Order-disorder transition in nanoscopic semiconductor quantum rings.
Using the path integral Monte Carlo technique we show that semiconductor quantum rings with up to six electrons exhibit a temperature, ring diameter, and particle number dependent transition between spin ordered and disordered Wigner crystals. Because of the small number of particles the transition extends over a broad temperature range and is clearly identifiable from the electron pair correlation functions.
Borrmann
P
P
Department of Physics, Carl von Ossietzky University, D-26111 Oldenburg, Germany.
Harting
J
J