Cited by 514Thermal properties of materialsElectronic and Structural Properties of OxidesAdvanced Thermoelectric Materials and Devices

Crossover from incoherent to coherent phonon scattering in epitaxial oxide superlattices

Ravichandran, Jayakanth, Yadav, Ajay K., Cheaito, Ramez, Rossen, Pim B., Soukiassian, Arsen, Suresha, S. J., Duda, John C., Foley, Brian M. +10 more·2014·Nature Materials

Abstract

Elementary particles such as electrons or photons are frequent subjects of wave-nature-driven investigations, unlike collective excitations such as phonons. The demonstration of wave-particle crossover, in terms of macroscopic properties, is crucial to the understanding and application of the wave behaviour of matter. We present an unambiguous demonstration of the theoretically predicted crossover from diffuse (particle-like) to specular (wave-like) phonon scattering in epitaxial oxide superlattices, manifested by a minimum in lattice thermal conductivity as a function of interface density. We do so by synthesizing superlattices of electrically insulating perovskite oxides and systematically varying the interface density, with unit-cell precision, using two different epitaxial-growth techniques. These observations open up opportunities for studies on the wave nature of phonons, particularly phonon interference effects, using oxide superlattices as model systems, with extensive applications in thermoelectrics and thermal management.

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Crossref · 10.1038/nmat3826

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Authors
Ravichandran, J., Yadav, A. K., Cheaito, R., Rossen, P. B., Soukiassian, A., Suresha, S. J., Duda, J. C., Foley, B. M., Lee, C.-H., Zhu, Y., Lichtenberger, A. W., Moore, J. E., Muller, D. A., Schlom, D. G., Hopkins, P. E., Majumdar, A., Ramesh, R., & Zurbuchen, M. A.
Affiliations
  • Lawrence Berkeley National Laboratory (US)
  • University of Virginia (US)
  • University of California, Berkeley (US)
  • Cornell University (US)
  • Defense Advanced Research Projects Agency (US)
  • Oak Ridge National Laboratory (US)
  • California NanoSystems Institute (US)
Corresponding author
  • Ramesh, Ramamoorthy
  • Zurbuchen, Mark A.
Venue
Nature Materials
Published
2013-12-08
Volume
13
Issue
2
Pages
168-172
ISSN
  • 1476-1122 (ISSN-L)
  • 1476-4660
OpenAlex
W1995171056
Cited by
514
References
48
Citations by year
2026: 23 · 2025: 37 · 2024: 40 · 2023: 35 · 2022: 45 · 2021: 60 · 2020: 49 · 2019: 46 · 2018: 52 · 2017: 36 · 2016: 39 · 2015: 40 · 2014: 12
FWCI
13.70
Type
journal article
Language
en
Open access
closed
Locations
  • Nature Materials (publishedVersion)
  • PubMed (publishedVersion)
Funders
National Center for Research Resources (1S10RR23057, S10RR023057)
Topics
  • Physical Sciences › Materials Science › Materials Chemistry › Thermal properties of materials
  • Physical Sciences › Materials Science › Materials Chemistry › Electronic and Structural Properties of Oxides
  • Physical Sciences › Materials Science › Materials Chemistry › Advanced Thermoelectric Materials and Devices
Keywords
phonon scattering, oxide superlattices, lattice thermal conductivity, interface density, perovskite oxides, phonon interference, epitaxial growth, heat transport, thermoelectric materials, thermal management
MeSH terms
Computer Simulation, Crystallization, Materials Testing, Models, Chemical, Oxides, Scattering, Radiation, Thermal Conductivity, Titanium, Calcium Compounds

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