Hysteretic spin-density-wave ordering in confined geometries

Eric E. Fullerton; J. L. Robertson; A. R.E. Prinsloo; H. L. Alberts; S. D. Bader

doi:10.1103/PhysRevLett.91.237201

Hysteretic spin-density-wave ordering in confined geometries

Eric E. Fullerton, J. L. Robertson, A. R.E. Prinsloo, H. L. Alberts, S. D. Bader

Physics

Research output: Contribution to journal › Article › peer-review

27 Citations (Scopus)

Abstract

We have measured the antiferromagnetic spin-density-wave (SDW) order in [Formula presented] superlattices. The Mn doping creates a high Néel temperature layer that confines the incommensurate SDW order within the Cr layers. With temperature cycling we observe a transition from commensurate to incommensurate SDW order and discrete changes in the SDW period. We find that these transitions show significant hysteresis (up to 75 K) when the number of SDW nodes within the Cr layer changes by an odd number, while there is no hysteresis for changes of an even number of nodes. This results from the competition between maintaining the spin structure at the interfaces and introducing a spin slip at the nodes of the Cr SDW.

Original language	English
Journal	Physical Review Letters
Volume	91
Issue number	23
DOIs	https://doi.org/10.1103/PhysRevLett.91.237201
Publication status	Published - 2003

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.91.237201

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abstract = "We have measured the antiferromagnetic spin-density-wave (SDW) order in [Formula presented] superlattices. The Mn doping creates a high N{\'e}el temperature layer that confines the incommensurate SDW order within the Cr layers. With temperature cycling we observe a transition from commensurate to incommensurate SDW order and discrete changes in the SDW period. We find that these transitions show significant hysteresis (up to 75 K) when the number of SDW nodes within the Cr layer changes by an odd number, while there is no hysteresis for changes of an even number of nodes. This results from the competition between maintaining the spin structure at the interfaces and introducing a spin slip at the nodes of the Cr SDW.",

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AU - Robertson, J. L.

AU - Prinsloo, A. R.E.

AU - Alberts, H. L.

AU - Bader, S. D.

PY - 2003

Y1 - 2003

N2 - We have measured the antiferromagnetic spin-density-wave (SDW) order in [Formula presented] superlattices. The Mn doping creates a high Néel temperature layer that confines the incommensurate SDW order within the Cr layers. With temperature cycling we observe a transition from commensurate to incommensurate SDW order and discrete changes in the SDW period. We find that these transitions show significant hysteresis (up to 75 K) when the number of SDW nodes within the Cr layer changes by an odd number, while there is no hysteresis for changes of an even number of nodes. This results from the competition between maintaining the spin structure at the interfaces and introducing a spin slip at the nodes of the Cr SDW.

AB - We have measured the antiferromagnetic spin-density-wave (SDW) order in [Formula presented] superlattices. The Mn doping creates a high Néel temperature layer that confines the incommensurate SDW order within the Cr layers. With temperature cycling we observe a transition from commensurate to incommensurate SDW order and discrete changes in the SDW period. We find that these transitions show significant hysteresis (up to 75 K) when the number of SDW nodes within the Cr layer changes by an odd number, while there is no hysteresis for changes of an even number of nodes. This results from the competition between maintaining the spin structure at the interfaces and introducing a spin slip at the nodes of the Cr SDW.

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Hysteretic spin-density-wave ordering in confined geometries

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