Determination of Step Free Energies from Island Shape Fluctuations on Metal Surfaces

Dietmar C. Schlößer; Laurens K. Verheij; Georg Rosenfeld; George Comsa

doi:10.1103/PhysRevLett.82.3843

Determination of Step Free Energies from Island Shape Fluctuations on Metal Surfaces

Dietmar C. Schlößer
, Laurens K. Verheij
, Georg Rosenfeld
, George Comsa

Physics of Interfaces and Nanomaterials

Research output: Contribution to journal › Article › Academic › peer-review

80 Citations (Scopus)

175 Downloads (Pure)

Abstract

The absolute measurement of free energies associated with crystal steps on a metal surface has been a long-standing problem. We report a reliable estimate of the step free energy on a Cu(111) crystal surface, based on an analysis of island shape fluctuations directly imaged by scanning tunneling microscopy. The result of 0.22 eV per atomic distance for steps running into close-packed directions is in good agreement with theoretical predictions.

Original language	English
Pages (from-to)	3843-3846
Number of pages	4
Journal	Physical review letters
Volume	82
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevLett.82.3843
Publication status	Published - 1999

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10.1103/PhysRevLett.82.3843

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title = "Determination of Step Free Energies from Island Shape Fluctuations on Metal Surfaces",

abstract = "The absolute measurement of free energies associated with crystal steps on a metal surface has been a long-standing problem. We report a reliable estimate of the step free energy on a Cu(111) crystal surface, based on an analysis of island shape fluctuations directly imaged by scanning tunneling microscopy. The result of 0.22 eV per atomic distance for steps running into close-packed directions is in good agreement with theoretical predictions.",

author = "Schl{\"o}{\ss}er, \{Dietmar C.\} and Verheij, \{Laurens K.\} and Georg Rosenfeld and George Comsa",

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AU - Schlößer, Dietmar C.

AU - Verheij, Laurens K.

AU - Rosenfeld, Georg

AU - Comsa, George

PY - 1999

Y1 - 1999

N2 - The absolute measurement of free energies associated with crystal steps on a metal surface has been a long-standing problem. We report a reliable estimate of the step free energy on a Cu(111) crystal surface, based on an analysis of island shape fluctuations directly imaged by scanning tunneling microscopy. The result of 0.22 eV per atomic distance for steps running into close-packed directions is in good agreement with theoretical predictions.

AB - The absolute measurement of free energies associated with crystal steps on a metal surface has been a long-standing problem. We report a reliable estimate of the step free energy on a Cu(111) crystal surface, based on an analysis of island shape fluctuations directly imaged by scanning tunneling microscopy. The result of 0.22 eV per atomic distance for steps running into close-packed directions is in good agreement with theoretical predictions.

U2 - 10.1103/PhysRevLett.82.3843

DO - 10.1103/PhysRevLett.82.3843

M3 - Article

SN - 0031-9007

VL - 82

SP - 3843

EP - 3846

JO - Physical review letters

JF - Physical review letters

IS - 19

ER -

Determination of Step Free Energies from Island Shape Fluctuations on Metal Surfaces

Abstract

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