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Title: Role of Coulomb interaction in the phase formation of fcc Ce: Correlation matrix renormalization theory

Abstract

The effect of electronic Coulomb interaction on the phase formation of fcc Ce lattice is investigated by full ab initio calculations without adjustable Coulomb U and J parameters using the Gutzwiller wavefunction-based correlation matrix renormalization theory (CMRT). Its total energy and pressure as a function of volume agree reasonably well with existing DFT+Gutzwiller calculations and experiments, indicating correct capture of electronic correlation and screening effects within the CMRT formalism. Here, a stable phase is found in line with the experimental α-Ce phase, and a lurking phase is identified supposedly linked with the experimental γ-Ce phase. A criterion based on the local 4f electron charge fluctuation is introduced to confirm the distinct electronic correlation natures of both phases.

Authors:
 [1]; ORCiD logo [1];  [2];  [1];  [1]
  1. Ames Lab., and Iowa State Univ., Ames, IA (United States)
  2. Iowa State Univ., Ames, IA (United States)
Publication Date:
Research Org.:
Ames Lab., Ames, IA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES). Materials Sciences & Engineering Division
OSTI Identifier:
1819754
Report Number(s):
IS-J-10,583
Journal ID: ISSN 2469-9950; TRN: US2214183
Grant/Contract Number:  
AC02-07CH11358
Resource Type:
Accepted Manuscript
Journal Name:
Physical Review B
Additional Journal Information:
Journal Volume: 104; Journal Issue: 8; 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; First-principles calculations; Lanthanides; Strongly correlated systems

Citation Formats

Liu, Jun, Yao, Yongxin, Zhang, Jianhua, Ho, Kai-Ming, and Wang, Cai-Zhuang. Role of Coulomb interaction in the phase formation of fcc Ce: Correlation matrix renormalization theory. United States: N. p., 2021. Web. doi:10.1103/physrevb.104.l081113.
Liu, Jun, Yao, Yongxin, Zhang, Jianhua, Ho, Kai-Ming, & Wang, Cai-Zhuang. Role of Coulomb interaction in the phase formation of fcc Ce: Correlation matrix renormalization theory. United States. https://doi.org/10.1103/physrevb.104.l081113
Liu, Jun, Yao, Yongxin, Zhang, Jianhua, Ho, Kai-Ming, and Wang, Cai-Zhuang. Mon . "Role of Coulomb interaction in the phase formation of fcc Ce: Correlation matrix renormalization theory". United States. https://doi.org/10.1103/physrevb.104.l081113. https://www.osti.gov/servlets/purl/1819754.
@article{osti_1819754,
title = {Role of Coulomb interaction in the phase formation of fcc Ce: Correlation matrix renormalization theory},
author = {Liu, Jun and Yao, Yongxin and Zhang, Jianhua and Ho, Kai-Ming and Wang, Cai-Zhuang},
abstractNote = {The effect of electronic Coulomb interaction on the phase formation of fcc Ce lattice is investigated by full ab initio calculations without adjustable Coulomb U and J parameters using the Gutzwiller wavefunction-based correlation matrix renormalization theory (CMRT). Its total energy and pressure as a function of volume agree reasonably well with existing DFT+Gutzwiller calculations and experiments, indicating correct capture of electronic correlation and screening effects within the CMRT formalism. Here, a stable phase is found in line with the experimental α-Ce phase, and a lurking phase is identified supposedly linked with the experimental γ-Ce phase. A criterion based on the local 4f electron charge fluctuation is introduced to confirm the distinct electronic correlation natures of both phases.},
doi = {10.1103/physrevb.104.l081113},
journal = {Physical Review B},
number = 8,
volume = 104,
place = {United States},
year = {Mon Aug 30 00:00:00 EDT 2021},
month = {Mon Aug 30 00:00:00 EDT 2021}
}

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