Anomalous correlation effects and unique phase diagram of electron-doped FeSe revealed by photoemission spectroscopy

C. H. P. Wen; H. C. Xu; C. Chen; Z. C. Huang; X. Lou; Y. J. Pu; Q. Song; B. P. Xie; Mahmoud Abdel-Hafiez; D. A. Chareev; A. N. Vasiliev; R. Peng; D. L. Feng

doi:10.1038/ncomms10840

Nature Communications (Mar 2016)

Anomalous correlation effects and unique phase diagram of electron-doped FeSe revealed by photoemission spectroscopy

C. H. P. Wen,
H. C. Xu,
C. Chen,
Z. C. Huang,
X. Lou,
Y. J. Pu,
Q. Song,
B. P. Xie,
Mahmoud Abdel-Hafiez,
D. A. Chareev,
A. N. Vasiliev,
R. Peng,
D. L. Feng

Affiliations

C. H. P. Wen: Department of Physics and Advanced Materials Laboratory, State Key Laboratory of Surface Physics, Fudan University
H. C. Xu: Department of Physics and Advanced Materials Laboratory, State Key Laboratory of Surface Physics, Fudan University
C. Chen: Department of Physics and Advanced Materials Laboratory, State Key Laboratory of Surface Physics, Fudan University
Z. C. Huang: Department of Physics and Advanced Materials Laboratory, State Key Laboratory of Surface Physics, Fudan University
X. Lou: Department of Physics and Advanced Materials Laboratory, State Key Laboratory of Surface Physics, Fudan University
Y. J. Pu: Department of Physics and Advanced Materials Laboratory, State Key Laboratory of Surface Physics, Fudan University
Q. Song: Department of Physics and Advanced Materials Laboratory, State Key Laboratory of Surface Physics, Fudan University
B. P. Xie: Department of Physics and Advanced Materials Laboratory, State Key Laboratory of Surface Physics, Fudan University
Mahmoud Abdel-Hafiez: Institute of Physics, Goethe University Frankfurt
D. A. Chareev: Institute of Experimental Mineralogy, Russian Academy of Sciences, Chernogolovka, 119991 Moscow , Russia
A. N. Vasiliev: Low Temperature Physics and Superconductivity Department, M.V. Lomonosov Moscow State University
R. Peng: Department of Physics and Advanced Materials Laboratory, State Key Laboratory of Surface Physics, Fudan University
D. L. Feng: Department of Physics and Advanced Materials Laboratory, State Key Laboratory of Surface Physics, Fudan University

DOI: https://doi.org/10.1038/ncomms10840
Journal volume & issue: Vol. 7, no. 1
pp. 1 – 7

Abstract

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Electron doping is a powerful way to induce quantum phase transitions in materials and explore exotic states of matter. Here, Wen et al. present carefully-controlled potassium dosing in FeSe films and FeSe0.93S0.07bulk, which enhances superconductivity and induces other anomalous phases, revealing a complex phase diagram.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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