Cited by 76Thermal properties of materialsMagnetic properties of thin filmsThermography and Photoacoustic Techniques

Thermal conductance of interfaces with amorphous SiO 2 measured by time-resolved magneto-optic Kerr-effect thermometry

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Kimling, Judith, Philippi-Kobs, André, Jacobsohn, Jonathan, Oepen, Hans Peter, Cahill, David G.·2017·Physical Review B

Abstract

We use time-resolved magneto-optic Kerr effect and ultrathin Co/Pt transducer films to perform thermal-transport experiments with higher sensitivity and greater time resolution than typically available in studies of interfacial thermal transport by time-domain thermoreflectance. We measure the interface conductance between Pt and amorphous ${\mathrm{SiO}}_{2}$ using Pt/Co/Pt ferromagnetic transducer films with thicknesses between 4.2 and 8.2 nm and find an average value of ${G}_{\mathrm{Pt}}\ensuremath{\approx}0.3\phantom{\rule{4pt}{0ex}}\mathrm{GW}\phantom{\rule{4pt}{0ex}}{\mathrm{m}}^{\ensuremath{-}2}\phantom{\rule{4pt}{0ex}}{\mathrm{K}}^{\ensuremath{-}1}$. This result demonstrates that interfaces between metals and amorphous dielectrics can have a conductance corresponding to Kapitza lengths of the order of 4 nm, and are thus of relevance when engineering nanoscale devices. For thin ${\mathrm{SiO}}_{2}$ layers, our method also provides sensitivity to the interface conductance between ${\mathrm{SiO}}_{2}$ and Si and we find ${G}_{\mathrm{Si}}=0.6\phantom{\rule{4pt}{0ex}}\mathrm{GW}\phantom{\rule{4pt}{0ex}}{\mathrm{m}}^{\ensuremath{-}2}\phantom{\rule{4pt}{0ex}}{\mathrm{K}}^{\ensuremath{-}1}$ as the lower limit.

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  1. F. E. Jones and R. M. Schoonover, Handbook of Mass Measure- ment (CRC Press, Boca Raton, FL, 2002).

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Authors
Kimling, J., Philippi-Kobs, A., Jacobsohn, J., Oepen, H. P., & Cahill, D. G.
Affiliations
  • University of Illinois Urbana-Champaign (US)
  • Universität Hamburg (DE)
Venue
Physical Review B
Published
2017-05-22
Volume
95
Issue
18
ISSN
  • 2469-9950 (ISSN-L)
  • 2469-9969
OpenAlex
W2617091909
Cited by
76
References
37
Citations by year
2026: 14 · 2025: 7 · 2024: 8 · 2023: 6 · 2022: 9 · 2021: 7 · 2020: 12 · 2019: 6 · 2018: 5 · 2017: 2
FWCI
2.89
Type
journal article
Language
en
Open access
Locations
  • Physical review. B./Physical review. B (publishedVersion)
  • Desy publication database (The Deutsches Elektronen-Synchrotron) (submittedVersion, other-oa)
  • DESY Publication Database (PUBDB) (Deutsches Elektronen-Synchrotron)
Funders
Office of Naval Research (N00014-16-1-2436)
Topics
  • Physical Sciences › Materials Science › Materials Chemistry › Thermal properties of materials
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Magnetic properties of thin films
  • Physical Sciences › Engineering › Mechanics of Materials › Thermography and Photoacoustic Techniques
Keywords
interfacial thermal conductance, amorphous silica, Si/SiO2 interface, interfacial thermal resistance, metal-dielectric interface, heat transport, nanoscale thermal management

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