Memory effects in femtosecond collective spin rotation in ferromagnetic semiconductors

J. Wang; I. Cotoros; D. S. Chemla; X. Liu; J. K. Furdyna; J. Chovan; I. E. Perakis

doi:10.1117/12.809945

6 February 2009 Memory effects in femtosecond collective spin rotation in ferromagnetic semiconductors

J. Wang, I. Cotoros, D. S. Chemla, X. Liu, J. K. Furdyna, J. Chovan, I. E. Perakis

Proceedings Volume 7214, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XIII; 721412 (2009) https://doi.org/10.1117/12.809945
Event: SPIE OPTO: Integrated Optoelectronic Devices, 2009, San Jose, California, United States

Abstract

We report a femtosecond response in photoinduced magnetization rotation in the ferromagnetic semiconductor GaMnAs, which allows for detection of a four-state magnetic memory at the femtosecond time scale. The temporal profile of this cooperative magnetization rotation exhibits a discontinuity that reveals two distinct temporal regimes, marked by the transition from a highly non-equilibrium, carrier-mediated regime within the first 200 fs, to a thermal, lattice-heating picosecond regime.

Citation Download Citation

J. Wang, I. Cotoros, D. S. Chemla, X. Liu, J. K. Furdyna, J. Chovan, and I. E. Perakis "Memory effects in femtosecond collective spin rotation in ferromagnetic semiconductors", Proc. SPIE 7214, Ultrafast Phenomena in Semiconductors and Nanostructure Materials XIII, 721412 (6 February 2009); https://doi.org/10.1117/12.809945

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available