Locked-Floating-Solid to Locked-Smectic Transition in Colloidal Systems | Zendy

Jörg Baumgartl | Zendy; Matthias Brünner | Zendy; Clemens Bechinger | Zendy

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Locked-Floating-Solid to Locked-Smectic Transition in Colloidal Systems

Author(s) -

Jörg Baumgartl,

Matthias Brünner,

Clemens Bechinger

Publication year - 2004

Publication title -

physical review letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.688

H-Index - 673

eISSN - 1079-7114

pISSN - 0031-9007

DOI - 10.1103/physrevlett.93.168301

Subject(s) - commensurability (mathematics) , materials science , colloid , condensed matter physics , phase transition , substrate (aquarium) , colloidal particle , physics , chemical physics , optics , chemistry , geometry , mathematics , oceanography , geology

We investigate two-dimensional melting of a colloidal system in the presence of a one-dimensional periodic substrate potential created by two interfering laser beams. We study the commensurability ratio p=sqrt[3]a/2d=2 with a the mean particle distance and d the period of the periodic potential. In contrast with the previously investigated case p=1, here we observe that melting of the locked-floating solid occurs via a novel locked-smectic phase, predicted by recent theoretical studies.

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