Microwave Studies of Exciton Condensation in Germanium

ISBN-13: 9781461585695 / Angielski / Miękka / 2012 / 90 str.

N. G. Basov

Opis

This volume examines a timely problem in solid state physics, the condensation of ex- citons in semiconductors. The papers in this volume describe a new approach to the study of exciton condensation based on microwave-frequency conductivity and the breakdown of an ex- citon gas in a microwave field, an effect discovered by the authors. These methods have been used in extensive studies of germanium and have produced important new data about the con- densation process. In addition to the experimental data, a theory is presented for the micro- wave breakdown of excitons in the presence of electron-hole droplets. Also included are three articles devoted to the experimental aspects of low-temperature semiconductor research. This volume will interest scientists and engineers involved- with research in solid state physics. CONTENTS Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 A. A. Manenkov Microwave Studies of Exciton Condensation in Ge. - - - - - - - - - - - - - - - - - - - - - - - - - 3 G. N. Mikhailova Microwave Breakdown of Excitons and the Kinetics of Free Carriers and Excitons in Germanium in the Presence of Electron-Hole Drops. - - - - - - - - - - - - 37 A. A. Manenkov, V. A. Milyaev, G. N. Mikhailova, V. A. Sanina, and A. S.

Spis treści

Microwave Studies of Exciton Condensation in Ge.- Microwave Breakdown of Excitons and the Kinetics of Free Carriers and Excitons in Germanium in the Presence of Electron-Hole Drops.- Microwave Breakdown Studies of Exciton Condensation in Ge and Luminescence during One- and Two-Photon Excitation of Carriers.- Microwave Absorption by Nonequilibrium Current Carriers in Germanium. A Method for Determining Carrier Concentration.- Microwave Methods for Studying Exciton Condensation in Semiconductors.- A Helium-3 Refrigerator for Studying Excitons in Ge at Temperatures Below 1°K.- Effects of Laser Heating on Germanium Samples at Liquid Helium Temperature.- Cyclotron Resonance and Radiative Recombination in Pure Ge with Laser Excitation.