Optical spectroscopy of magnetic 2D electron gases at the Los Alamos pulsed magnetic field facility

S. A. Crooker, D. G. Rickel, E. Johnston-Halperin, D. D. Awschalom, R. Knobel, N. Samarth, S. K. Lyo, A. Efros

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

A brief overview of the magnet technologies at the pulsed field facility at Los Alamos is presented, focusing on the experimental capabilities made possible by the unique generator-driven 60 T long-pulse magnet. Optical spectroscopy is one such beneficiary, and recent measurements of semiconductor systems are discussed, including studies of magnetic-disorder annealing in diluted magnetic semiconductors, "dark" excitons in CdSe quantum dots, and in particular, studies of negatively-charged exciton states in magnetic 2D electron gases. Here, the huge Zeeman energy inherent in these magnetically-doped II-VI materials results in a completely spin-polarized electron gas (even at low magnetic fields), and drives an apparent instability of the singlet (spin antiparallel) electrons that are bound to the photohole.

Original languageEnglish (US)
Pages (from-to)369-375
Number of pages7
JournalPhysica B: Condensed Matter
Volume298
Issue number1-4
DOIs
StatePublished - Apr 2001

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Optical spectroscopy of magnetic 2D electron gases at the Los Alamos pulsed magnetic field facility'. Together they form a unique fingerprint.

Cite this