Deutsch
 
Hilfe Datenschutzhinweis Impressum
  DetailsucheBrowse

Datensatz

DATENSATZ AKTIONENEXPORT
  Violation of Boltzmann Equipartition Theorem in Angular Phonon Phase Space Slows down Nanoscale Heat Transfer in Ultrathin Heterofilms

Hanisch-Blicharski, A., Tinnemann, V., Wall, S., Thiemann, F., Groven, T., Fortmann, J., et al. (2021). Violation of Boltzmann Equipartition Theorem in Angular Phonon Phase Space Slows down Nanoscale Heat Transfer in Ultrathin Heterofilms. Nano Letters, 21(17), 7145-7151. doi:10.1021/acs.nanolett.1c01665.

Item is

Basisdaten

einblenden: ausblenden:
Genre: Zeitschriftenartikel

Dateien

einblenden: Dateien
ausblenden: Dateien
:
acs.nanolett.1c01665.pdf (Verlagsversion), 2MB
 
Datei-Permalink:
-
Name:
acs.nanolett.1c01665.pdf
Beschreibung:
-
OA-Status:
Sichtbarkeit:
Privat
MIME-Typ / Prüfsumme:
application/pdf
Technische Metadaten:
Copyright Datum:
-
Copyright Info:
-
Lizenz:
-
:
nl1c01665_si_001.pdf (Ergänzendes Material), 4MB
Name:
nl1c01665_si_001.pdf
Beschreibung:
Supporting Information: Finite element simulations on transient heating of Si substrate; additional atomic force micrographs; calculations on transmission probability for ballistic phonon transport
OA-Status:
Keine Angabe
Sichtbarkeit:
Öffentlich
MIME-Typ / Prüfsumme:
application/pdf / [MD5]
Technische Metadaten:
Copyright Datum:
-
Copyright Info:
-
Lizenz:
-

Externe Referenzen

einblenden:
ausblenden:
externe Referenz:
https://dx.doi.org/10.1021/acs.nanolett.1c01665 (Verlagsversion)
Beschreibung:
-
OA-Status:
Keine Angabe

Urheber

einblenden:
ausblenden:
 Urheber:
Hanisch-Blicharski, A.1, Autor
Tinnemann, V.1, Autor
Wall, S.1, Autor
Thiemann, F.1, Autor
Groven, T.1, Autor
Fortmann, J.1, Autor
Tajik, M.1, Autor
Brand, C.1, Autor
Frost, B.-O.1, Autor
von Hoegen, A.2, Autor           
Horn-von Hoegen, M.1, 3, Autor
Affiliations:
1Faculty of Physics, University of Duisburg-Essen, ou_persistent22              
2Quantum Condensed Matter Dynamics, Condensed Matter Dynamics Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society, ou_1938293              
3Center for Nanointegration (CENIDE), ou_persistent22              

Inhalt

einblenden:
ausblenden:
Schlagwörter: Nanoscale heat transport, acoustic mismatch model, diffusive mismatch model, thermal boundary conductance, ultrathin Bi films, TR-RHEED
 Zusammenfassung: Heat transfer through heterointerfaces is intrinsically hampered by a thermal boundary resistance originating from the discontinuity of the elastic properties. Here, we show that with shrinking dimensions the heat flow from an ultrathin epitaxial film through atomically flat interfaces into a single crystalline substrate is significantly reduced due to violation of Boltzmann equipartition theorem in the angular phonon phase space. For films thinner than the phonons mean free path, we find phonons trapped in the film by total internal reflection, thus suppressing heat transfer. Repopulation of those phonon states, which can escape the film through the interface by transmission and refraction, becomes the bottleneck for cooling. The resulting nonequipartition in the angular phonon phase space slows down the cooling by more than a factor of 2 compared to films governed by phonons diffuse scattering. These allow tailoring of the thermal interface conductance via manipulation of the interface.

Details

einblenden:
ausblenden:
Sprache(n): eng - English
 Datum: 2021-08-112021-05-032021-08-182021-09-08
 Publikationsstatus: Erschienen
 Seiten: 7
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1021/acs.nanolett.1c01665
 Art des Abschluß: -

Veranstaltung

einblenden:

Entscheidung

einblenden:

Projektinformation

einblenden: ausblenden:
Projektname : The authors gratefully acknowledge valuable discussions with D. Wolf and B. Rethfeld. Funding by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) through Collaborative Research Center SFB 616 “Energy Dissipation at Surfaces” and project B04 of Collaborative Research Center SFB 1242 “Nonequilibrium dynamics of condensed matter in the time domain” (Project-ID 278162697) is appreciated. A.H.B., S.W., and V.T. performed the TR-RHEED experiments and analyzed the experimental data. A.H.B. and M.H.v.H. performed the model calculations. A.v.H. performed the finite element simulation. B.O.F. and M.H.v.H. conceived the experiment. The manuscript was written and figures created by A.H.B., F.T., T.G., J.F., M.T., C.B., A.v.H., and M.H.v.H. All authors discussed the results and commented on the manuscript.
Grant ID : -
Förderprogramm : -
Förderorganisation : -

Quelle 1

einblenden:
ausblenden:
Titel: Nano Letters
  Kurztitel : Nano Lett.
Genre der Quelle: Zeitschrift
 Urheber:
Affiliations:
Ort, Verlag, Ausgabe: Washington, DC : American Chemical Society
Seiten: - Band / Heft: 21 (17) Artikelnummer: - Start- / Endseite: 7145 - 7151 Identifikator: ISSN: 1530-6984
CoNE: https://pure.mpg.de/cone/journals/resource/110978984570403