Dimples due to dislocations at the superfluid/solid interface of 4He

H. Alles; A. V. Babkin; P. J. Hakonen; J. P. Ruutu; J. P. Saramäki; A.Ya. Parshin

doi:10.1007/BF00753347

Dimples due to dislocations at the superfluid/solid interface of ⁴He

H. Alles^*, A. V. Babkin, P. J. Hakonen, J. P. Ruutu, J. P. Saramäki, A.Ya. Parshin

^*Corresponding author for this work

Department of Applied Physics

Russian Academy of Sciences

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

1 Citation (Scopus)

Abstract

On vicinal planes the surface stiffness is quite anisotropic and a crystal defect, terminating at the interface, is predicted to produce a 10...50 nm deep dimple with macroscopic lateral extent (up to a few mm). We have searched for such depressions using high resolution interferometry. Sometimes our measured interferograms of the super fluid/solid interface display unexpectedly large dimples. The volume and shape of the observed objects suggest that these dimples are caused by bundles of about 10 dislocations.

Original language	English
Pages (from-to)	519-523
Number of pages	5
Journal	Journal of Low Temperature Physics
Volume	101
Issue number	3
DOIs	https://doi.org/10.1007/BF00753347
Publication status	Published - Nov 1995
MoE publication type	A1 Journal article-refereed

Keywords

crystal
helium
interface

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10.1007/BF00753347

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title = "Dimples due to dislocations at the superfluid/solid interface of 4He",

abstract = "On vicinal planes the surface stiffness is quite anisotropic and a crystal defect, terminating at the interface, is predicted to produce a 10...50 nm deep dimple with macroscopic lateral extent (up to a few mm). We have searched for such depressions using high resolution interferometry. Sometimes our measured interferograms of the super fluid/solid interface display unexpectedly large dimples. The volume and shape of the observed objects suggest that these dimples are caused by bundles of about 10 dislocations.",

keywords = "crystal, helium, interface, crystal, helium, interface, crystal, helium, interface",

author = "H. Alles and Babkin, {A. V.} and Hakonen, {P. J.} and Ruutu, {J. P.} and Saram{\"a}ki, {J. P.} and A.Ya. Parshin",

year = "1995",

month = nov,

doi = "10.1007/BF00753347",

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T1 - Dimples due to dislocations at the superfluid/solid interface of 4He

AU - Alles, H.

AU - Babkin, A. V.

AU - Hakonen, P. J.

AU - Ruutu, J. P.

AU - Saramäki, J. P.

AU - Parshin, A.Ya.

PY - 1995/11

Y1 - 1995/11

N2 - On vicinal planes the surface stiffness is quite anisotropic and a crystal defect, terminating at the interface, is predicted to produce a 10...50 nm deep dimple with macroscopic lateral extent (up to a few mm). We have searched for such depressions using high resolution interferometry. Sometimes our measured interferograms of the super fluid/solid interface display unexpectedly large dimples. The volume and shape of the observed objects suggest that these dimples are caused by bundles of about 10 dislocations.

AB - On vicinal planes the surface stiffness is quite anisotropic and a crystal defect, terminating at the interface, is predicted to produce a 10...50 nm deep dimple with macroscopic lateral extent (up to a few mm). We have searched for such depressions using high resolution interferometry. Sometimes our measured interferograms of the super fluid/solid interface display unexpectedly large dimples. The volume and shape of the observed objects suggest that these dimples are caused by bundles of about 10 dislocations.

KW - crystal

KW - helium

KW - interface

KW - crystal

KW - helium

KW - interface

KW - crystal

KW - helium

KW - interface

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U2 - 10.1007/BF00753347

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SP - 519

EP - 523

JO - Journal of Low Temperature Physics

JF - Journal of Low Temperature Physics

IS - 3

ER -

Dimples due to dislocations at the superfluid/solid interface of ⁴He

Abstract

Keywords

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