Magnetic nano-skyrmions develop quantized helicity excitations, and the quantum tunneling
between nano-skyrmions possessing distinct helicities is indicative of the quantum nature of …

Magnetization and magnetic relaxation measurements of 200Å size Co3O4 particles are
reported. Zero-field-cooled (ZFC) susceptibility exhibits a sharp peak characterizing a phase …

We herein present the preparation, crystal structure, magnetic properties, and theoretical
study of new heterobimetallic chains of formula {[FeIII (bpym)(CN4)] 2MII (H2O) 2}⊙ 6H2O …

Reviewing macroscopic quantum phenomena and quantum dissipation, from the
phenomenology of magnetism and superconductivity to the presentation of alternative …

A striking prediction in topological insulators is the appearance of the quantized Hall
resistance when the surface states are magnetized. The surface Dirac states become …

At temperatures below the magnetic anisotropy energy, monodomain magnetic systems
(small particles, nanomagnetic devices, etc.) must relax quantum mechanically-thermal …

抄録 The macroscopic quantum tunneling of a planar domain wall in a ferromagnetic metal
is studied based on the Hubbard model. An effective action of the magnetization for the …

The field sweep rate (v= d H/dt) and temperature (T) dependence of the magnetization
reversal of a single-chain magnet is studied at low temperatures. As expected for a thermally …

We present a comprehensive study of the low-temperature magnetic relaxation in random
magnets. The first part of the paper contains theoretical analysis of the expected features of …

The dynamics of a magnetic moment or spin are of high interest to applications in
technology. Dissipation in these systems is therefore of importance for improvement of …