53 citations · 219 across the 9 of their papers we have counts for
9 papers
Static and Dynamic Disorder in Formamidinium Lead Bromide Single Crystals
Guy Reuveni, Yael Diskin-Posner, Christian Gehrmann +8
We show that formamidinium lead bromide is unique among the halide perovskite crystals because its inorganic sub-lattice exhibits intrinsic local static disorder that co-exists wit…
The Disorder Origin of Raman Scattering In Perovskites Single Crystals
Matan Menahem, Nimrod Benshalom, Maor Asher +5
The anharmonic lattice dynamics of oxide and halide perovskites play a crucial role in their mechanical and optical properties. Raman spectroscopy is one of the key methods used to…
Dynamic disorder in Bi sub-lattice of -BiO
Rituraj Sharma, Nimrod Benshalom, Maor Asher +4
-BiO is one of the fastest known solid oxide ion conductors owing to its intrinsically defective fluorite-like structure with 25\% vacant sites in the O sub-lattice. Num…
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…
The tetragonal phase of CHNHPbI is strongly anharmonic
Rituraj Sharma, Zhenbang Dai, Lingyuan Gao +7
Halide perovskite (HP) semiconductors exhibit unique strong coupling between the electronic and structural dynamics. The high-temperature cubic phase of HPs is known to be entropic…
Halide perovskites under polarized light: Vibrational symmetry analysis using polarized Raman
Rituraj Sharma, Matan Menahem, Zhenbang Dai +9
In the last decade, hybrid organic-inorganic halide perovskites have emerged as a new type of semiconductor for photovoltaics and other optoelectronic applications. Unlike standard…
Anharmonic Lattice Vibrations in Small-Molecule Organic Semiconductors
Maor Asher, Daniel Angerer, Roman Korobko +3
The intermolecular lattice vibrations in small-molecule organic semiconductors have a strong impact on their functional properties. Existing models treat the lattice vibrations wit…
Anharmonic Host Lattice Dynamics Enable Fast Ion Conduction in Superionic AgI
Thomas M. Brenner, Christian Gehrmann, Roman Korobko +3
Basic understanding of the driving forces of ion conduction in solids is critical to the development of new solid-state ion conductors. Physical understanding of ion conduction is…