Физика Низких Температур: Том 27, Выпуск 9-10 (Сентябрь 2001), c. 1214-1220    ( к оглавлению , назад )

Ortnogonal-to-unitary ensemble crossover in the electronic specific heat of metal namoclusters

S. I. Mukhin and O. V. Kurapova

Theoretical Physics Department, Moscow Institute for Steel and Alloys, Moscow, Russia

I. I. Moiseev and M. N. Vargaftik

N. S. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, Moscow, Russia

Y. E. Volokitin, F. L. Mettes, and L. J. de Jongh

Kamerling Onnes Laboratory, Leiden University, Leiden, The Netherlands

Received August 27, 2001


We present a theoretical and experimental study on the influence of a magnetic field on the energy-level statistics in metal nanoparticles. Based on the random-matrix theory, a gradual field-in-duced crossover behavior is predicted from the orthogonal to the unitary ensemble. Experimental data of the electronic specific heat of metal nanoparticles for different fields in the quantum-size temperature regime compare favourably with these theoretical (analytical) predictions.

65.40.+g -
71.24.+q -
73.61.Tm -