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Large effect of a small bias field in liquid-crystal magnetic transitions

Large effect of a small bias field in liquid-crystal magnetic transitions
Large effect of a small bias field in liquid-crystal magnetic transitions
Most liquid crystals show low sensitivity to magnetic field. However, in this paper we show that a small bias magnetic field not only breaks the symmetry of the ground state, but also plays a crucial role in facilitating the reorientation induced by a large test magnetic field. In particular, a small bias field may alter significantly the strength of the test field needed to observe a given reorientation of the liquid crystal. Moreover, the bias field interacts with other symmetry breaking features of the cell, e.g., pretilt, to change also the qualitative features of the equilibrium state.
0031-9007
1-4
Podoliak, Nina
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Buchnev, Oleksandr
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D'Alessandro, Giampaolo
bad097e1-9506-4b6e-aa56-3e67a526e83b
Kaczmarek, Malgosia
408ec59b-8dba-41c1-89d0-af846d1bf327
Sluckin, Timothy J.
8dbb6b08-7034-4ae2-aa65-6b80072202f6
Podoliak, Nina
0908b951-00a7-48a5-bc82-631640910b9c
Buchnev, Oleksandr
60cdb0d2-3388-47be-a066-61b3b396f69d
D'Alessandro, Giampaolo
bad097e1-9506-4b6e-aa56-3e67a526e83b
Kaczmarek, Malgosia
408ec59b-8dba-41c1-89d0-af846d1bf327
Sluckin, Timothy J.
8dbb6b08-7034-4ae2-aa65-6b80072202f6

Podoliak, Nina, Buchnev, Oleksandr, D'Alessandro, Giampaolo, Kaczmarek, Malgosia and Sluckin, Timothy J. (2010) Large effect of a small bias field in liquid-crystal magnetic transitions. Physical Review Letters, 82 (3), 1-4, [030701]. (doi:10.1103/PhysRevE.82.030701).

Record type: Article

Abstract

Most liquid crystals show low sensitivity to magnetic field. However, in this paper we show that a small bias magnetic field not only breaks the symmetry of the ground state, but also plays a crucial role in facilitating the reorientation induced by a large test magnetic field. In particular, a small bias field may alter significantly the strength of the test field needed to observe a given reorientation of the liquid crystal. Moreover, the bias field interacts with other symmetry breaking features of the cell, e.g., pretilt, to change also the qualitative features of the equilibrium state.

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Published date: September 2010
Organisations: Quantum, Light & Matter Group, Applied Mathematics

Identifiers

Local EPrints ID: 164063
URI: http://eprints.soton.ac.uk/id/eprint/164063
DOI: doi:10.1103/PhysRevE.82.030701
ISSN: 0031-9007
PURE UUID: 9b17fe0c-0adf-47ca-ab44-23e781695569
ORCID for Nina Podoliak: ORCID iD orcid.org/0000-0002-3146-0355
ORCID for Giampaolo D'Alessandro: ORCID iD orcid.org/0000-0001-9166-9356
ORCID for Timothy J. Sluckin: ORCID iD orcid.org/0000-0002-9163-0061

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Date deposited: 20 Sep 2010 07:58
Last modified: 18 Feb 2021 16:44

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Contributors

Author: Nina Podoliak ORCID iD
Author: Oleksandr Buchnev
Author: Giampaolo D'Alessandro ORCID iD
Author: Malgosia Kaczmarek
Author: Timothy J. Sluckin ORCID iD

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