The field-induced soliton phase of CuGeO3

H.M. Rønnow; E. Mechthild; D.F. McMorrow; L.P. Regnault

doi:10.1016/S0921-4526(02)02628-5

The field-induced soliton phase of CuGeO₃

H.M. Rønnow, E. Mechthild, D.F. McMorrow, L.P. Regnault

Research output: Contribution to journal › Conference article › Research › peer-review

Abstract

The quasi-1D S = 1/2 antiferromagnet CuGeO3 undergoes a spin-Peierls transition to a dimerised singlet quantum ground state, with S = 1 carrying pairs of domain walls as elementary excitations. Applying a large magnetic field, the domain walls-solitons-can be condensed into the ground state, forming a static incommensurate soliton lattice, which has been investigated by neutron scattering. The static soliton structure was found to be in good accordance to field theoretical and numerical calculations, while a low energy incommensurate mode is interpreted as a gapped phason. We anticipate that theoretical description of this and higher energy excitations will provide general insight to the effect of structural fluctuations on correlated electron systems. (C) 2003 Elsevier Science B.V. All rights reserved.

Original language	English
Journal	Physica B: Condensed Matter
Volume	329-333
Pages (from-to)	675-678
ISSN	0921-4526
DOIs	https://doi.org/10.1016/S0921-4526(02)02628-5
Publication status	Published - 2003
Event	23rd International Conference on Low Temperature Physics - Hiroshima, Japan Duration: 20 Aug 2002 → 27 Aug 2002 Conference number: 23

Conference

Conference	23rd International Conference on Low Temperature Physics
Number	23
Country/Territory	Japan
City	Hiroshima
Period	20/08/2002 → 27/08/2002

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10.1016/S0921-4526(02)02628-5

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title = "The field-induced soliton phase of CuGeO3",

abstract = "The quasi-1D S = 1/2 antiferromagnet CuGeO3 undergoes a spin-Peierls transition to a dimerised singlet quantum ground state, with S = 1 carrying pairs of domain walls as elementary excitations. Applying a large magnetic field, the domain walls-solitons-can be condensed into the ground state, forming a static incommensurate soliton lattice, which has been investigated by neutron scattering. The static soliton structure was found to be in good accordance to field theoretical and numerical calculations, while a low energy incommensurate mode is interpreted as a gapped phason. We anticipate that theoretical description of this and higher energy excitations will provide general insight to the effect of structural fluctuations on correlated electron systems. (C) 2003 Elsevier Science B.V. All rights reserved. ",

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T1 - The field-induced soliton phase of CuGeO3

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AU - Mechthild, E.

AU - McMorrow, D.F.

AU - Regnault, L.P.

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N2 - The quasi-1D S = 1/2 antiferromagnet CuGeO3 undergoes a spin-Peierls transition to a dimerised singlet quantum ground state, with S = 1 carrying pairs of domain walls as elementary excitations. Applying a large magnetic field, the domain walls-solitons-can be condensed into the ground state, forming a static incommensurate soliton lattice, which has been investigated by neutron scattering. The static soliton structure was found to be in good accordance to field theoretical and numerical calculations, while a low energy incommensurate mode is interpreted as a gapped phason. We anticipate that theoretical description of this and higher energy excitations will provide general insight to the effect of structural fluctuations on correlated electron systems. (C) 2003 Elsevier Science B.V. All rights reserved.

AB - The quasi-1D S = 1/2 antiferromagnet CuGeO3 undergoes a spin-Peierls transition to a dimerised singlet quantum ground state, with S = 1 carrying pairs of domain walls as elementary excitations. Applying a large magnetic field, the domain walls-solitons-can be condensed into the ground state, forming a static incommensurate soliton lattice, which has been investigated by neutron scattering. The static soliton structure was found to be in good accordance to field theoretical and numerical calculations, while a low energy incommensurate mode is interpreted as a gapped phason. We anticipate that theoretical description of this and higher energy excitations will provide general insight to the effect of structural fluctuations on correlated electron systems. (C) 2003 Elsevier Science B.V. All rights reserved.

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