Open AccessLight mediated superconducting transistor
Author(s) -
Kavokin A. V.,
Shelykh I. A.,
Glazov M. M.
Publication year - 2005
Publication title -
physica status solidi (c)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 46
eISSN - 1610-1642
pISSN - 1610-1634
DOI - 10.1002/pssc.200460348
Subject(s) - polariton , physics , condensed matter physics , quasiparticle , cooper pair , electron , electron hole , photon , effective mass (spring–mass system) , superfluidity , superconductivity , optics , quantum mechanics
Polaritons composed by electron‐hole pairs coupled to confined light modes in optical cavities may form a Bardeen‐Cooper‐Schriefer (BCS) superfluid. We propose a new transistor based on stimulated scattering of electron‐hole pairs into the BCS polariton mode. A pn‐junction embedded inside an optical cavity resonantly emits light into the cavity mode. If the cavity mode energy slightly exceeds the band‐gap energy, it couples with electron‐hole pairs with zero centre of mass wave‐vector but non‐zero wave‐vector of relative motion. This creates a super‐current in the plane of the structure. In an isotropic case, its direction is chosen by the system spontaneously. Otherwise, it is pinned to the external in‐plane bias. We calculate the phase diagram for the electron‐hole‐polariton system. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)