Field-Induced Commensurate-Incommensurate Phase Transition in a Dzyaloshinskii-Moriya Spiral Antiferromagnet

A. Zheludev; S. Maslov; G. Shirane; Y. Sasago; N. Koide; K. Uchinokura

doi:10.1103/PhysRevLett.78.4857

Field-Induced Commensurate-Incommensurate Phase Transition in a Dzyaloshinskii-Moriya Spiral Antiferromagnet

A. Zheludev, S. Maslov, G. Shirane, Y. Sasago, N. Koide, K. Uchinokura

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

Abstract

We report an observation of a commensurate-incommensurate phase transition in a Dzyaloshinskii-Moriya spiral magnet Ba₂CuGe₂O₇. The transition is induced by applying a magnetic field in the plane of spin rotation. In this experiment we have direct control over the strength of the commensurate potential, while the preferred incommensurate period of the spin system remains unchanged. Experimental results for the period of the soliton lattice and bulk magnetization as a function of external magnetic field are in quantitative agreement with theory.

Original language	English (US)
Pages (from-to)	4857-4860
Number of pages	4
Journal	Physical review letters
Volume	78
Issue number	25
DOIs	https://doi.org/10.1103/PhysRevLett.78.4857
State	Published - Jun 23 1997
Externally published	Yes

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General Physics and Astronomy

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10.1103/PhysRevLett.78.4857

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AU - Zheludev, A.

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AU - Shirane, G.

AU - Sasago, Y.

AU - Koide, N.

AU - Uchinokura, K.

PY - 1997/6/23

Y1 - 1997/6/23

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AB - We report an observation of a commensurate-incommensurate phase transition in a Dzyaloshinskii-Moriya spiral magnet Ba2CuGe2O7. The transition is induced by applying a magnetic field in the plane of spin rotation. In this experiment we have direct control over the strength of the commensurate potential, while the preferred incommensurate period of the spin system remains unchanged. Experimental results for the period of the soliton lattice and bulk magnetization as a function of external magnetic field are in quantitative agreement with theory.

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Field-Induced Commensurate-Incommensurate Phase Transition in a Dzyaloshinskii-Moriya Spiral Antiferromagnet

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