Enhancement of superconductivity by frustrating the charge order

Zi-Xiang Li, Marvin L. Cohen, and Dung-Hai Lee

Phys. Rev. B 100, 245105 – Published 4 December 2019

Abstract

We study strong electron-phonon interacting systems where the geometry of the crystalline lattice frustrates the formation of charge order. Our results show that under such condition, high- $T_{c}$ superconductivity can occur in a wide range of electron-phonon coupling strengths. This result is obtained by studying the Holstein model on triangular lattice using sign-problem-free quantum Monte Carlo method.

5 More

Received 20 January 2019
Revised 7 February 2019

DOI:https://doi.org/10.1103/PhysRevB.100.245105

Physics Subject Headings (PhySH)

Charge order Cooper pairs Electron-phonon coupling Impurities in superconductors Superconducting fluctuations Superconducting phase transition

Superconductors

BCS theory Methods in superconductivity

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Zi-Xiang Li , Marvin L. Cohen, and Dung-Hai Lee^*

Department of Physics, University of California, Berkeley, California 94720, USA
and Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA

^*Corresponding author: dunghai@berkeley.edu

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand

Issue

Vol. 100, Iss. 24 — 15 December 2019

Reuse & Permissions

Access Options

Article Available via CHORUS

Download Accepted Manuscript

Author publication services for translation and copyediting assistance advertisement

Physical Review B

covering condensed matter and materials physics