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:
-
- Louisiana State Univ., Baton Rouge, LA (United States)
- Univ. of Michigan, Ann Arbor, MI (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- 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 Laboratory (BNL), Upton, NY (United States); Oak Ridge National Laboratory (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. https://doi.org/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. https://doi.org/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 = {Fri Nov 06 00:00:00 EST 2015},
month = {Fri Nov 06 00:00:00 EST 2015}
}
Web of Science
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