PIANET, Vivien; URDAMPILLETA, Matias; COLIN, Thierry; CLÉRAC, Rodolphe; COULON, Claude

doi:10.1103/PhysRevB.94.054431

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PIANET, Vivien
Université de Bordeaux [UB]
Centre de Recherche Paul Pascal [CRPP]
Institut de Mathématiques de Bordeaux [IMB]

URDAMPILLETA, Matias
Université de Bordeaux [UB]
Centre de Recherche Paul Pascal [CRPP]

COLIN, Thierry
Université de Bordeaux [UB]
Institut de Mathématiques de Bordeaux [IMB]

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Physical Review B: Condensed Matter and Materials Physics (1998-2015). 2016-08-30, vol. 94, n° 054431, p. 1-7

American Physical Society

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Bistability in magnetism is extensively used, in particular for information storage. Here an alternative approach using tetrastable magnetic domains in one-dimensional (1D) spin systems is presented. Using numerical and analytical calculations, we show that a spin chain with a canting angle of π/4 possesses four energy-equivalent states. We discuss the static properties of this canted 1D system such as the profile and the energy of the domain walls as they govern the dynamics of themagnetization. The realization of this π/4 canted spin chain could enable the encoding of the information on four bits, which is a potential alternative toward the increase of storage density.< Leer menos

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Magnetic tetrastability in a spin chain

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