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Title: Pair Density Wave in the Doped t - J Model with Ring Exchange on a Triangular Lattice

Journal Article · · Physical Review Letters
 [1];  [1];  [2]
  1. Hong Kong Univ. (Hong Kong). Dept. of Physics
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
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In our previous work [Phys. Rev. Lett. 121, 046401 (2018)], we found a quantum spin liquid phase with a spinon Fermi surface in the two dimensional spin-1/2 Heisenberg model with four-spin ring exchange on a triangular lattice. In this work we dope the spinon Fermi surface phase by studying the t-J model with four-spin ring exchange. We perform density matrix renormalization group calculations on four-leg cylinders of a triangular lattice and find that the dominant pair correlation function is that of a pair density wave; i.e., it is oscillatory while decaying with distance with a power law. The doping dependence of the period is studied. This is the first example where a pair density wave is the dominant pairing in a generic strongly interacting system where the pair density wave cannot be explained as a composite order and no special symmetry is required.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-03ER46076; C6026-16W; 16324216; 16307117
OSTI ID:
1609483
Alternate ID(s):
OSTI ID: 1509506; OSTI ID: 1777859
Journal Information:
Physical Review Letters, Vol. 122, Issue 16; ISSN 0031-9007
Publisher:
American Physical Society (APS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 12 works
Citation information provided by
Web of Science

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Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
Physics
Exchange interaction
Spin liquid
Superconductivity
Mott insulators
Strongly correlated systems
Density matrix renormalization group
Luttinger liquid model
t-J model