141 citations · 217 across the 12 of their papers we have counts for
13 papers
Dynamical multiferroicity in framework materials
Marek Matas, Carl P. Romao
Dynamical multiferroicity, which describes the magnetic fields generated by circularly polarized phonons in materials, is an established mechanism for optical control of magnetism.…
Electric field switching of chiral phonons
Michael Grimes, Clifford J. Allington, Hiroki Ueda +8
Lattice vibrations carrying angular momentum, known as chiral phonons, have emerged as a promising route to control and understand complex material properties, yet their determinis…
Structural Evolution during Reversible Halogen Intercalation into WTe2: Commensurate-Incommensurate WTe2I and Multistage WTe2Brx (x = 0.5, 1.0 and 1.25)
Patrick Schmidt, Carl P. Romao, Hans-Jürgen Meyer
Halogen intercalation into the layered material tungsten ditelluride (WTe2) provides a unique pathway to tune its structural and electronic properties. In this study, we detail the…
Zero Indirect Band Gap and Flat Bands in a Niobium Oxyiodide Cluster Material
Jan Beitlberger, Mario Martin, Marcus Scheele +4
Explorative chemistry in a reaction system composed of NbI, Li(CN), and LiO has led to the discovery of a number of niobium oxyiodide cluster compounds. During this…
Chiral phonons in metal-organic frameworks as quantum sensors for the direct detection of dark matter
Marek Matas, Filip Krizek, Carl P. Romao
We investigate a new quantum sensor for dark matter direct detection with sub-eV sensitivity, focusing on several candidate materials that potentially host chiral phonons with larg…
Lattice excitations with finite polarization and magnetization
Mike Pols, Carl P. Romao, Dominik M. Juraschek
Ferrons are a type of quasiparticle corresponding to elementary excitations of the ferroelectric order. Analogously to how magnons modulate and transport magnetization, ferrons mod…
Hubbard dimer physics and the magnetostructural transition in the correlated cluster material NbCl
Alberto Carta, Peter Mlkvik, Fabian Grahlow +5
We present a combined computational and experimental study of NbCl, a correlated layered material containing Nb trimers, through the lens of competing intra- and interclust…
Electronic Structure and Transport in the Potential Luttinger Liquids CsNbBrS and RbNbBrS
Fabian Grahlow, Fabian Strauß, Marcus Scheele +6
The crystal structures of ANbBrS (A = Rb and Cs) have been refined by single crystal X-ray diffraction, and are found to form highly anisotropic materials based on chains o…
Chiral phonons probed by X rays
Hiroki Ueda, Mirian García-Fernández, Stefano Agrestini +5
The concept of chirality is of great relevance in nature, from chiral molecules such as sugar to parity transformations in particle physics. In condensed matter physics, recent stu…
Chiral phonons as dark matter detectors
Carl P. Romao, Riccardo Catena, Nicola A. Spaldin +1
We propose a method for detecting single chiral phonons that will enable their use as dark-matter detectors. We suggest metal--organic frameworks (MOFs) as detector materials, as t…
Anomalous thermal expansion and chiral phonons in BiBO
Carl P. Romao
The origins of anomalous thermal expansion in the chiral monoclinic solid -BiBO have been studied through ab initio calculations. Positive and negative axial thermal…
Origins of anisotropic thermal expansion in flexible materials
Carl P. Romao
A definition of the Grüneisen parameters for anisotropic materials is derived based on the response of phonon frequencies to uniaxial stress perturbations. This Grüneisen model rel…
Crystal nucleation and near-epitaxial growth in nacre
Ian C. Olson, Adam Z. Blonsky, Nobumichi Tamura +2
Nacre is a layered, iridescent lining found inside many mollusk shells, with a unique brick-and-mortar periodic structure at the sub-micron scale, and remarkable resistance to frac…