Consequences of Broken Translational Symmetry in FeSexTe1-x

被引：17

作者：

Moreschini, L. ^{[1
]}

Lin, P. -H. ^{[2
]}

Lin, C. -H. ^{[3
,4
]}

Ku, W. ^{[3
,4
]}

Innocenti, D. ^{[1
,5
,6
]}

Chang, Y. J. ^{[1
,7
,8
]}

Walter, A. L. ^{[1
,7
]}

Kim, K. S. ^{[1
]}

Brouet, V. ^{[9
]}

Yeh, K. -W. ^{[10
]}

Wu, M. -K. ^{[11
]}

Rotenberg, E. ^{[1
]}

Bostwick, A. ^{[1
]}

Grioni, M. ^{[2
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA

[2] Ecole Polytech Fed Lausanne, Inst Condensed Matter Phys, CH-1015 Lausanne, Switzerland

[3] Brookhaven Natl Lab, Condensed Matter Phys & Mat Sci Dept, Upton, NY 11973 USA

[4] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA

[5] Univ Roma Tor Vergata, CNR SPIN, I-00133 Rome, Italy

[6] Univ Roma Tor Vergata, Dipartimento Ingn Civile & Ingn Informat, I-00133 Rome, Italy

[7] Max Planck Gesell, Fritz Haber Inst, Dept Phys Chem, D-14195 Berlin, Germany

[8] Univ Seoul, Dept Phys, Seoul 130743, South Korea

[9] Univ Paris 11, Phys Solides Lab, UMR 8502, F-91405 Orsay, France

[10] Acad Sinica, Inst Phys, Taipei 11529, Taiwan

[11] Natl Dong Hwa Univ, Dept Phys, Hualien 97401, Taiwan

来源：

PHYSICAL REVIEW LETTERS | 2014年 / 112卷 / 08期

关键词：

PHOTOELECTRON ANGULAR-DISTRIBUTIONS; ELECTRONIC-STRUCTURE; PHOTOEMISSION; SUPERCONDUCTIVITY; BAND;

D O I：

10.1103/PhysRevLett.112.087602

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We investigate the consequences of broken translational symmetry in the superconductor FeSexTe1-x using angle-resolved photoemission spectroscopy. We find that the intensity does not follow the periodicity dictated by the crystal structure, owing to the form of the perturbing potential and the symmetries of the Fe d orbitals. Their interplay leads to substantial differences in the orbital character and spectral features observed at nominally equivalent locations in the reciprocal space. Such differences cannot be accounted for by the usual dipole matrix element effects and are due instead to the structure factor, which must be explicitly considered whenever more than one atom is present in the unit cell.

引用

页数：5

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