Optical studies of spin precession in magnetic two-dimensional electron gases

J. M. Kikkawa; I. P. Smorchkova; N. Samarth; D. D. Awschalom

doi:10.1016/S1386-9477(98)00081-2

Optical studies of spin precession in magnetic two-dimensional electron gases

J. M. Kikkawa, I. P. Smorchkova, N. Samarth, D. D. Awschalom

Research output: Contribution to journal › Article › peer-review

12 Scopus citations

Abstract

Magnetic two-dimensional electron gases are studied using time-resolved Kerr and Faraday rotation spectroscopy in the Voigt geometry. The data directly reveal both electron and Mn spin precession in modest transverse fields. Scattering by Mn ions dominates the electron spin relaxation processes in these materials, and prevents the electron gas from acquiring a long-lived spin polarization as observed in non-magnetic structures. Nonetheless, a persistent Mn spin polarization occurs which creates a oscillating magnetic field within the electron gas for hundreds of picoseconds.

Original language	English (US)
Pages (from-to)	394-398
Number of pages	5
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	2
Issue number	1-4
DOIs	https://doi.org/10.1016/S1386-9477(98)00081-2
State	Published - Jul 15 1998

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1016/S1386-9477(98)00081-2

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title = "Optical studies of spin precession in magnetic two-dimensional electron gases",

abstract = "Magnetic two-dimensional electron gases are studied using time-resolved Kerr and Faraday rotation spectroscopy in the Voigt geometry. The data directly reveal both electron and Mn spin precession in modest transverse fields. Scattering by Mn ions dominates the electron spin relaxation processes in these materials, and prevents the electron gas from acquiring a long-lived spin polarization as observed in non-magnetic structures. Nonetheless, a persistent Mn spin polarization occurs which creates a oscillating magnetic field within the electron gas for hundreds of picoseconds.",

author = "Kikkawa, {J. M.} and Smorchkova, {I. P.} and N. Samarth and Awschalom, {D. D.}",

note = "Funding Information: This work was supported by grants ONR N00014-94-1-0297 and -0225, and NSF DMR 92-07567, 95-00460 and STC DMR 91-20007.",

year = "1998",

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doi = "10.1016/S1386-9477(98)00081-2",

language = "English (US)",

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TY - JOUR

T1 - Optical studies of spin precession in magnetic two-dimensional electron gases

AU - Kikkawa, J. M.

AU - Smorchkova, I. P.

AU - Samarth, N.

AU - Awschalom, D. D.

N1 - Funding Information: This work was supported by grants ONR N00014-94-1-0297 and -0225, and NSF DMR 92-07567, 95-00460 and STC DMR 91-20007.

PY - 1998/7/15

Y1 - 1998/7/15

N2 - Magnetic two-dimensional electron gases are studied using time-resolved Kerr and Faraday rotation spectroscopy in the Voigt geometry. The data directly reveal both electron and Mn spin precession in modest transverse fields. Scattering by Mn ions dominates the electron spin relaxation processes in these materials, and prevents the electron gas from acquiring a long-lived spin polarization as observed in non-magnetic structures. Nonetheless, a persistent Mn spin polarization occurs which creates a oscillating magnetic field within the electron gas for hundreds of picoseconds.

AB - Magnetic two-dimensional electron gases are studied using time-resolved Kerr and Faraday rotation spectroscopy in the Voigt geometry. The data directly reveal both electron and Mn spin precession in modest transverse fields. Scattering by Mn ions dominates the electron spin relaxation processes in these materials, and prevents the electron gas from acquiring a long-lived spin polarization as observed in non-magnetic structures. Nonetheless, a persistent Mn spin polarization occurs which creates a oscillating magnetic field within the electron gas for hundreds of picoseconds.

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JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 1-4

ER -

Optical studies of spin precession in magnetic two-dimensional electron gases

Abstract

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