Resonant Pairing of Excitons in Semiconductor Heterostructures
Sergey V. Andreev
TL;DR
This paper proposes using indirect excitons in 2D semiconductor heterostructures as a platform to realize a bosonic analog of BCS superconductivity, with tunable quantum phase transitions to a biexcitonic state.
Contribution
It introduces a novel approach to achieve strongly correlated excitonic states in semiconductor heterostructures, enabling exploration of high-temperature bosonic superfluidity.
Findings
Quantum phase transition to biexcitonic state can be controlled by electric field.
Potential to reach high-temperature strongly correlated regimes.
Platform surpasses atomic gases in tunability and correlation strength.
Abstract
We suggest indirect excitons in 2D semiconductor heterostructures as a platform for realization of a bosonic analog of the Bardeen-Cooper-Schrieffer superconductor. The quantum phase transition to a biexcitonic gapped state can be controlled in situ by tuning the electric field applied to the structure in the growth direction. The proposed playground should allow one to go to strongly correlated and high-temperature regimes, unattainable with Feshbach resonant atomic gases.
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