Journal article
Interactions between Fermi polarons in monolayer WS2
JB Muir, J Levinsen, SK Earl, MA Conway, JH Cole, M Wurdack, R Mishra, DJ Ing, E Estrecho, Y Lu, DK Efimkin, JO Tollerud, EA Ostrovskaya, MM Parish, JA Davis
Nature Communications | NATURE PORTFOLIO | Published : 2022
Abstract
Interactions between quasiparticles are of fundamental importance and ultimately determine the macroscopic properties of quantum matter. A famous example is the phenomenon of superconductivity, which arises from attractive electron-electron interactions that are mediated by phonons or even other more exotic fluctuations in the material. Here we introduce mobile exciton impurities into a two-dimensional electron gas and investigate the interactions between the resulting Fermi polaron quasiparticles. We employ multi-dimensional coherent spectroscopy on monolayer WS2, which provides an ideal platform for determining the nature of polaron-polaron interactions due to the underlying trion fine str..
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Grants
Awarded by National Computational Infrastructure
Funding Acknowledgements
This work was supported by the Australian Research Council Center of Excellence in Future Low-Energy Electronics Technologies (CE170100039). M.M.P. and J.L. were supported through the Australian Research Council Future Fellowships FT200100619 and FT160100244, respectively. J.H.C. and D.J.I. also acknowledge the support of the Australian National Computational Infrastructure (NCI) and the ARC Centre of Excellence in Exciton Science (CE170100026). Y.L. acknowledges the support of ARC Centre of Excellence in Quantum Computation and Communication Technology (CE170100012). E.E. was supported through the Australian Research Council Discovery Early Career Research Award DE220100712.