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Title: Macroscopic spin-orbit coupling in non-uniform magnetic fields

Translational dynamics of aggregated magnetic nano-particles placed in a rotating external magnetic field is described. It is observed and explained that aggregates that spin within a radially decreasing field strength must execute an orbital motion of their center of mass in a sense that counters their spin rotation. This orbital motion is tightly coupled to the spin dynamics of the aggregates. An analytical model for the canonical variables describing the orbital motion is derived and shown to be in good agreement with the measured values.
Authors:
; ;  [1] ;  [2]
  1. Semaphore Scientific, Inc., St. Cloud, Minnesota 56301 (United States)
  2. Department of Electrical and Computer Engineering, St. Cloud State University, St. Cloud, Minnesota 56301 (United States)
Publication Date:
OSTI Identifier:
22412759
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 106; Journal Issue: 9; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; L-S COUPLING; MAGNETIC FIELDS; MASS; NANOPARTICLES; ROTATION; SPIN