Real-space measurement of surface roughening

M. S. Hoogeman; M. A.J. Klik; D. C. Schlößer; L. Kuipers; J. W.M. Frenken

doi:10.1103/PhysRevLett.82.1728

Real-space measurement of surface roughening

M. S. Hoogeman, M. A.J. Klik, D. C. Schlößer, L. Kuipers, J. W.M. Frenken

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

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Abstract

We use variable-temperature scanning tunneling microscopy (STM) combined with pattern recognition of STM images to demonstrate that the vicinal Ag(115) surface undergoes a true Kosterlitz-Thouless(KT)-type roughening transition. As predicted, the height correlation function remains finite below the roughening temperature and it evolves to a logarithmically diverging function at and above T_R. From a quantitative analysis of the height fluctuations we derive a roughening temperature of T_R = 465+/-25K. Recent diffraction experiments could not confirm a KT-type roughening transition on vicinal surfaces. We attribute this to small residual errors in local surface orientation, which overshadow the real thermally excited height fluctuations.

Original language	English
Pages (from-to)	1728-1731
Number of pages	4
Journal	Physical Review Letters
Volume	82
Issue number	8
DOIs	https://doi.org/10.1103/PhysRevLett.82.1728
Publication status	Published - 1-Jan-1999
Externally published	Yes

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title = "Real-space measurement of surface roughening",

abstract = "We use variable-temperature scanning tunneling microscopy (STM) combined with pattern recognition of STM images to demonstrate that the vicinal Ag(115) surface undergoes a true Kosterlitz-Thouless(KT)-type roughening transition. As predicted, the height correlation function remains finite below the roughening temperature and it evolves to a logarithmically diverging function at and above TR. From a quantitative analysis of the height fluctuations we derive a roughening temperature of TR = 465+/-25K. Recent diffraction experiments could not confirm a KT-type roughening transition on vicinal surfaces. We attribute this to small residual errors in local surface orientation, which overshadow the real thermally excited height fluctuations.",

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AU - Hoogeman, M. S.

AU - Klik, M. A.J.

AU - Schlößer, D. C.

AU - Kuipers, L.

AU - Frenken, J. W.M.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - We use variable-temperature scanning tunneling microscopy (STM) combined with pattern recognition of STM images to demonstrate that the vicinal Ag(115) surface undergoes a true Kosterlitz-Thouless(KT)-type roughening transition. As predicted, the height correlation function remains finite below the roughening temperature and it evolves to a logarithmically diverging function at and above TR. From a quantitative analysis of the height fluctuations we derive a roughening temperature of TR = 465+/-25K. Recent diffraction experiments could not confirm a KT-type roughening transition on vicinal surfaces. We attribute this to small residual errors in local surface orientation, which overshadow the real thermally excited height fluctuations.

AB - We use variable-temperature scanning tunneling microscopy (STM) combined with pattern recognition of STM images to demonstrate that the vicinal Ag(115) surface undergoes a true Kosterlitz-Thouless(KT)-type roughening transition. As predicted, the height correlation function remains finite below the roughening temperature and it evolves to a logarithmically diverging function at and above TR. From a quantitative analysis of the height fluctuations we derive a roughening temperature of TR = 465+/-25K. Recent diffraction experiments could not confirm a KT-type roughening transition on vicinal surfaces. We attribute this to small residual errors in local surface orientation, which overshadow the real thermally excited height fluctuations.

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Real-space measurement of surface roughening

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