Coherent Phonon Blocking in Superlattices

[2608.14880] Coherent Phonon Blocking in Superlattices Skip to main content Search Submit Donate Log in Search arXiv Press Enter to search · Advanced search Condensed Matter > Materials Science arXiv:2608.14880 (cond-mat) [Submitted on 14 Aug 2026] Title: Coherent Phonon Blocking in Superlattices Authors: Anil Erol , Xiang Hua , Kirby Myers , Lawrence Friedman , Alexander Marakov , Melissa G. Loving , Joshua Shipman , Arsha Mamoozadeh , Sarah Millen , Ronald J. Warzoha , Jeremy Clark , Robert M. Young View a PDF of the paper titled Coherent Phonon Blocking in Superlattices, by Anil Erol and 10 other authors View PDF Abstract: At cryogenic temperatures, phonons become one of the dominant energy carriers and thus can strongly influence the performance of electronic and sensing devices. In this work, we present a wave-mechanics based framework that predicts phonon transmission and thermal resistance of arbitrarily thick superlattices while retaining all acoustic branches, mode-conversion pathways, and angles of incidence. By enforcing phase coherence, our model predicts frequency-dependent transmission through arbitrary multi-layered this http URL use a genetic algorithm (NSGA-II) to efficiently select both materials and layer thicknesses. Our success criterion is that constituent layers satisfy the quarter-wavelength condition of the dominant phonon frequencies at a target temperature. This strategy identifies novel bilayer combinations that achieve thermal resistance of up to 3000 times greater than previously reported superlattices. The identified superlattices are poised to advance any technology that relies on coherent acoustic scattering, from ultra-low-temperature thermal insulation in superconducting flip-chip assemblies to phonon-blocking components in micro- and nano-electromechanical systems. Comments: 21 pages, 9 figures, The following article has been submitted to the Journal of Applied Physics. After it is published, it will be found at ( this https URL ) Subjects: Materials Science (cond-mat.mtrl-sci) ; Statistical Mechanics (cond-mat.stat-mech) Cite as: arXiv:2608.14880 [cond-mat.mtrl-sci] (or arXiv:2608.14880v1 [cond-mat.mtrl-sci] for this version) https://doi.org/10.48550/arXiv.2608.14880 Focus to learn more arXiv-issued DOI via DataCite Submission history From: Lawrence Friedman [ view email ] [v1] Fri, 14 Aug 2026 20:41:01 UTC (1,513 KB) Full-text links: Access Paper: View a PDF of the paper titled Coherent Phonon Blocking in Superlattices, by Anil Erol and 10 other authors View PDF view license Current browse context: cond-mat.mtrl-sci < prev | next > new | recent | 2026-08 Change to browse by: cond-mat cond-mat.stat-mech References & Citations NASA ADS Google Scholar Semantic Scholar export BibTeX citation Loading... BibTeX formatted citation × loading... Data provided by: Bookmark Bibliographic Tools Bibliographic and Citation Tools Bibliographic Explorer Toggle Bibliographic Explorer ( What is the Explorer? ) Connected Papers Toggle Connected Papers ( What is Connected Papers? ) Litmaps Toggle Litmaps ( What is Litmaps? ) scite.ai Toggle scite Smart Citations ( What are Smart Citations? ) Code, Data, Media Code, Data and Media Associated with this Article alphaXiv Toggle alphaXiv ( What is alphaXiv? ) Links to Code Toggle CatalyzeX Code Finder for Papers ( What is CatalyzeX? ) DagsHub Toggle DagsHub ( What is DagsHub? ) GotitPub Toggle Gotit.pub ( What is GotitPub? ) Huggingface Toggle Hugging Face ( What is Huggingface? ) ScienceCast Toggle ScienceCast ( What is ScienceCast? ) Demos Demos Replicate Toggle Replicate ( What is Replicate? ) Spaces Toggle Hugging Face Spaces ( What is Spaces? ) Spaces Toggle TXYZ.AI ( What is TXYZ.AI? ) Related Papers Recommenders and Search Tools Link to Influence Flower Influence Flower ( What are Influence Flowers? ) Core recommender toggle CORE Recommender ( What is CORE? ) IArxiv recommender toggle IArxiv Recommender ( What is IArxiv? ) Author Venue Institution Topic About arXivLabs arXivLabs: experimental projects with community collaborators arXivLabs is a framework that allows collaborators to develop and share new arXiv features directly on our website. Both individuals and organizations that work with arXivLabs have embraced and accepted our values of openness, community, excellence, and user data privacy. arXiv is committed to these values and only works with partners that adhere to them. Have an idea for a project that will add value for arXiv's community? Learn more about arXivLabs . Which authors of this paper are endorsers? | Disable MathJax ( What is MathJax? ) We gratefully acknowledge support from our major funders , member institutions , , and all contributors. About · Help · Contact · Subscribe · Copyright · Privacy · Accessibility · Operational Status (opens in new tab) Major funding support from

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