B
Björn Wehinger
Researcher at University of Geneva
Publications - 37
Citations - 580
Björn Wehinger is an academic researcher from University of Geneva. The author has contributed to research in topics: Scattering & Phonon. The author has an hindex of 13, co-authored 33 publications receiving 488 citations. Previous affiliations of Björn Wehinger include European Synchrotron Radiation Facility & Paul Scherrer Institute.
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Journal ArticleDOI
Role of Disorder in the Thermodynamics and Atomic Dynamics of Glasses
Aleksandr I. Chumakov,Giulio Monaco,Giulio Monaco,Adriano Fontana,Adriano Fontana,Alexei Bosak,Raphaël P. Hermann,Raphaël P. Hermann,Dimitrios Bessas,Dimitrios Bessas,Björn Wehinger,Wilson A. Crichton,Michael Krisch,Rudolf Rüffer,Giacomo Baldi,Giuseppe Carini,Giovanna D'Angelo,Edmondo Gilioli,Gaspare Tripodo,Marco Zanatta,Marco Zanatta,Björn Winkler,Victor Milman,Keith Refson,Martin T. Dove,Natalia Dubrovinskaia,Leonid Dubrovinsky,Ralf Keding,Yuanzheng Yue +28 more
TL;DR: It is shown that glasses have higher specific heat than crystals not due to disorder, but because the typical glass has lower density than the typical crystal.
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Emergence of crystal-like atomic dynamics in glasses at the nanometer scale.
Giacomo Baldi,Marco Zanatta,Edmondo Gilioli,Victor Milman,Keith Refson,Björn Wehinger,Björn Winkler,Adriano Fontana,Adriano Fontana,Giulio Monaco,Giulio Monaco +10 more
TL;DR: The combined use of inelastic x-ray scattering experiments and ab initio numerical calculations provides compelling evidence of a transition, in the glass, from the isotropic elastic response at long wavelengths to a microscopic regime as the wavelength decreases below a characteristic length ξ of a few nanometers.
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First-principles calculation and experimental investigation of lattice dynamics in the rare-earth pyrochlores R2Ti2 O7 (R=Tb,Dy,Ho)
M. Ruminy,M. Núñez Valdez,M. Núñez Valdez,Björn Wehinger,Björn Wehinger,Alexei Bosak,D. T. Adroja,D. T. Adroja,Uwe Stuhr,Kazuki Iida,Kazuya Kamazawa,Ekaterina Pomjakushina,D. Prabakharan,M. K. Haas,Laura Bovo,Denis Sheptyakov,Antonio Cervellino,Robert J. Cava,Michel Kenzelmann,Nicola A. Spaldin,Tom Fennell +20 more
TL;DR: In this article, a model of the lattice dynamics of the rare-earth titanate pyrochlores R2Ti2O7 (R=Tb,Dy,Ho), which are important materials in the study of frustrated magnetism.
Journal ArticleDOI
Critical scattering and incommensurate phase transition in antiferroelectric PbZrO3 under pressure
R. G. Burkovsky,R. G. Burkovsky,Iurii Bronwald,Iurii Bronwald,Daria Andronikova,Daria Andronikova,Björn Wehinger,Björn Wehinger,Michael Krisch,J. Jacobs,D. Gambetti,Krystian Roleder,Andrzej Majchrowski,Alexey Filimonov,A. I. Rudskoy,S. B. Vakhrushev,S. B. Vakhrushev,Alexander K. Tagantsev,Alexander K. Tagantsev +18 more
TL;DR: It is shown that application of hydrostatic pressure drastically changes the character of critical lattice dynamics and enables the soft-mode-driven incommensurate phase transition sequence in lead zirconate.
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Electromagnon dispersion probed by inelastic X-ray scattering in LiCrO 2
Sándor Tóth,Björn Wehinger,Björn Wehinger,Katharina Rolfs,Turan Birol,Uwe Stuhr,Hiroshi Takatsu,Kenta Kimura,Tsuyoshi Kimura,Henrik M. Rønnow,Christian Rüegg,Christian Rüegg +11 more
TL;DR: The observation of strong magnon–phonon coupling in LiCrO2 that enables the measurement of magnetic correlations throughout the Brillouin zone via IXS and predicts that several (frustrated) magnets with dominant direct exchange and non-collinear magnetism show surprisingly large IXS cross-section for magnons and multi-magnon processes.