English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
  Specific Heat in Two-Dimensional Melting

Deutschländer, S., Puertas, A. M., Maret, G., & Keim, P. (2014). Specific Heat in Two-Dimensional Melting. Physical Review Letters, 113: 127801. doi:10.1103/PhysRevLett.113.127801.

Item is

Files

show Files

Locators

show

Creators

show
hide
 Creators:
Deutschländer, Sven, Author
Puertas, Antonio M., Author
Maret, Georg, Author
Keim, Peter1, Author           
Affiliations:
1Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2063285              

Content

show
hide
Free keywords: -
 Abstract: We report the specific heat
c
N
around the melting transition(s) of micrometer-sized superparamagnetic particles confined in two dimensions, calculated from fluctuations of positions and internal energy, and corresponding Monte Carlo simulations. Since colloidal systems provide single particle resolution, they offer the unique possibility to compare the experimental temperatures of the peak position of
c
N
(
T
)
and symmetry breaking, respectively. While order parameter correlation functions confirm the Kosterlitz-Thouless-Halperin-Nelson-Young melting scenario where translational and orientational order symmetries are broken at different temperatures with an intermediate so called hexatic phase, we observe a single peak of the specific heat within the hexatic phase, with excellent agreement between experiment and simulation. Thus, the peak is not associated with broken symmetries but can be explained with the total defect density, which correlates with the maximum increase of isolated dislocations. The absence of a latent heat strongly supports the continuous character of both transitions.

Details

show
hide
Language(s): eng - English
 Dates: 2014-09-182014
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1103/PhysRevLett.113.127801
 Degree: -

Event

show

Legal Case

show

Project information

show

Source 1

show
hide
Title: Physical Review Letters
Source Genre: Journal
 Creator(s):
Affiliations:
Publ. Info: -
Pages: 6 Volume / Issue: 113 Sequence Number: 127801 Start / End Page: - Identifier: ISSN: 0031-9007
ISSN: 1079-7114