Fabrication and characterization of modulation-doped ZnSe/(Zn,Cd)Se (110) quantum wells: A new system for spin coherence studies

K. C. Ku, S. H. Chun, W. H. Wang, W. Fadgen, D. A. Issadore, N. Samarth, R. J. Epstein, D. D. Awschalom

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We describe the growth of modulation-doped ZnSe/(Zn,Cd)Se quantum wells on (110) GaAs substrates. Unlike the well-known protocol for the epitaxy of ZnSe-based quantum structures on (001) GaAs, we find that the fabrication of quantum well structures on (110) GaAs requires significantly different growth conditions and sample architecture. We use magnetotransport measurements to confirm the formation of a two-dimensional electron gas in these samples, and then measure transverse electron spin relaxation times using time-resolved Faraday rotation. In contrast to expectations based upon known spin relaxation mechanisms, we find surprisingly little difference between the spin lifetimes in these (110)-oriented samples in comparison with (100)-oriented control samples.

Original languageEnglish (US)
Pages (from-to)185-188
Number of pages4
JournalJournal of Superconductivity and Novel Magnetism
Volume18
Issue number2
DOIs
StatePublished - Dec 1 2005

Fingerprint

Semiconductor quantum wells
Modulation
quantum wells
modulation
Galvanomagnetic effects
Fabrication
Faraday effect
fabrication
Two dimensional electron gas
Epitaxial growth
Relaxation time
Electrons
Substrates
electron spin
epitaxy
electron gas
relaxation time
life (durability)
gallium arsenide

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Ku, K. C. ; Chun, S. H. ; Wang, W. H. ; Fadgen, W. ; Issadore, D. A. ; Samarth, N. ; Epstein, R. J. ; Awschalom, D. D. / Fabrication and characterization of modulation-doped ZnSe/(Zn,Cd)Se (110) quantum wells : A new system for spin coherence studies. In: Journal of Superconductivity and Novel Magnetism. 2005 ; Vol. 18, No. 2. pp. 185-188.
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Fabrication and characterization of modulation-doped ZnSe/(Zn,Cd)Se (110) quantum wells : A new system for spin coherence studies. / Ku, K. C.; Chun, S. H.; Wang, W. H.; Fadgen, W.; Issadore, D. A.; Samarth, N.; Epstein, R. J.; Awschalom, D. D.

In: Journal of Superconductivity and Novel Magnetism, Vol. 18, No. 2, 01.12.2005, p. 185-188.

Research output: Contribution to journalArticle

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T1 - Fabrication and characterization of modulation-doped ZnSe/(Zn,Cd)Se (110) quantum wells

T2 - A new system for spin coherence studies

AU - Ku, K. C.

AU - Chun, S. H.

AU - Wang, W. H.

AU - Fadgen, W.

AU - Issadore, D. A.

AU - Samarth, N.

AU - Epstein, R. J.

AU - Awschalom, D. D.

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