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Visualizing Uniaxial-strain Manipulation of Antiferromagnetic Domains in Fe1+YTe Using a Spin-polarized Scanning Tunneling Microscope
Published on: March 24, 2019
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Dynamical Order and Superconductivity in a Frustrated Many-Body System
J Tindall1, F Schlawin1, M Buzzi2
1Clarendon Laboratory, University of Oxford, Parks Road, Oxford OX1 3PU, United Kingdom.
Physical Review Letters
|October 9, 2020
Summary
Researchers studied a driven two-rung triangular Hubbard model, finding that driving unexpectedly closes particle-hole pathways. This leads to uniform long-range order in entangled states, impacting photoinduced superconductivity research.
Area of Science:
- Condensed Matter Physics
- Quantum Materials
- Many-Body Physics
Background:
- Triangular lattice structures exhibit spatial anisotropy and frustration, leading to complex equilibrium phases with entangled states.
- Driven quantum systems can exhibit novel non-equilibrium dynamics distinct from their equilibrium counterparts.
Purpose of the Study:
- To investigate the non-equilibrium dynamics of the driven two-rung triangular Hubbard model.
- To understand how external driving influences the emergent states of matter in frustrated lattice systems.
- To identify mechanisms that dictate transient dynamics and long-range order in driven quantum systems.
Main Methods:
- Numerical simulation of the driven two-rung Hubbard model.
- Analysis of particle-hole excitation pathways and symmetry properties.
- Investigation of transient dynamics and emergent order parameters.
Main Results:
- The interplay between driving and initial state unexpectedly suppresses particle-hole excitations.
- This suppression, not predicted by symmetry, dictates system dynamics.
- Transient dynamics lead to the emergence of uniform long-range order from entangled states.
Conclusions:
- The study reveals a novel mechanism for generating long-range order in driven quantum systems.
- Results offer insights into the dynamics of photoinduced superconductivity in materials like kappa-(BEDT-TTF)2Cu[N(CN)2]Br.
- The findings highlight the importance of considering non-equilibrium effects in understanding complex quantum matter.
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