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Study of multiband disordered systems using the typical medium dynamical cluster approximation [electronic resource].

Published:
Washington, D.C. : United States. Dept. of Energy. Office of Basic Energy Sciences, 2015.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy
Physical Description:
Article numbers 205,111 : digital, PDF file
Additional Creators:
Oak Ridge National Laboratory, United States. Department of Energy. Office of Basic Energy Sciences, National Science Foundation (U.S.), and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
In this paper, we generalize the typical medium dynamical cluster approximation to multiband disordered systems. Using our extended formalism, we perform a systematic study of the nonlocal correlation effects induced by disorder on the density of states and the mobility edge of the three-dimensional two-band Anderson model. We include interband and intraband hopping and an intraband disorder potential. Our results are consistent with those obtained by the transfer matrix and the kernel polynomial methods. We apply the method to KxFe2-ySe2 with Fe vacancies. Despite the strong vacancy disorder and anisotropy, we find the material is not an Anderson insulator. Finally, our results demonstrate the application of the typical medium dynamical cluster approximation method to study Anderson localization in real materials.
Report Numbers:
E 1.99:1261281
Subject(s):
Note:
Published through SciTech Connect.
11/06/2015.
"KC0403040"
"ERKCZ01"
Physical Review. B, Condensed Matter and Materials Physics 92 20 ISSN 1098-0121 AM
Yi Zhang; Hanna Terletska; C. Moore; Chinedu Ekuma; Ka-Ming Tam; Tom Berlijn; Wei Ku; Juana Moreno; Mark Jarrell.
Louisiana Board of Regents (United States)
Funding Information:
AC05-00OR22725
AC02-98CH10886
EPS-1003897
View MARC record | catkey: 23758213