Femtosecond Near-Field Spin Microscopy of Magnetic/Superconducting Heterostructures

Abstract

Under the AASERT program, our student developed magnetically active II-VI diluted magnetic semiconductor (DMS) surface quantum well "substrates" upon which to epitaxially grow and pattern ferromagnetic Fe films in order to produce spin-dependent potentials. This material phase produced a variety of flux-focusing magnetic patterns including planar wedges and variable-spaced single domain particle arrays with nominally 0.1-0.5 micron feature sizes. These patterns are designed to create a field-driven spin-dependent energy landscape for optically-pumped or doped carriers and provide a basis for spatial measurements of electronic spin transport.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1998
Accession Number
ADA386690

Entities

People

  • David Awschalom

Organizations

  • University of California, Santa Barbara

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Air Force
  • Domain Walls
  • Electronics
  • Femtosecond Time
  • Films
  • Free Energy
  • Heterojunctions
  • Magnetic Films
  • Magnetic Forces
  • Materials
  • Measurement
  • Microscopy
  • Near Field
  • Particles
  • Quantum Wells
  • Semiconductors
  • Transport Ships

Fields of Study

  • Physics

Readers

  • Electromagnetic Wave Scattering and Antenna Radiation Engineering
  • Quantum Dot Semiconductor Device Photonics and Graphene Optoelectronic Materials and THz Physics.
  • Semiconductor Device Technology

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene
  • Quantum Computing
  • Quantum Science - Quantum Dots
  • Space