Dynamical Order and Superconductivity in a Frustrated Many-Body System

J. Tindall, F. Schlawin, M. Buzzi, D. Nicoletti, J. R. Coulthard, H. Gao, A. Cavalleri, M. A. Sentef, and D. Jaksch
Phys. Rev. Lett. 125, 137001 – Published 22 September 2020
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Abstract

In triangular lattice structures, spatial anisotropy and frustration can lead to rich equilibrium phase diagrams with regions containing complex, highly entangled states of matter. In this work, we study the driven two-rung triangular Hubbard model and evolve these states out of equilibrium, observing how the interplay between the driving and the initial state unexpectedly shuts down the particle-hole excitation pathway. This restriction, which symmetry arguments fail to predict, dictates the transient dynamics of the system, causing the available particle-hole degrees of freedom to manifest uniform long-range order. We discuss implications of our results for a recent experiment on photoinduced superconductivity in κ(BEDTTTF)2Cu[N(CN)2]Br molecules.

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  • Received 14 May 2020
  • Revised 23 August 2020
  • Accepted 25 August 2020

DOI:https://doi.org/10.1103/PhysRevLett.125.137001

© 2020 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied PhysicsGeneral Physics

Authors & Affiliations

J. Tindall1, F. Schlawin1, M. Buzzi2, D. Nicoletti2, J. R. Coulthard1, H. Gao1, A. Cavalleri1,2, M. A. Sentef2,3, and D. Jaksch1,4

  • 1Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom
  • 2Max Planck Institute for the Structure and Dynamics of Matter, 22761 Hamburg, Germany
  • 3Institute for Theoretical Physics, University of Bremen, Otto-Hahn-Allee 1, 28359 Bremen, Germany
  • 4Centre for Quantum Technologies, National University of Singapore, 3 Science Drive 2, Singapore 117543

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Issue

Vol. 125, Iss. 13 — 25 September 2020

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