Physics – Condensed Matter – Quantum Gases
Scientific paper
2011-03-07
Physics
Condensed Matter
Quantum Gases
Scientific paper
Recent experiments on thin-film microcavities give evidence of Bose condensation of exciton-polariton states. Inspired by these observations, we consider the possibility that such exotic "half-light/half matter" states could be observed in thin-film organic semiconductors where the oscillator strength is generally stronger than in inorganic systems. Here we present a theoretical model and simulations of macroscopic exciton-polartiton condensates in thracene thin films sandwiched within a micro-meter scale resonant cavity and establish criteria for the conditions under which BEC could be achieved in these systems. We consider the effect of lattice disorder on the threshold intensities necessary to create polartion superfluid states and conclude that even allowing for up to 5% angular disorder of the molecules within the crystal lattice, the superfluid transition remains sharp.
Bittner Eric R.
Silva Carlos
Zaster Svitlana
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