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Electrical control of spin dynamics in finite one-dimensional systems
School of Physics and CRANN, Trinity College, Dublin 2, Ireland.ORCID iD: 0000-0002-7831-7214
School of Physics and CRANN, Trinity College, Dublin 2, Ireland.
School of Physics and CRANN, Trinity College, Dublin 2, Ireland.
2011 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 84, p. 155436-Article in journal (Refereed) Published
Abstract [en]

We investigate the possibility of the electrical control of spin transfer in monoatomic chains incorporating spin impurities. Our theoretical framework is the mixed quantum-classical (Ehrenfest) description of the spin dynamics, in the spirit of thes-d model, where the itinerant electrons are described by a tight-binding model while localized spins are treated classically. Our main focus is on the dynamical exchange interaction between two well-separated spins. This can be quantified by the transfer of excitations in the form of transverse spin oscillations. We systematically study the effect of an electrostatic gate bias Vg on the interconnecting channel and we map out the long-range dynamical spin transfer as a function of Vg. We identify regions of Vg giving rise to significant amplification of the spin transmission at low frequencies and relate this to the electronic structure of the channel.

Place, publisher, year, edition, pages
American Physical Society , 2011. Vol. 84, p. 155436-
National Category
Physical Sciences
Research subject
Physics, Condensed Matter Physics
Identifiers
URN: urn:nbn:se:lnu:diva-30159DOI: 10.1103/PhysRevB.84.155436OAI: oai:DiVA.org:lnu-30159DiVA, id: diva2:662253
Available from: 2013-11-06 Created: 2013-11-06 Last updated: 2017-12-06Bibliographically approved

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Publisher's full texthttp://prb.aps.org/abstract/PRB/v84/i15/e155436

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Pertsova, Anna

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