TY - JOUR
T1 - Topological transitions in spin interferometers
AU - Saarikoski, Henri
AU - Vázquez-Lozano, J. Enrique
AU - Baltanás, José Pablo
AU - Nagasawa, Fumiya
AU - Nitta, Junsaku
AU - Frustaglia, Diego
N1 - Publisher Copyright:
© 2015 American Physical Society.
PY - 2015/6/19
Y1 - 2015/6/19
N2 - 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.
AB - 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.
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U2 - 10.1103/PhysRevB.91.241406
DO - 10.1103/PhysRevB.91.241406
M3 - Article
AN - SCOPUS:84935417146
VL - 91
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
SN - 0163-1829
IS - 24
M1 - 241406
ER -