Semimetal–Mott insulator quantum phase transition of the Hubbard model on the honeycomb lattice
Abstract
We take advantage of recent improvements in the grand canonical hybrid Monte Carlo algorithm, to perform a precision study of the single-particle gap in the hexagonal Hubbard model, with on-site electron-electron interactions. After carefully controlled analyses of the Trotter error, the thermodynamic limit, and finite-size scaling with inverse temperature, we find a critical coupling of Uc/κ = 3.834(14) and the critical exponent zν = 1.185(43). Under the assumption that this corresponds to the expected antiferromagnetic Mott transition, we are also able to provide a preliminary estimate β = 1.095(37) for the critical exponent of the order parameter. We consider our findings in view of the SU(2) Gross-Neveu, or chiral Heisenberg, universality class. Here, we also discuss the computational scaling of the hybrid Monte Carlo algorithm, and possible extensions of our work to carbon nanotubes, fullerenes, and topological insulators.
- Authors:
-
- Rheinische Friedrich-Wilhelms-Univ. Bonn (Germany)
- Univ. of Maryland, College Park, MD (United States); Forschungszentrum Jülich (Germany)
- Forschungszentrum Jülich (Germany)
- Rheinische Friedrich-Wilhelms-Univ. Bonn (Germany); Forschungszentrum Jülich (Germany)
- Publication Date:
- Research Org.:
- Univ. of Maryland, College Park, MD (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC)
- OSTI Identifier:
- 1850039
- Grant/Contract Number:
- FG02-93ER40762
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review. B
- Additional Journal Information:
- Journal Volume: 102; Journal Issue: 24; 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; Materials Science; Physics; Antiferromagnetism; Critical exponents; Electrical conductivity; Metal-insulator transition; Order parameters; Quantum phase transitions; Second order phase transitions
Citation Formats
Ostmeyer, Johann, Berkowitz, Evan, Krieg, Stefan, Lähde, Timo A., Luu, Thomas, and Urbach, Carsten. Semimetal–Mott insulator quantum phase transition of the Hubbard model on the honeycomb lattice. United States: N. p., 2020.
Web. doi:10.1103/physrevb.102.245105.
Ostmeyer, Johann, Berkowitz, Evan, Krieg, Stefan, Lähde, Timo A., Luu, Thomas, & Urbach, Carsten. Semimetal–Mott insulator quantum phase transition of the Hubbard model on the honeycomb lattice. United States. https://doi.org/10.1103/physrevb.102.245105
Ostmeyer, Johann, Berkowitz, Evan, Krieg, Stefan, Lähde, Timo A., Luu, Thomas, and Urbach, Carsten. Fri .
"Semimetal–Mott insulator quantum phase transition of the Hubbard model on the honeycomb lattice". United States. https://doi.org/10.1103/physrevb.102.245105. https://www.osti.gov/servlets/purl/1850039.
@article{osti_1850039,
title = {Semimetal–Mott insulator quantum phase transition of the Hubbard model on the honeycomb lattice},
author = {Ostmeyer, Johann and Berkowitz, Evan and Krieg, Stefan and Lähde, Timo A. and Luu, Thomas and Urbach, Carsten},
abstractNote = {We take advantage of recent improvements in the grand canonical hybrid Monte Carlo algorithm, to perform a precision study of the single-particle gap in the hexagonal Hubbard model, with on-site electron-electron interactions. After carefully controlled analyses of the Trotter error, the thermodynamic limit, and finite-size scaling with inverse temperature, we find a critical coupling of Uc/κ = 3.834(14) and the critical exponent zν = 1.185(43). Under the assumption that this corresponds to the expected antiferromagnetic Mott transition, we are also able to provide a preliminary estimate β = 1.095(37) for the critical exponent of the order parameter. We consider our findings in view of the SU(2) Gross-Neveu, or chiral Heisenberg, universality class. Here, we also discuss the computational scaling of the hybrid Monte Carlo algorithm, and possible extensions of our work to carbon nanotubes, fullerenes, and topological insulators.},
doi = {10.1103/physrevb.102.245105},
journal = {Physical Review. B},
number = 24,
volume = 102,
place = {United States},
year = {Fri Dec 04 00:00:00 EST 2020},
month = {Fri Dec 04 00:00:00 EST 2020}
}
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