takigawa, Masashi ;

Kitano, Taro ;

Kageyama, Hiroshi ;

Ajiro, Yoshitami ;

Yoshimura, Kazuyoshi .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2008, 77 (10)

[49] Electronic Structure of Superconducting FeSe Studied by High-Resolution Photoemission Spectroscopy [J].

Yoshida, Rikiya ;

Wakita, Takanori ;

Okazaki, Hiroyuki ;

Mizuguchi, Yoshikazu ;

Tsuda, Shunsuke ;

Takano, Yoshihiko ;

Takeya, Hiroyuki ;

Hirata, Kazuto ;

Muro, Takayuki ;

Okawa, Mario ;

Ishizaka, Kyoko ;

Shin, Shik ;

Harima, Hisatomo ;

Hirai, Masaaki ;

Muraoka, Yuji ;

Yokoya, Takayoshi .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2009, 78 (03)

[50] Crystal growth and superconductivity of FeSex [J].

Zhang, S. B. ;

Sun, Y. P. ;

Zhu, X. D. ;

Zhu, X. B. ;

Swang, B. ;

Lei, Hc ;

Luo, X. ;

Yang, Z. R. ;

Song, W. H. ;

Dai, J. M. .

SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 2009, 22 (01)

← 1 2 3 4 5 →