Non-Fermi Liquid Behavior and Continuously Tunable Resistivity Exponents in the Anderson-Hubbard Model at Finite Temperature
Abstract
Here, we employ a recently developed computational many-body technique to study for the first time the half-filled Anderson-Hubbard 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 non-Fermi 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)
- OSTI Identifier:
- 1399224
- Alternate Identifier(s):
- OSTI ID: 1376938
- Grant/Contract Number:
- AC05-00OR22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review Letters
- Additional Journal Information:
- Journal Volume: 119; Journal Issue: 8; Journal ID: ISSN 0031-9007
- 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. Non-Fermi Liquid Behavior and Continuously Tunable Resistivity Exponents in the Anderson-Hubbard 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. Non-Fermi Liquid Behavior and Continuously Tunable Resistivity Exponents in the Anderson-Hubbard Model at Finite Temperature. United States. https://doi.org/10.1103/PhysRevLett.119.086601
Patel, Niravkumar D., Mukherjee, Anamitra, Kaushal, Nitin, Moreo, Adriana, and Dagotto, Elbio R. Thu .
"Non-Fermi Liquid Behavior and Continuously Tunable Resistivity Exponents in the Anderson-Hubbard Model at Finite Temperature". United States. https://doi.org/10.1103/PhysRevLett.119.086601. https://www.osti.gov/servlets/purl/1399224.
@article{osti_1399224,
title = {Non-Fermi Liquid Behavior and Continuously Tunable Resistivity Exponents in the Anderson-Hubbard 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 many-body technique to study for the first time the half-filled Anderson-Hubbard 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 non-Fermi 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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