Model for spin waves and lasing in monolayer graphene films

Vladimir L. Derbov; Dmitry D Grachev; Leonid A. Sevastyanov; Konstantin P. Lovetskiy; Sergey I. Vinitsky; Alexander A. Gusev

doi:10.1117/12.2178360

19 March 2015 Model for spin waves and lasing in monolayer graphene films

Vladimir L. Derbov, Dmitry D Grachev, Leonid A. Sevastyanov, Konstantin P. Lovetskiy, Sergey I. Vinitsky, Alexander A. Gusev

Author Affiliations +

Proceedings Volume 9448, Saratov Fall Meeting 2014: Optical Technologies in Biophysics and Medicine XVI; Laser Physics and Photonics XVI; and Computational Biophysics; 94481W (2015) https://doi.org/10.1117/12.2178360
Event: Saratov Fall Meeting 2014, 2014, Saratov, Russian Federation

Abstract

Basing on Dirac equation for interacting massless fermions, we propose a nonlinear model that describes a possible mechanism of ferromagnetism in graphene structures, resulting from electron-electron interaction and spontaneous breaking of spin symmetry of valence electrons. Qualitative predictions of the model are important for practical applications in spintronics. Localized kink-antikink patterns of valence electron spin density on the graphene surface are calculated, their interaction is described, and, finally, the formation of their quasi-bound metastable states (breathers) is investigated. The spectrum of breathers is calculated in both the analytical and the numerical form. Once created, the inverted population of the appropriate states may be used to generate quantum coherent nonlinear spin waves that can find practical applications in nanoelectronics and spintronics. Optical excitation and possible lasing transitions between the breather discrete states are discussed.

Citation Download Citation

Vladimir L. Derbov, Dmitry D Grachev, Leonid A. Sevastyanov, Konstantin P. Lovetskiy, Sergey I. Vinitsky, and Alexander A. Gusev "Model for spin waves and lasing in monolayer graphene films", Proc. SPIE 9448, Saratov Fall Meeting 2014: Optical Technologies in Biophysics and Medicine XVI; Laser Physics and Photonics XVI; and Computational Biophysics, 94481W (19 March 2015); https://doi.org/10.1117/12.2178360

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