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Title: Energy scales of the doped Anderson lattice model

Journal Article · · Physical Review B
 [1];  [2];  [2];  [2];  [3]
  1. Pohang Univ. of Science and Technology (POSTECH) (Korea, Republic of). Dept. of Chemistry
  2. Rutgers Univ., Piscataway, NJ (United States). Dept. of Physics and Astronomy
  3. Pohang Univ. of Science and Technology (POSTECH) (Korea, Republic of). Dept. of Chemistry, and Dept. of Physics

This paper explores the energy scales of the doped Anderson lattice model using dynamical mean-field theory (DMFT), using a continuous-time Quantum Monte Carlo (CTQMC) impurity solver. We show that the low temperature properties of the lattice can not be scaled using the single ion local Kondo temperature TK but instead are governed by a doping-dependent coherence temperature T* which can be used to scale the temperature dependence of the spectral function, transport properties, and entropy. At half filling T* closely approximates the single ion TK, but as the filling nc is reduced to zero, T* also vanishes. The coherence temperature T* is shown to play a role of effective impurity Kondo temperature in the lattice model, and physical observables show significant evolution at T*. In the DMFT framework, we showed that the hybridization strength of the effective impurity model is qualitatively affected by the doping level, and determines T* in the lattice model.

Research Organization:
Rutgers Univ., Piscataway, NJ (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-99ER45790
OSTI ID:
1509680
Alternate ID(s):
OSTI ID: 1506725
Journal Information:
Physical Review B, Vol. 99, Issue 16; ISSN 2469-9950
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 4 works
Citation information provided by
Web of Science

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Cited By (1)

Quantum Criticality in the Two-Dimensional Periodic Anderson Model journal June 2019

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