722 citations · 3.1k across the 23 of their papers we have counts for
24 papers
Hybrid ab initio method for examining thermal properties in magnetic materials
Matthew Heine, Olle Hellman, David Broido
A hybrid ab initio theoretical approach for examining thermal properties in magnetic systems of unknown entropy is presented. Commonly used theoretical approaches interrogate therm…
Phonon-phonon interactions in the polarizarion dependence of Raman scattering
Nimrod Benshalom, Maor Asher, Rémy Jouclas +6
We have found that the polarization dependence of Raman scattering in organic crystals at finite temperatures can only be described by a fourth-rank formalism. This generalization…
The dielectric response of rock-salt crystals at finite temperatures from first principles
Nimrod Benshalom, Guy Reuveni, Roman Korobko +2
We combine ab initio simulations and Raman scattering measurements to demonstrate explicit anharmonic effects in the temperature dependent dielectric response of a NaCl single crys…
Unraveling heat transport and dissipation in suspended MoSe crystals from bulk to monolayer
D. Saleta Reig, S. Varghese, R. Farris +14
Understanding thermal transport in layered transition metal dichalcogenide (TMD) crystals is crucial for a myriad of applications exploiting these materials. Despite significant ef…
Direct Observation of Chiral Phonons by Inelastic X-ray Scattering
Qingan Cai, Olle Hellman, Bin Wei +5
Phonon chirality has attracted intensive attention since it breaks the traditional cognition that phonons are linear propagating bosons. This new quasiparticle property has been ex…
The origin of the lattice thermal conductivity enhancement at the ferroelectric phase transition in GeTe
Đorđe Dangić, Olle Hellman, Stephen Fahy +1
The proximity to structural phase transitions in IV-VI thermoelectric materials is one of the main reasons for their large phonon anharmonicity and intrinsically low lattice therma…