Exotic electronic states in the world of flat bands: from theory to material

Update Item Information
Publication Type pre-print
School or College College of Engineering
Department Materials Science & Engineering
Creator Liu, Feng
Other Author Liu, Zheng; Wu, Yong-Shi
Title Exotic electronic states in the world of flat bands: from theory to material
Date 2014-01-01
Description It has long been noticed that special lattices contain single-electron at bands (FB) without any dispersion. Since the kinetic energy of electrons is quenched in the FB, this highly degenerate energy level becomes an ideal platform to achieve strongly correlated electronic states, such as magnetism, superconductivity and Wigner crystal. Recently, the FB has attracted increasing interests, because of the possibility to go beyond the conventional symmetry-breaking phases, towards topologically ordered phases, such as lattice versions of fractional quantum Hall states. This article reviews different aspects of FBs in a nutshell. Starting from the standard band theory, we aim to bridge the frontier of FBs with the textbook solid-state physics. Then, based on concrete examples, we show the common origin of FBs in terms of destructive interference, and discuss various many-body phases associated with such a singular band structure. In the end, we demonstrate real FBs in quantum frustrated materials and organometallic frameworks.
Type Text
Publisher IOP Publishing
Volume 23
Issue 7
Language eng
Bibliographic Citation Liu, Z., Liu, F., & Wu, Y.-S. (2014). Exotic electronic states in the world of flat bands: from theory to material. Chinese Physics B, 23(7), 077308.
Rights Management c2014 IOP ; This is an author-created, un-copyedited version of an article accepted for publication in Chinese Physics B., IOP Publishing Ltd is not responsible for any errors or omissions in this version of the manuscript or any version derived from it. The definitive publisher authenticated version is available online at DOI: 10.1088/1674-1056/23/7/077308
Format Medium application/pdf
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Identifier uspace,18797
ARK ark:/87278/s6v4449v
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Reference URL https://collections.lib.utah.edu/ark:/87278/s6v4449v