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Title: Study of multiband disordered systems using the typical medium dynamical cluster approximation

Abstract

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.

Authors:
 [1];  [2];  [1];  [1];  [1];  [3];  [4];  [1];  [1]
  1. Louisiana State Univ., Baton Rouge, LA (United States)
  2. Univ. of Michigan, Ann Arbor, MI (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Brookhaven National Lab. (BNL), Upton, NY (United States); State Univ. of New York (SUNY), Stony Brook, NY (United States)
Publication Date:
Research Org.:
Brookhaven National Lab. (BNL), Upton, NY (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF); Louisiana Board of Regents (United States)
OSTI Identifier:
1240595
Alternate Identifier(s):
OSTI ID: 1225400; OSTI ID: 1261281
Report Number(s):
BNL-111796-2016-JA
Journal ID: ISSN 1098-0121; R&D Project: PM002; KC0202030
Grant/Contract Number:  
SC00112704; AC05-00OR22725; DEAC02-98CH10886; AC02-98CH10886; EPS-1003897
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review. B, Condensed Matter and Materials Physics
Additional Journal Information:
Journal Volume: 92; Journal Issue: 20; Journal ID: ISSN 1098-0121
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY

Citation Formats

Zhang, Yi, Terletska, Hanna, Moore, C., Ekuma, Chinedu, Tam, Ka-Ming, Berlijn, Tom, Ku, Wei, Moreno, Juana, and Jarrell, Mark. Study of multiband disordered systems using the typical medium dynamical cluster approximation. United States: N. p., 2015. Web. doi:10.1103/PhysRevB.92.205111.
Zhang, Yi, Terletska, Hanna, Moore, C., Ekuma, Chinedu, Tam, Ka-Ming, Berlijn, Tom, Ku, Wei, Moreno, Juana, & Jarrell, Mark. Study of multiband disordered systems using the typical medium dynamical cluster approximation. United States. doi:10.1103/PhysRevB.92.205111.
Zhang, Yi, Terletska, Hanna, Moore, C., Ekuma, Chinedu, Tam, Ka-Ming, Berlijn, Tom, Ku, Wei, Moreno, Juana, and Jarrell, Mark. Fri . "Study of multiband disordered systems using the typical medium dynamical cluster approximation". United States. doi:10.1103/PhysRevB.92.205111. https://www.osti.gov/servlets/purl/1240595.
@article{osti_1240595,
title = {Study of multiband disordered systems using the typical medium dynamical cluster approximation},
author = {Zhang, Yi and Terletska, Hanna and Moore, C. and Ekuma, Chinedu and Tam, Ka-Ming and Berlijn, Tom and Ku, Wei and Moreno, Juana and Jarrell, Mark},
abstractNote = {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.},
doi = {10.1103/PhysRevB.92.205111},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 20,
volume = 92,
place = {United States},
year = {2015},
month = {11}
}

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    Works referencing / citing this record:

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