Dynamics and Topology of Symmetry Breaking with Skyrmions

被引：3

作者：

Pisljar, J. ^{[1
]}

Nych, A. ^{[1
,2
]}

Ognysta, U. ^{[2
]}

Petelin, A. ^{[3
,5
]}

Kralj, S. ^{[1
,4
]}

Musevic, I. ^{[1
,5
]}

机构：

[1] J Stefan Inst, Condensed Matter Dept, Jamova cesta 39, Ljubljana 1000, Slovenia

[2] Inst Phys, Dept Mol Photoelect, Nauky Prospect 46, UA-03680 Kiev, Ukraine

[3] J Stefan Inst, Complex Matter Dept, Jamova cesta 39, Ljubljana 1000, Slovenia

[4] Univ Maribor, Fac Nat Sci & Math, Dept Phys, Koroska Cesta 160, Maribor 2000, Slovenia

[5] Univ Ljubljana, Fac Math & Phys, Jadranska 19, Ljubljana 1000, Slovenia

来源：

PHYSICAL REVIEW LETTERS | 2024年 / 132卷 / 17期

关键词：

NEMATIC-ISOTROPIC TRANSITION; BUBBLE-DOMAIN TEXTURE; LIQUID-CRYSTALS; PHASE;

D O I：

10.1103/PhysRevLett.132.178101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We observe that pretransitional order parameter fluctuations of a skyrmion-forming chiral nematic liquid crystal are slowed down for 4 orders of magnitude, if confined to less than or similar to 100 nm thin layers. Fluctuating fragments of half-skyrmions are observed in a narrow temperature interval and are explained by thermally activated hopping between the various energy states. Skyrmion fluctuations are accompanied by imbalanced topological charge: positive charges appear at higher temperatures and dominate in the fluctuating region until skyrmions fully condense and negative charges appear at lower temperatures.

引用

页数：6

共 43 条

[1] Cross-differential dynamic microscopy [J].

Arko, Matej ;

Petelin, Andrej .

SOFT MATTER, 2019, 15 (13) :2791-2797

[2] Skyrmions in nematic liquid crystals -: art. no. 016602 [J].

Bogdanov, AN ;

Rössler, UK ;

Shestakov, AA .

PHYSICAL REVIEW E, 2003, 67 (01) :8

[3] Capillary forces in a confined isotropic-nematic liquid crystal [J].

Bracic, AB ;

Kocevar, K ;

Musevic, I ;

Zumer, S .

PHYSICAL REVIEW E, 2003, 68 (01) :9

[4] Differential dynamic microscopy: Probing wave vector dependent dynamics with a microscope [J].

Cerbino, Roberto ;

Trappe, Veronique .

PHYSICAL REVIEW LETTERS, 2008, 100 (18)

[5]

Cochran W., 1971, Structural Phase Transitions and Soft Modes

[6]

de Gennes P.G., 1995, PHYS LIQUID CRYSTALS, V2nd, DOI [10.1063/1.2808028, DOI 10.1063/1.2808028]

[7] MEASUREMENTS OF THE INTERFACIAL-TENSION BETWEEN NEMATIC AND ISOTROPIC-PHASE OF SOME CYANOBIPHENYLS [J].

FAETTI, S ;

PALLESCHI, V .

JOURNAL OF CHEMICAL PHYSICS, 1984, 81 (12) :6254-6258

[8] Liquid Crystalline Half-Skyrmions and Their Optical Properties [J].

Fukuda, Jun-ichi ;

Nych, Andriy ;

Ognysta, Uliana ;

Zumer, Slobodan ;

Musevic, Igor .

ANNALEN DER PHYSIK, 2022, 534 (02)

[9] Digital Fourier microscopy for soft matter dynamics [J].

Giavazzi, Fabio ;

Cerbino, Roberto .

JOURNAL OF OPTICS, 2014, 16 (08)

[10] Viscoelasticity of nematic liquid crystals at a glance [J].

Giavazzi, Fabio ;

Crotti, Stefano ;

Speciale, Antonio ;

Serra, Francesca ;

Zanchetta, Giuliano ;

Trappe, Veronique ;

Buscaglia, Marco ;

Bellini, Tommaso ;

Cerbino, Roberto .

SOFT MATTER, 2014, 10 (22) :3938-3949

← 1 2 3 4 5 →