External magnetic field effect on helical configurations

E. Rastelli; A. Tassi; G. Melegari; Alberto Pimpinelli

doi:10.1016/0304-8853(92)90752-A

External magnetic field effect on helical configurations

E. Rastelli, A. Tassi, G. Melegari, Alberto Pimpinelli

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6 Scopus citations

Abstract

An external magnetic field induces first-order helix-fan phase transition only if the spin-spin turn angle Q is lesser than π/2, while the helix is distorted continously by the field into the saturated paramagnetic phase when Q>π/2. Our calculation is valid for a generic value of the field and our conclusion is in contrast with previous expectations based on low-field-high-field expansion of the zero-temperature energy of the planar model.

Original language	English (US)
Pages (from-to)	173-174
Number of pages	2
Journal	Journal of Magnetism and Magnetic Materials
Volume	104-107
Issue number	PART 1
DOIs	https://doi.org/10.1016/0304-8853(92)90752-A
State	Published - Feb 2 1992

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "External magnetic field effect on helical configurations",

abstract = "An external magnetic field induces first-order helix-fan phase transition only if the spin-spin turn angle Q is lesser than π/2, while the helix is distorted continously by the field into the saturated paramagnetic phase when Q>π/2. Our calculation is valid for a generic value of the field and our conclusion is in contrast with previous expectations based on low-field-high-field expansion of the zero-temperature energy of the planar model.",

author = "E. Rastelli and A. Tassi and G. Melegari and Alberto Pimpinelli",

year = "1992",

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doi = "10.1016/0304-8853(92)90752-A",

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T1 - External magnetic field effect on helical configurations

AU - Rastelli, E.

AU - Tassi, A.

AU - Melegari, G.

AU - Pimpinelli, Alberto

PY - 1992/2/2

Y1 - 1992/2/2

N2 - An external magnetic field induces first-order helix-fan phase transition only if the spin-spin turn angle Q is lesser than π/2, while the helix is distorted continously by the field into the saturated paramagnetic phase when Q>π/2. Our calculation is valid for a generic value of the field and our conclusion is in contrast with previous expectations based on low-field-high-field expansion of the zero-temperature energy of the planar model.

AB - An external magnetic field induces first-order helix-fan phase transition only if the spin-spin turn angle Q is lesser than π/2, while the helix is distorted continously by the field into the saturated paramagnetic phase when Q>π/2. Our calculation is valid for a generic value of the field and our conclusion is in contrast with previous expectations based on low-field-high-field expansion of the zero-temperature energy of the planar model.

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U2 - 10.1016/0304-8853(92)90752-A

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M3 - Article

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EP - 174

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

SN - 0304-8853

IS - PART 1

ER -

External magnetic field effect on helical configurations

Abstract

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