Spin ice (nonfiction): Difference between revisions

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File:Gnotilus-fighting-Heracles.jpg|link=Gnotilus|[[Gnotilus]] has an unlucky habit of slipping and falling on spin ice.
File:Gnotilus-fighting-Heracles.jpg|link=Gnotilus|[[Gnotilus]] has an unlucky habit of slipping and falling on spin ice.
Brion_Gysin.jpg|link=Scrying engine|Brion Gysion uses newly-discovered [[scrying engine]] to preview [[Gnotilus]] slipping on spin ice.
Brion_Gysin.jpg|Brion Gysion uses newly-discovered [[scrying engine]] to preview [[Gnotilus]] slipping on spin ice.
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Revision as of 12:54, 12 June 2016

The arrangement of spins (black arrows) in a spin ice.

A spin ice is a substance that does not have a single minimal-energy state.

Description o

It has "spin" degrees of freedom, i.e., it is a magnet, with frustrated interactions that prevent it from completely freezing.

Spin ices show low-temperature properties, residual entropy in particular, closely related to those of crystalline water ice.

The most prominent compounds with such properties are dysprosium titanate (nonfiction) and holmium titanate.

The magnetic ordering of a spin ice resembles the positional ordering of hydrogen atoms in conventional water ice.

Recent experiments have found evidence for the existence of deconfined magnetic monopoles in these materials, with analogous properties to the hypothetical magnetic monopoles postulated to exist in the vacuum.

Nonfiction cross-reference

Fiction cross-reference

External links