Please use this identifier to cite or link to this item: https://doi.org/10.1103/PhysRevB.99.121108
Title: Discommensuration-driven superconductivity in the charge density wave phases of transition-metal dichalcogenides
Authors: Chen, Chuan 
Su, Lei
Neto, AH Castro 
Pereira, Vitor M 
Keywords: Science & Technology
Technology
Physical Sciences
Materials Science, Multidisciplinary
Physics, Applied
Physics, Condensed Matter
Materials Science
Physics
INCOMMENSURATE-COMMENSURATE TRANSITIONS
LAYERED TANTALUM DICHALCOGENIDES
JOSEPHSON-JUNCTION ARRAYS
SELF-CONSISTENT SOLUTIONS
LOCK-IN
SUPERLATTICE FORMATION
PEIERLS INSTABILITY
WIRE NETWORKS
DOMAIN-WALLS
STATES
Issue Date: 18-Mar-2019
Publisher: AMER PHYSICAL SOC
Citation: Chen, Chuan, Su, Lei, Neto, AH Castro, Pereira, Vitor M (2019-03-18). Discommensuration-driven superconductivity in the charge density wave phases of transition-metal dichalcogenides. PHYSICAL REVIEW B 99 (12). ScholarBank@NUS Repository. https://doi.org/10.1103/PhysRevB.99.121108
Abstract: © 2019 American Physical Society. We introduce a McMillan-Ginzburg-Landau theory to describe the cooperative coexistence of charge density and superconducting order in two-dimensional crystals. With a free energy that explicitly accounts for the competition between commensurate and incommensurate ground states, we are able to map the transition between these phases and monitor the development of discommensurations in the near-commensurate regime. Attributing the enhancement of superconducting order to density wave fluctuations, we propose a coupling scheme that yields a phase diagram in qualitative agreement with experiments in conducting transition-metal dichalcogenides. The model predicts the development of nonuniform superconductivity similar to that arising from a pair density wave, with a spatial texture driven by the underlying charge density wave fluctuations.
Source Title: PHYSICAL REVIEW B
URI: https://scholarbank.nus.edu.sg/handle/10635/155122
ISSN: 2469-9950
2469-9969
DOI: 10.1103/PhysRevB.99.121108
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