Magnetic order in semiconducting, ferromagnetic Ga1-xMnxAs

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Magnetic order in semiconducting, ferromagnetic Ga1-xMnxAs. / Fedorych, OM; Wilamowski, Z; Potemski, M; Byszewski, M; Sadowski, Janusz.

In: Semiconductor Science and Technology, Vol. 19, No. 4, 2004, p. S492-S493.

Research output: Contribution to journalArticle

Harvard

Fedorych, OM, Wilamowski, Z, Potemski, M, Byszewski, M & Sadowski, J 2004, 'Magnetic order in semiconducting, ferromagnetic Ga1-xMnxAs', Semiconductor Science and Technology, vol. 19, no. 4, pp. S492-S493. https://doi.org/10.1088/0268-1242/19/4/162

APA

Fedorych, OM., Wilamowski, Z., Potemski, M., Byszewski, M., & Sadowski, J. (2004). Magnetic order in semiconducting, ferromagnetic Ga1-xMnxAs. Semiconductor Science and Technology, 19(4), S492-S493. https://doi.org/10.1088/0268-1242/19/4/162

CBE

Fedorych OM, Wilamowski Z, Potemski M, Byszewski M, Sadowski J. 2004. Magnetic order in semiconducting, ferromagnetic Ga1-xMnxAs. Semiconductor Science and Technology. 19(4):S492-S493. https://doi.org/10.1088/0268-1242/19/4/162

MLA

Vancouver

Author

Fedorych, OM ; Wilamowski, Z ; Potemski, M ; Byszewski, M ; Sadowski, Janusz. / Magnetic order in semiconducting, ferromagnetic Ga1-xMnxAs. In: Semiconductor Science and Technology. 2004 ; Vol. 19, No. 4. pp. S492-S493.

RIS

TY - JOUR

T1 - Magnetic order in semiconducting, ferromagnetic Ga1-xMnxAs

AU - Fedorych, OM

AU - Wilamowski, Z

AU - Potemski, M

AU - Byszewski, M

AU - Sadowski, Janusz

PY - 2004

Y1 - 2004

N2 - Magnetic resonance studies allow us to distinguish paramagnetic, ferromagnetic and ferrimagnetic phases in Ga1-xMnxAs. The transition from ferromagnet to ferrimagnet is correlated with a metal to insulator transition. The analysis of spin wave resonance spectra, which occur in the ferrimagnetic phase, allows us to estimate the magnitude and the distance dependence of exchange coupling. The experimentally evaluated long range of exchange causes an effective averaging of the fluctuation of exchange interactions. As a consequence, in the semimetallic phase both spin subsystems coherently precess forming the ferrimagnetic structure. In the insulating phase, fluctuations of the local exchange field lead to a fast decoherence of the carrier spins and only the localized Mn spins form the ferromagnetic moment.

AB - Magnetic resonance studies allow us to distinguish paramagnetic, ferromagnetic and ferrimagnetic phases in Ga1-xMnxAs. The transition from ferromagnet to ferrimagnet is correlated with a metal to insulator transition. The analysis of spin wave resonance spectra, which occur in the ferrimagnetic phase, allows us to estimate the magnitude and the distance dependence of exchange coupling. The experimentally evaluated long range of exchange causes an effective averaging of the fluctuation of exchange interactions. As a consequence, in the semimetallic phase both spin subsystems coherently precess forming the ferrimagnetic structure. In the insulating phase, fluctuations of the local exchange field lead to a fast decoherence of the carrier spins and only the localized Mn spins form the ferromagnetic moment.

U2 - 10.1088/0268-1242/19/4/162

DO - 10.1088/0268-1242/19/4/162

M3 - Article

VL - 19

SP - S492-S493

JO - Semiconductor Science and Technology

JF - Semiconductor Science and Technology

SN - 0268-1242

IS - 4

ER -