A Measurable Force driven by an Excitonic Condensate in DQWs

TL;DR

This paper predicts a measurable force caused by excitonic condensates in double quantum wells, proposing experiments to detect this force, which could provide new insights into quantum condensed matter phenomena.

Contribution

It introduces the concept of an EC-force, a new measurable force related to excitonic condensates, and proposes experimental methods to detect it, distinct from existing photoluminescence techniques.

Findings

Prediction of a new EC-force of approximately 10^{-9} N

Proposal of experiments using micromechanical oscillators

Potential for decisive detection of excitonic condensates

Abstract

New free energy related signatures of the condensed excitons in Double Quantum Wells (DQW) are predicted and experiments are proposed to measure the effects. These signatures are related to the measurement of a conceptually new kind of force ($\approx 10^{-9} N$) due to the condensate. This force, which may be coined as the Exciton Condensate (EC)-force is attractive and reminiscent of the Casimir force between two perfect metallic plates, but also distinctively different from it by its driving mechanism and dependence on the parameters of the condensate. The proposed experiments here are based on a recent experimental work on a driven micromechanical oscillator with a proven high quality factor. The free energy related measurements are immune to the commonly agreed drawbacks of the existing photoluminescence experiments. In this regard, the proposed experiments are highly decisive about the EC.