Nonlinear magnetic field dependence of spin polarization in high-density two-dimensional electron systems

K. F. Yang, H. W. Liu, T. D. Mishima, M. B. Santos, K. Nagase, Y. Hirayama

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The spin polarization (P) of high-density InSb two-dimensional electron systems (2DESs) has been measured using both parallel and tilted magnetic fields. P is found to exhibit a superlinear increase with the total field B. This P-B nonlinearity results in a difference in spin susceptibility between its real value Χs and Χgm ∝ m *g* (m* and g * are the effective mass and g factor, respectively) as routinely used in experiments. We demonstrate that such a P-B nonlinearity originates from the linearly P-dependent g* due to the exchange coupling of electrons rather than from the electron correlation as predicted for the low-density 2DES.

Original languageEnglish
Article number083010
JournalNew Journal of Physics
Volume13
DOIs
Publication statusPublished - 2011 Aug

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Nonlinear magnetic field dependence of spin polarization in high-density two-dimensional electron systems'. Together they form a unique fingerprint.

Cite this