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Title: Coherence temperature in the diluted periodic Anderson model

Abstract

The Kondo and periodic Anderson model (PAM) are known to provide a microscopic picture of many of the fundamental properties of heavy-fermion materials and, more generally, a variety of strong correlation phenomena in 4f and 5f systems. Here, we apply the determinant quantum Monte Carlo method to include disorder in the PAM, specifically the removal of a fraction x of the localized orbitals. We determine the evolution of the coherence temperature T*, where the local moments and conduction electrons become entwined in a heavy-fermion fluid, with x and with the hybridization V between localized and conduction orbitals. We recover several of the principal observed trends in T* of doped heavy fermions, and we also show that, within this theoretical framework, the calculated nuclear magnetic resonance relaxation rate tracks the experimentally measured behavior in pure and doped CeCoIn 5. Finally, our results contribute to important issues in the interpretation of local probes of disordered, strongly correlated systems.

Authors:
 [1];  [2];  [1];  [3];  [1];  [3]
  1. Universidade Federal do Rio de Janeiro (Brazil)
  2. The Abdus Salam International Centre for Theoretical Physics, Trieste (Italy)
  3. Univ. of California, Davis, CA (United States)
Publication Date:
Research Org.:
Univ. of California, Davis, CA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22). Materials Sciences & Engineering Division; National Science Foundation (NSF); USDOE
OSTI Identifier:
1597036
Alternate Identifier(s):
OSTI ID: 1511770
Grant/Contract Number:  
SC0014671; DMR-1807889; DMR-1005393
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 99; Journal Issue: 19; Journal ID: ISSN 2469-9950
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Magnetism; Disordered systems; Strongly correlated systems; Lattice models in condensed matter; Quantum Monte Carlo

Citation Formats

Costa, N. C., Mendes-Santos, T., Paiva, T., Curro, N. J., dos Santos, R. R., and Scalettar, R. T. Coherence temperature in the diluted periodic Anderson model. United States: N. p., 2019. Web. doi:10.1103/PhysRevB.99.195116.
Costa, N. C., Mendes-Santos, T., Paiva, T., Curro, N. J., dos Santos, R. R., & Scalettar, R. T. Coherence temperature in the diluted periodic Anderson model. United States. doi:10.1103/PhysRevB.99.195116.
Costa, N. C., Mendes-Santos, T., Paiva, T., Curro, N. J., dos Santos, R. R., and Scalettar, R. T. Thu . "Coherence temperature in the diluted periodic Anderson model". United States. doi:10.1103/PhysRevB.99.195116.
@article{osti_1597036,
title = {Coherence temperature in the diluted periodic Anderson model},
author = {Costa, N. C. and Mendes-Santos, T. and Paiva, T. and Curro, N. J. and dos Santos, R. R. and Scalettar, R. T.},
abstractNote = {The Kondo and periodic Anderson model (PAM) are known to provide a microscopic picture of many of the fundamental properties of heavy-fermion materials and, more generally, a variety of strong correlation phenomena in 4f and 5f systems. Here, we apply the determinant quantum Monte Carlo method to include disorder in the PAM, specifically the removal of a fraction x of the localized orbitals. We determine the evolution of the coherence temperature T*, where the local moments and conduction electrons become entwined in a heavy-fermion fluid, with x and with the hybridization V between localized and conduction orbitals. We recover several of the principal observed trends in T* of doped heavy fermions, and we also show that, within this theoretical framework, the calculated nuclear magnetic resonance relaxation rate tracks the experimentally measured behavior in pure and doped CeCoIn5. Finally, our results contribute to important issues in the interpretation of local probes of disordered, strongly correlated systems.},
doi = {10.1103/PhysRevB.99.195116},
journal = {Physical Review B},
number = 19,
volume = 99,
place = {United States},
year = {2019},
month = {5}
}

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