Size distribution of magnetic charge domains in thermally activated but out-of-equilibrium artificial spin ice.

Abstract:

:A crystal of emerging magnetic charges is expected in the phase diagram of the dipolar kagomé spin ice. An observation of charge crystallites in thermally demagnetized artificial spin ice arrays has been recently reported by S. Zhang and coworkers and explained through the thermodynamics of the system as it approaches a charge-ordered state. Following a similar approach, we have generated a partial order of magnetic charges in an artificial kagomé spin ice lattice made out of ferrimagnetic material having a Curie temperature of 475 K. A statistical study of the size of the charge domains reveals an unconventional sawtooth distribution. This distribution is in disagreement with the predictions of the thermodynamic model and is shown to be a signature of the kinetic process governing the remagnetization.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Montaigne F,Lacour D,Chioar IA,Rougemaille N,Louis D,Mc Murtry S,Riahi H,Burgos BS,Menteş TO,Locatelli A,Canals B,Hehn M

doi

10.1038/srep05702

subject

Has Abstract

pub_date

2014-07-16 00:00:00

pages

5702

issn

2045-2322

pii

srep05702

journal_volume

4

pub_type

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