Spin transport in an Aharonov-Bohm ring with exchange interaction

TY - JOUR

T1 - Spin transport in an Aharonov-Bohm ring with exchange interaction

AU - Savenko, I. G.

AU - Polozkov, R. G.

AU - Shelykh, I. A.

PY - 2013/11/25

Y1 - 2013/11/25

N2 - We investigate spin-dependent conductance through a quantum Aharonov-Bohm ring containing localized electrons which interact with the propagating flow of electrons via exchange interaction of the ferromagnetic or antiferromagnetic type. We analyze the conductance oscillations as a function of both the chemical potential (particle concentration) and external magnetic field. It is demonstrated that the amplitude of the conductance oscillations in the ballistic regime is determined by the value of the noncompensated spin localized in the ring. The results are in agreement with the concept of fractional quantization of the ballistic conductance, proposed by us earlier.

AB - We investigate spin-dependent conductance through a quantum Aharonov-Bohm ring containing localized electrons which interact with the propagating flow of electrons via exchange interaction of the ferromagnetic or antiferromagnetic type. We analyze the conductance oscillations as a function of both the chemical potential (particle concentration) and external magnetic field. It is demonstrated that the amplitude of the conductance oscillations in the ballistic regime is determined by the value of the noncompensated spin localized in the ring. The results are in agreement with the concept of fractional quantization of the ballistic conductance, proposed by us earlier.

UR - http://www.scopus.com/inward/record.url?scp=84888315311&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.88.195430

DO - 10.1103/PhysRevB.88.195430

M3 - 文章

AN - SCOPUS:84888315311

SN - 1098-0121

VL - 88

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 19

M1 - 195430

ER -