TY - JOUR
T1 - Persistent spin current in mesoscopic ferrimagnetic spin ring
AU - Wu, Jing Nuo
AU - Chang, Ming Che
AU - Yang, Min Fong
PY - 2005/11/1
Y1 - 2005/11/1
N2 - Using a semiclassical approach, we study the persistent magnetization current of a mesoscopic ferrimagnetic ring in a nonuniform magnetic field. At zero temperature, there exists persistent spin current because of the quantum fluctuation of magnons, similar to the case of an antiferromagnetic spin ring. At a low temperature, the current shows activation behavior because of the field-induced gap. At a higher temperature, the magnitude of the spin current is proportional to temperature T, similar to the reported result of a ferromagnetic spin ring.
AB - Using a semiclassical approach, we study the persistent magnetization current of a mesoscopic ferrimagnetic ring in a nonuniform magnetic field. At zero temperature, there exists persistent spin current because of the quantum fluctuation of magnons, similar to the case of an antiferromagnetic spin ring. At a low temperature, the current shows activation behavior because of the field-induced gap. At a higher temperature, the magnitude of the spin current is proportional to temperature T, similar to the reported result of a ferromagnetic spin ring.
UR - https://www.scopus.com/pages/publications/29544447602
U2 - 10.1103/PhysRevB.72.172405
DO - 10.1103/PhysRevB.72.172405
M3 - 文章
AN - SCOPUS:29544447602
SN - 1098-0121
VL - 72
JO - Physical Review B - Condensed Matter and Materials Physics
JF - Physical Review B - Condensed Matter and Materials Physics
IS - 17
M1 - 172405
ER -