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A Helium-Surface Interaction Potential of Bi2Te3(111) from Ultrahigh-Resolution Spin-Echo Measurements

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A Helium-Surface Interaction Potential of Bi2Te3(111) from Ultrahigh-Resolution Spin-Echo Measurements. / Tamtögl, Anton; Pusterhofer, Michael; Bremholm, Martin; Hedegaard, Ellen M.J.; Iversen, Bo B.; Hofmann, Philip; Ellis, John; Allison, William; Miret-Artés, S.; Ernst, Wolfgang E.

In: Surface Science, Vol. 678, No. 12, 01.12.2018, p. 25 - 31.

Research output: Contribution to journal/Conference contribution in journal/Contribution to newspaperJournal articleResearchpeer-review

Harvard

Tamtögl, A, Pusterhofer, M, Bremholm, M, Hedegaard, EMJ, Iversen, BB, Hofmann, P, Ellis, J, Allison, W, Miret-Artés, S & Ernst, WE 2018, 'A Helium-Surface Interaction Potential of Bi2Te3(111) from Ultrahigh-Resolution Spin-Echo Measurements', Surface Science, vol. 678, no. 12, pp. 25 - 31. https://doi.org/10.1016/j.susc.2018.02.006

APA

CBE

Tamtögl A, Pusterhofer M, Bremholm M, Hedegaard EMJ, Iversen BB, Hofmann P, Ellis J, Allison W, Miret-Artés S, Ernst WE. 2018. A Helium-Surface Interaction Potential of Bi2Te3(111) from Ultrahigh-Resolution Spin-Echo Measurements. Surface Science. 678(12):25 - 31. https://doi.org/10.1016/j.susc.2018.02.006

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Author

Tamtögl, Anton ; Pusterhofer, Michael ; Bremholm, Martin ; Hedegaard, Ellen M.J. ; Iversen, Bo B. ; Hofmann, Philip ; Ellis, John ; Allison, William ; Miret-Artés, S. ; Ernst, Wolfgang E. / A Helium-Surface Interaction Potential of Bi2Te3(111) from Ultrahigh-Resolution Spin-Echo Measurements. In: Surface Science. 2018 ; Vol. 678, No. 12. pp. 25 - 31.

Bibtex

@article{6156c2af314942c18e5edab2bbdfad62,
title = "A Helium-Surface Interaction Potential of Bi2Te3(111) from Ultrahigh-Resolution Spin-Echo Measurements",
abstract = "We have determined an atom-surface interaction potential for the He-Bi2Te3(111) system by analysing ultrahigh resolution measurements of selective adsorption resonances. The experimental measurements were obtained using 3He spin-echo spectrometry. Following an initial free-particle model analysis, we use elastic close-coupling calculations to obtain a three-dimensional potential. The three-dimensional potential is then further refined based on the experimental data set, giving rise to an optimised potential which fully reproduces the experimental data. Based on this analysis, the He-Bi2Te3(111) interaction potential can be described by a corrugated Morse potential with a well depth D=(6.22±0.05)meV, a stiffness κ=(0.92±0.01) {\AA}-1 and a surface electronic corrugation of (9.6 ± 0.2){\%} of the lattice constant. The improved uncertainties of the atom-surface interaction potential should also enable the use in inelastic close-coupled calculations in order to eventually study the temperature dependence and the line width of selective adsorption resonances.",
keywords = "Adsorption, Atom scattering, Atom-surface interaction, Bi2Te3, Bound states, Topological insulator",
author = "Anton Tamt{\"o}gl and Michael Pusterhofer and Martin Bremholm and Hedegaard, {Ellen M.J.} and Iversen, {Bo B.} and Philip Hofmann and John Ellis and William Allison and S. Miret-Art{\'e}s and Ernst, {Wolfgang E.}",
year = "2018",
month = "12",
day = "1",
doi = "10.1016/j.susc.2018.02.006",
language = "English",
volume = "678",
pages = "25 -- 31",
journal = "Surface Science",
issn = "0039-6028",
publisher = "Elsevier BV * North-Holland",
number = "12",

}

RIS

TY - JOUR

T1 - A Helium-Surface Interaction Potential of Bi2Te3(111) from Ultrahigh-Resolution Spin-Echo Measurements

AU - Tamtögl, Anton

AU - Pusterhofer, Michael

AU - Bremholm, Martin

AU - Hedegaard, Ellen M.J.

AU - Iversen, Bo B.

AU - Hofmann, Philip

AU - Ellis, John

AU - Allison, William

AU - Miret-Artés, S.

AU - Ernst, Wolfgang E.

PY - 2018/12/1

Y1 - 2018/12/1

N2 - We have determined an atom-surface interaction potential for the He-Bi2Te3(111) system by analysing ultrahigh resolution measurements of selective adsorption resonances. The experimental measurements were obtained using 3He spin-echo spectrometry. Following an initial free-particle model analysis, we use elastic close-coupling calculations to obtain a three-dimensional potential. The three-dimensional potential is then further refined based on the experimental data set, giving rise to an optimised potential which fully reproduces the experimental data. Based on this analysis, the He-Bi2Te3(111) interaction potential can be described by a corrugated Morse potential with a well depth D=(6.22±0.05)meV, a stiffness κ=(0.92±0.01) Å-1 and a surface electronic corrugation of (9.6 ± 0.2)% of the lattice constant. The improved uncertainties of the atom-surface interaction potential should also enable the use in inelastic close-coupled calculations in order to eventually study the temperature dependence and the line width of selective adsorption resonances.

AB - We have determined an atom-surface interaction potential for the He-Bi2Te3(111) system by analysing ultrahigh resolution measurements of selective adsorption resonances. The experimental measurements were obtained using 3He spin-echo spectrometry. Following an initial free-particle model analysis, we use elastic close-coupling calculations to obtain a three-dimensional potential. The three-dimensional potential is then further refined based on the experimental data set, giving rise to an optimised potential which fully reproduces the experimental data. Based on this analysis, the He-Bi2Te3(111) interaction potential can be described by a corrugated Morse potential with a well depth D=(6.22±0.05)meV, a stiffness κ=(0.92±0.01) Å-1 and a surface electronic corrugation of (9.6 ± 0.2)% of the lattice constant. The improved uncertainties of the atom-surface interaction potential should also enable the use in inelastic close-coupled calculations in order to eventually study the temperature dependence and the line width of selective adsorption resonances.

KW - Adsorption

KW - Atom scattering

KW - Atom-surface interaction

KW - Bi2Te3

KW - Bound states

KW - Topological insulator

UR - http://www.scopus.com/inward/record.url?scp=85042177580&partnerID=8YFLogxK

U2 - 10.1016/j.susc.2018.02.006

DO - 10.1016/j.susc.2018.02.006

M3 - Journal article

VL - 678

SP - 25

EP - 31

JO - Surface Science

JF - Surface Science

SN - 0039-6028

IS - 12

ER -