Topological transitions in spin interferometers

Henri Saarikoski, J. Enrique Vázquez-Lozano, José Pablo Baltanás, Fumiya Nagasawa, Junsaku Nitta, Diego Frustaglia

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

We show that topological transitions in electronic spin transport are feasible by a controlled manipulation of spin-guiding fields. The transitions are determined by the topology of the fields texture through an effective Berry phase (related to the winding parity of spin modes around poles in the Bloch sphere), irrespective of the actual complexity of the nonadiabatic spin dynamics. This manifests as a distinct dislocation of the interference pattern in the quantum conductance of mesoscopic loops. The phenomenon is robust against disorder, and can be experimentally exploited to determine the magnitude of inner spin-orbit fields.

Original languageEnglish
Article number241406
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume91
Issue number24
DOIs
Publication statusPublished - 2015 Jun 19

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Topological transitions in spin interferometers'. Together they form a unique fingerprint.

  • Cite this

    Saarikoski, H., Vázquez-Lozano, J. E., Baltanás, J. P., Nagasawa, F., Nitta, J., & Frustaglia, D. (2015). Topological transitions in spin interferometers. Physical Review B - Condensed Matter and Materials Physics, 91(24), [241406]. https://doi.org/10.1103/PhysRevB.91.241406