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Persistent current and Hall effect due to spin chirality
Author(s) -
Tatara G.
Publication year - 2004
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200304414
Subject(s) - spin hall effect , condensed matter physics , chirality (physics) , spin (aerodynamics) , physics , ferromagnetism , quantum spin hall effect , current (fluid) , magnetization , quantum hall effect , hall effect , quantum mechanics , electron , magnetic field , spin polarization , chiral anomaly , quantum chromodynamics , nambu–jona lasinio model , thermodynamics
We show that a spontaneous electric current is induced in a nano‐scale conducting ring just by putting three ferromagnets (spin Josephson effect). The current is a direct consequence of the non‐commutativity of the spin algebra, and is proportional to the non‐coplanarity (chirality) of the magnetization vectors. This persistent current is shown to results in anomalus Hall effect in frustrated magnets. The application to a novel quantum logic gate is discussed. (© 2004 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)