NonFermi Liquid Behavior and Continuously Tunable Resistivity Exponents in the AndersonHubbard Model at Finite Temperature
Abstract
Here, we employ a recently developed computational manybody technique to study for the first time the halffilled AndersonHubbard model at finite temperature and arbitrary correlation U and disorder V strengths. Interestingly, the narrow zero temperature metallic range induced by disorder from the Mott insulator expands with increasing temperature in a manner resembling a quantum critical point. Our study of the resistivity temperature scaling T ^{α} for this metal reveals nonFermi liquid characteristics. Moreover, a continuous dependence of α on U and V from linear to nearly quadratic is observed. We argue that these exotic results arise from a systematic change with U and V of the “effective” disorder, a combination of quenched disorder and intrinsic localized spins.
 Authors:
 The Univ. of Tennessee, Knoxville, TN (United States)
 National Institute of Science Education and Research, Jatni (India)
 The Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
 Publication Date:
 Research Org.:
 Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
 Sponsoring Org.:
 USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC22)
 OSTI Identifier:
 1399224
 Alternate Identifier(s):
 OSTI ID: 1376938
 Grant/Contract Number:
 AC0500OR22725
 Resource Type:
 Journal Article: Accepted Manuscript
 Journal Name:
 Physical Review Letters
 Additional Journal Information:
 Journal Volume: 119; Journal Issue: 8; Journal ID: ISSN 00319007
 Publisher:
 American Physical Society (APS)
 Country of Publication:
 United States
 Language:
 English
 Subject:
 36 MATERIALS SCIENCE
Citation Formats
Patel, Niravkumar D., Mukherjee, Anamitra, Kaushal, Nitin, Moreo, Adriana, and Dagotto, Elbio R. NonFermi Liquid Behavior and Continuously Tunable Resistivity Exponents in the AndersonHubbard Model at Finite Temperature. United States: N. p., 2017.
Web. doi:10.1103/PhysRevLett.119.086601.
Patel, Niravkumar D., Mukherjee, Anamitra, Kaushal, Nitin, Moreo, Adriana, & Dagotto, Elbio R. NonFermi Liquid Behavior and Continuously Tunable Resistivity Exponents in the AndersonHubbard Model at Finite Temperature. United States. doi:10.1103/PhysRevLett.119.086601.
Patel, Niravkumar D., Mukherjee, Anamitra, Kaushal, Nitin, Moreo, Adriana, and Dagotto, Elbio R. 2017.
"NonFermi Liquid Behavior and Continuously Tunable Resistivity Exponents in the AndersonHubbard Model at Finite Temperature". United States.
doi:10.1103/PhysRevLett.119.086601.
@article{osti_1399224,
title = {NonFermi Liquid Behavior and Continuously Tunable Resistivity Exponents in the AndersonHubbard Model at Finite Temperature},
author = {Patel, Niravkumar D. and Mukherjee, Anamitra and Kaushal, Nitin and Moreo, Adriana and Dagotto, Elbio R.},
abstractNote = {Here, we employ a recently developed computational manybody technique to study for the first time the halffilled AndersonHubbard model at finite temperature and arbitrary correlation U and disorder V strengths. Interestingly, the narrow zero temperature metallic range induced by disorder from the Mott insulator expands with increasing temperature in a manner resembling a quantum critical point. Our study of the resistivity temperature scaling Tα for this metal reveals nonFermi liquid characteristics. Moreover, a continuous dependence of α on U and V from linear to nearly quadratic is observed. We argue that these exotic results arise from a systematic change with U and V of the “effective” disorder, a combination of quenched disorder and intrinsic localized spins.},
doi = {10.1103/PhysRevLett.119.086601},
journal = {Physical Review Letters},
number = 8,
volume = 119,
place = {United States},
year = 2017,
month = 8
}

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