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4 papers · 2 filters
Spin Ice, Fractionalization and Topological Order
C. Castelnovo, R. Moessner, S. L. Sondhi
The spin ice compounds {\dys} and {\holm} are highly unusual magnets which epitomize a set of concepts of great interest in modern condensed matter physics: their low-energy physic…
A field trip through spin ice
G. Sala, C. Castelnovo, R. Moessner +5
Fractionalisation -- the breaking up of an apparently indivisible microscopic degree of freedom -- is one of the most counterintuitive phenomena in many-body physics. Here we study…
Topological Quantum Glassiness
Claudio Castelnovo, Claudio Chamon
Quantum tunneling often allows pathways to relaxation past energy barriers which are otherwise hard to overcome classically at low temperatures. However, this is not always the cas…
Debye-Hückel theory for spin ice at low temperature
Claudio Castelnovo, Roderich Moessner, Shivaji Sondhi
At low temperatures, spin ice is populated by a finite density of magnetic monopoles-pointlike topological defects with a mutual magnetic Coulomb interaction. We discuss the proper…