Spin flip conductance of quantum nanocontacts

Artur Useinov, N. Kh Useinov, L. R. Tagirov

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

The theory of nanosize point contacts made of ferromagnetic metals is developed. A general quantum scattering theory is applied to calculate conductance of the nanocontact with domain wall located in the constriction. Exact solution of the electron motion in the potential of the linear domain wall is used as a zero-order approximation. Spin-conserving and spin-flip conductivities are calculated by perturbation theory up to the second order in difference between the model and actual potentials of the domain wall. The spin-flip conductivity imposes natural limitation on magnetoresistance of a point contact, which otherwise diverges in the regime of quantized conductance through the contact.

Original languageEnglish
Title of host publicationPhysics, Chemistry, and Application of Nanostructures
Subtitle of host publicationReviews and Short Notes to Nanomeeting 2005: Minsk, Belarus, 24-27 May 2005
PublisherWorld Scientific Publishing Co.
Pages276-279
Number of pages4
ISBN (Electronic)9789812701947
ISBN (Print)9812562885, 9789812562883
DOIs
StatePublished - 1 Jan 2005
EventInternational Conference on Physics, Chemistry and Applications of Nanostructures Physics, NANOMEETING 2005 - Minsk, Belarus
Duration: 24 May 200527 May 2005

Publication series

NamePhysics, Chemistry and Application of Nanostructures - Reviews and Short Notes to NANOMEETING 2005

Conference

ConferenceInternational Conference on Physics, Chemistry and Applications of Nanostructures Physics, NANOMEETING 2005
CountryBelarus
CityMinsk
Period24/05/0527/05/05

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    Useinov, A., Useinov, N. K., & Tagirov, L. R. (2005). Spin flip conductance of quantum nanocontacts. In Physics, Chemistry, and Application of Nanostructures: Reviews and Short Notes to Nanomeeting 2005: Minsk, Belarus, 24-27 May 2005 (pp. 276-279). (Physics, Chemistry and Application of Nanostructures - Reviews and Short Notes to NANOMEETING 2005). World Scientific Publishing Co.. https://doi.org/10.1142/9789812701947_0060