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Multiple Subband Crossing in a One-dimensional Hole Gas with Enhanced G-factors by A.J Daneshvar; C.J.B Ford; A.R Hamilton; M.Y Simmons; M Pepper; D.A Ritchie is a Physics and Astronomy article available to read on EtoBox.

What is Multiple Subband Crossing in a One-dimensional Hole Gas with Enhanced G-factors about?

We have measured the transport properties of one-dimensional ballistic constrictions defined in a two-dimensional hole gas. The conductance quantization of the constrictions switches between even and odd multiples of e/h as a function of a parallel magnetic field, as spin-splitting causes the subbands of the 1D channel to cross repeatedly. The in-plane g-factors of the 1D subbands are measured from the low field data. We find them to increase as the number of occupied 1D subbands decreases and attribute this enhancement of the g-factor to Coulomb interactions. The quantization at high fields shows that the subbands have crossed four times; in this regime the system is highly magnetized and exchange effects should be of particular importance.

Who reads Multiple Subband Crossing in a One-dimensional Hole Gas with Enhanced G-factors?

Author

A.J Daneshvar; C.J.B Ford; A.R Hamilton; M.Y Simmons; M Pepper; D.A Ritchie

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0921-4526)

Published

1998

Language

EN

Field

Physics and Astronomy (Physical Sciences)