Ferromagnetic resonance in Ga1-xMnxAs

S. T.B. Goennenwein; T. Graf; T. Wassner; M. S. Brandt; M. Stutzmann; A. Koeder; S. Frank; W. Schoch; A. Waag

Ferromagnetic resonance in Ga_1-xMn_xAs

S. T.B. Goennenwein
, T. Graf
, T. Wassner
, M. S. Brandt
, M. Stutzmann
, A. Koeder
, S. Frank
, W. Schoch
, A. Waag

TUM Emeriti of Excellence

Walter Schottky Institut
University of Ulm

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

7 Scopus citations

Abstract

We report on ferromagnetic resonance measurements of Ga _1-xMn_xAs thin films with Mn contents 0.022 ≤ x ≤ 0.051. For x ≥ 0.036 and the external magnetic field normal to the thin film, we observe several resonances, which we identify as spin wave resonances. The non-quadratic mode spacing can be consistently explained by a linear gradient in the magnetic properties of the films. From the measurements, the exchange constant A can be deduced for different Mn contents x.

Original language	English
Pages (from-to)	75-78
Number of pages	4
Journal	Journal of Superconductivity and Novel Magnetism
Volume	16
Issue number	1
State	Published - 2003

Keywords

Dilute magnetic semiconductor
Exchange constant
Ferromagnetic resonance
GaMnAs
Spin waves

Cite this

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title = "Ferromagnetic resonance in Ga1-xMnxAs",

abstract = "We report on ferromagnetic resonance measurements of Ga 1-xMnxAs thin films with Mn contents 0.022 ≤ x ≤ 0.051. For x ≥ 0.036 and the external magnetic field normal to the thin film, we observe several resonances, which we identify as spin wave resonances. The non-quadratic mode spacing can be consistently explained by a linear gradient in the magnetic properties of the films. From the measurements, the exchange constant A can be deduced for different Mn contents x.",

keywords = "Dilute magnetic semiconductor, Exchange constant, Ferromagnetic resonance, GaMnAs, Spin waves",

author = "Goennenwein, \{S. T.B.\} and T. Graf and T. Wassner and Brandt, \{M. S.\} and M. Stutzmann and A. Koeder and S. Frank and W. Schoch and A. Waag",

year = "2003",

language = "English",

volume = "16",

pages = "75--78",

journal = "Journal of Superconductivity and Novel Magnetism",

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TY - JOUR

T1 - Ferromagnetic resonance in Ga1-xMnxAs

AU - Goennenwein, S. T.B.

AU - Graf, T.

AU - Wassner, T.

AU - Brandt, M. S.

AU - Stutzmann, M.

AU - Koeder, A.

AU - Frank, S.

AU - Schoch, W.

AU - Waag, A.

PY - 2003

Y1 - 2003

N2 - We report on ferromagnetic resonance measurements of Ga 1-xMnxAs thin films with Mn contents 0.022 ≤ x ≤ 0.051. For x ≥ 0.036 and the external magnetic field normal to the thin film, we observe several resonances, which we identify as spin wave resonances. The non-quadratic mode spacing can be consistently explained by a linear gradient in the magnetic properties of the films. From the measurements, the exchange constant A can be deduced for different Mn contents x.

AB - We report on ferromagnetic resonance measurements of Ga 1-xMnxAs thin films with Mn contents 0.022 ≤ x ≤ 0.051. For x ≥ 0.036 and the external magnetic field normal to the thin film, we observe several resonances, which we identify as spin wave resonances. The non-quadratic mode spacing can be consistently explained by a linear gradient in the magnetic properties of the films. From the measurements, the exchange constant A can be deduced for different Mn contents x.

KW - Dilute magnetic semiconductor

KW - Exchange constant

KW - Ferromagnetic resonance

KW - GaMnAs

KW - Spin waves

UR - https://www.scopus.com/pages/publications/3543091554

M3 - Article

AN - SCOPUS:3543091554

SN - 1557-1939

VL - 16

SP - 75

EP - 78

JO - Journal of Superconductivity and Novel Magnetism

JF - Journal of Superconductivity and Novel Magnetism

IS - 1

ER -

Ferromagnetic resonance in Ga_1-xMn_xAs

Abstract

Keywords

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