Laser-induced spin dynamics in ferromagnetic (In,Mn)As at magnetic fields up to 7 T

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Laser-induced spin dynamics in ferromagnetic (In,Mn)As at magnetic fields up to 7 T

R. R. Subkhangulov, H. Munekata, Th. Rasing, and A. V. Kimel

Phys. Rev. B 89, 060402(R) – Published 10 February 2014

Abstract

Laser-induced spin dynamics in (In,Mn)As is studied in magnetic fields up to 7 T. It is shown that a laser pulse can effectively excite homogenous spin precession in this compound at the frequency of the ferromagnetic resonance. Laser excitation of this resonance appears to be very ineffective if the applied magnetic field is below 1.5 T at 10 K. Our analysis shows that the damping of the laser-induced spin precession is a function of magnetic field and reaches very high values below 1.5 T.

Received 25 September 2013

DOI:https://doi.org/10.1103/PhysRevB.89.060402

Authors & Affiliations

R. R. Subkhangulov¹, H. Munekata², Th. Rasing¹, and A. V. Kimel¹

¹Radboud University Nijmegen, Institute for Molecules and Materials (IMM), Heyendaalseweg 135, 6525 AJ Nijmegen, The Netherlands
²Imaging Science and Engineering Laboratory, Tokyo Institute of Technology, Yokohama, Kanagawa, Japan

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Issue

Vol. 89, Iss. 6 — 1 February 2014

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Physical Review B

covering condensed matter and materials physics