Pairing from strong repulsion in triangular lattice Hubbard model
Abstract
Here, we propose a pairing mechanism between holes in the dilute limit of doped frustrated Mott insulators. Hole pairing arises from a hole-hole-magnon three-body bound state. This pairing mechanism has its roots on single-hole kinetic energy frustration, which favors antiferromagnetic (AFM) correlations around the hole. We demonstrate that the AFM polaron (hole-magnon bound state) produced by a single hole propagating on a field-induced polarized background is strong enough to bind a second hole. The effective interaction between these three-body bound states is repulsive, implying that this pairing mechanism is relevant for superconductivity.
- Authors:
-
- Univ. of Tennessee, Knoxville, TN (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Publication Date:
- Research Org.:
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Sponsoring Org.:
- USDOE Laboratory Directed Research and Development (LDRD) Program
- OSTI Identifier:
- 1477721
- Alternate Identifier(s):
- OSTI ID: 1434194
- Report Number(s):
- LA-UR-17-28927
Journal ID: ISSN 2469-9950; PRBMDO
- Grant/Contract Number:
- AC52-06NA25396
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review B
- Additional Journal Information:
- Journal Volume: 97; Journal Issue: 14; 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; Material Science
Citation Formats
Zhang, Shang -Shun, Zhu, Wei, and Batista, Cristian D. Pairing from strong repulsion in triangular lattice Hubbard model. United States: N. p., 2018.
Web. doi:10.1103/PhysRevB.97.140507.
Zhang, Shang -Shun, Zhu, Wei, & Batista, Cristian D. Pairing from strong repulsion in triangular lattice Hubbard model. United States. https://doi.org/10.1103/PhysRevB.97.140507
Zhang, Shang -Shun, Zhu, Wei, and Batista, Cristian D. Fri .
"Pairing from strong repulsion in triangular lattice Hubbard model". United States. https://doi.org/10.1103/PhysRevB.97.140507. https://www.osti.gov/servlets/purl/1477721.
@article{osti_1477721,
title = {Pairing from strong repulsion in triangular lattice Hubbard model},
author = {Zhang, Shang -Shun and Zhu, Wei and Batista, Cristian D.},
abstractNote = {Here, we propose a pairing mechanism between holes in the dilute limit of doped frustrated Mott insulators. Hole pairing arises from a hole-hole-magnon three-body bound state. This pairing mechanism has its roots on single-hole kinetic energy frustration, which favors antiferromagnetic (AFM) correlations around the hole. We demonstrate that the AFM polaron (hole-magnon bound state) produced by a single hole propagating on a field-induced polarized background is strong enough to bind a second hole. The effective interaction between these three-body bound states is repulsive, implying that this pairing mechanism is relevant for superconductivity.},
doi = {10.1103/PhysRevB.97.140507},
journal = {Physical Review B},
number = 14,
volume = 97,
place = {United States},
year = {2018},
month = {4}
}
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