Triplet p + ip pairing correlations in the doped Kane-Mele-Hubbard model: A quantum Monte Carlo study
Abstract
By using the constrained-phase quantum Monte Carlo method, we performed a systematic study of the pairing correlations in the ground state of the doped Kane-Mele-Hubbard model on a honeycomb lattice. We find that pairing correlations with d + id symmetry dominate close to half filling, but pairing correlations with p+ip symmetry dominate as hole doping moves the system below three-quarters filling. We correlate these behaviors of the pairing correlations with the topology of the Fermi surfaces of the non-interacting problem. We also find that the effective pairing correlation is enhanced greatly as the interaction increases, and these superconducting correlations are robust against varying the spin-orbit coupling strength. Finally, our numerical results suggest a possible way to realize spin triplet superconductivity in doped honeycomb-like materials or ultracold atoms in optical traps.
- Authors:
-
- Beijing Normal Univ., Beijing (China). Dept. of Physics; Beijing Computational Science Research Center, Beijing (China)
- Beijing Computational Science Research Center, Beijing (China)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States). Theoretical Division
- Publication Date:
- Research Org.:
- Los Alamos National Laboratory (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE; NSCF; Fundamental Research Funds for the Central Universities
- OSTI Identifier:
- 1329857
- Report Number(s):
- LA-UR-14-28548
Journal ID: ISSN 0295-5075
- Grant/Contract Number:
- AC52-06NA25396; 11374034; 11334012; U1530401; 2014KJJCB26
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Europhysics Letters
- Additional Journal Information:
- Journal Volume: 111; Journal Issue: 4; Journal ID: ISSN 0295-5075
- Publisher:
- IOP Publishing
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; Material Science
Citation Formats
Ma, Tianxing, Lin, Hai-Qing, and Gubernatis, James E. Triplet p + ip pairing correlations in the doped Kane-Mele-Hubbard model: A quantum Monte Carlo study. United States: N. p., 2015.
Web. doi:10.1209/0295-5075/111/47003.
Ma, Tianxing, Lin, Hai-Qing, & Gubernatis, James E. Triplet p + ip pairing correlations in the doped Kane-Mele-Hubbard model: A quantum Monte Carlo study. United States. https://doi.org/10.1209/0295-5075/111/47003
Ma, Tianxing, Lin, Hai-Qing, and Gubernatis, James E. Tue .
"Triplet p + ip pairing correlations in the doped Kane-Mele-Hubbard model: A quantum Monte Carlo study". United States. https://doi.org/10.1209/0295-5075/111/47003. https://www.osti.gov/servlets/purl/1329857.
@article{osti_1329857,
title = {Triplet p + ip pairing correlations in the doped Kane-Mele-Hubbard model: A quantum Monte Carlo study},
author = {Ma, Tianxing and Lin, Hai-Qing and Gubernatis, James E.},
abstractNote = {By using the constrained-phase quantum Monte Carlo method, we performed a systematic study of the pairing correlations in the ground state of the doped Kane-Mele-Hubbard model on a honeycomb lattice. We find that pairing correlations with d + id symmetry dominate close to half filling, but pairing correlations with p+ip symmetry dominate as hole doping moves the system below three-quarters filling. We correlate these behaviors of the pairing correlations with the topology of the Fermi surfaces of the non-interacting problem. We also find that the effective pairing correlation is enhanced greatly as the interaction increases, and these superconducting correlations are robust against varying the spin-orbit coupling strength. Finally, our numerical results suggest a possible way to realize spin triplet superconductivity in doped honeycomb-like materials or ultracold atoms in optical traps.},
doi = {10.1209/0295-5075/111/47003},
journal = {Europhysics Letters},
number = 4,
volume = 111,
place = {United States},
year = {Tue Sep 01 00:00:00 EDT 2015},
month = {Tue Sep 01 00:00:00 EDT 2015}
}
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