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Title: Pairing from strong repulsion in triangular lattice Hubbard model

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:
 [1] ; ORCiD logo [2] ;  [3]
  1. Univ. of Tennessee, Knoxville, TN (United States)
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  3. Univ. of Tennessee, Knoxville, TN (United States); Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Report Number(s):
LA-UR-17-28927
Journal ID: ISSN 2469-9950; PRBMDO
Grant/Contract Number:
AC52-06NA25396
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)
Research Org:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org:
USDOE Laboratory Directed Research and Development (LDRD) Program
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Material Science
OSTI Identifier:
1477721
Alternate Identifier(s):
OSTI ID: 1434194

Zhang, Shang -Shun, Zhu, Wei, and Batista, Cristian D. Pairing from strong repulsion in triangular lattice Hubbard model. United States: N. p., 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. doi:10.1103/PhysRevB.97.140507.
Zhang, Shang -Shun, Zhu, Wei, and Batista, Cristian D. 2018. "Pairing from strong repulsion in triangular lattice Hubbard model". United States. doi:10.1103/PhysRevB.97.140507.
@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}
}

Works referenced in this record:

Ordering, metastability and phase transitions in two-dimensional systems
journal, April 1973
  • Kosterlitz, J M; Thouless, D J
  • Journal of Physics C: Solid State Physics, Vol. 6, Issue 7, p. 1181-1203
  • DOI: 10.1088/0022-3719/6/7/010