645 citations · 3.4k across the 50 of their papers we have counts for
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Coupling of magnetic and lattice collective excitations in the 2D van der Waals antiferromagnet FePS
Kartik Panda, Itzik Kapon, Dumitru Dumcenco +3
We combine polarized infrared magneto-transmission and Faraday angle rotation measurements to map the collective excitations of the van der Waals antiferromagnet FePS. Below th…
Signatures of polarized chiral spin disproportionation in rare earth nickelates
Jiarui Li, Robert J. Green, Claribel Domínguez +12
In rare earth nickelates (RENiO), electron-lattice coupling drives a concurrent metal-to-insulator and bond disproportionation phase transition whose microscopic origin has lon…
Optical properties of LaNiO3 films tuned from compressive to tensile strain
I. Ardizzone, M. Zingl, J. Teyssier +11
Materials with strong electronic correlations host remarkable -- and technologically relevant -- phenomena such as magnetism, superconductivity and metal-insulator transitions. Har…
High sensitivity variable-temperature infrared nanoscopy of conducting oxide interfaces
Weiwei Luo, Margherita Boselli, Jean-Marie Poumirol +6
Probing the local transport properties of two-dimensional electron systems (2DES) confined at buried interfaces requires a non-invasive technique with a high spatial resolution ope…
Detailed optical spectroscopy of the hybridization gap and the hidden order transition in high quality URuSi single crystals
N. Bachar, D. Stricker, S. Muleady +4
We present a detailed temperature and frequency dependence of the optical conductivity measured on clean high quality single crystals of URuSi of - and -plane s…
Magnetoplasmon resonances in polycrystalline bismuth as seen via terahertz spectroscopy
Julien Levallois, Piotr Chudzinski, Jason N. Hancock +2
We report the magnetic field-dependent far-infrared reflectivity of polycrystalline bismuth. We observe four distinct absorptions that we attribute to magnetoplasmon resonances, wh…
Optical study of phonons and electronic excitations in tetragonal SrVO
J. Teyssier, R. Viennois, E. Giannini +5
We report on the optical excitation spectra in SrVO. The phonon modes are assigned and their evolution with temperature is discussed in the frame of the different phase tra…
Multi-component magneto-optical conductivity of multilayer graphene on SiC
I. Crassee, J. Levallois, D. van der Marel +3
Far-infrared diagonal and Hall conductivities of multilayer epitaxial graphene on the C-face of SiC were measured using magneto-optical absorption and Faraday rotation in magnetic…
Revealing the high-energy electronic excitations underlying the onset of high-temperature superconductivity in cuprates
Claudio Giannetti, Federico Cilento, Stefano Dal Conte +10
In strongly-correlated systems the electronic properties at the Fermi energy (EF) are intertwined with those at high energy scales. One of the pivotal challenges in the field of hi…
Measurement of magnetic excitations in the two-dimensional antiferromagnetic Sr2CuO2Cl2 insulator using resonant x-ray scattering:Evidence for extended interactions
M. Guarise, B. Dalla Piazza, M. Moretti Sala +13
Using high-resolution resonant inelastic x-ray scattering (RIXS), we performed a momentum-resolved study of magnetic excitations in the model spin-1/2 2D antiferromagnetic insulato…
Strong coupling to magnetic fluctuations in the charge dynamics of Fe-based superconductors
J. N. Hancock, S. I. Mirzaei, J. Gillett +5
We present a comprehensive comparison of the infrared charge response of two systems, characteristic of classes of the 122 pnictide (SrFe2As2) and 11 chalcogenide (Fe_1.087Te) Fe c…
Many-body large polaron optical conductivity in SrTiNbO
J. T. Devreese, S. N. Klimin, J. L. M. van Mechelen +1
Recent experimental data on the optical conductivity of niobium doped SrTiO are interpreted in terms of a gas of large polarons with effective coupling constant $α_{eff}\appr…
Strong energy-momentum dispersion of phonon-dressed carriers in the lightly doped band insulator SrTiO
W. Meevasana, X. J. Zhou, B. Moritz +12
Much progress has been made recently in the study of the effects of electron-phonon (el-ph) coupling in doped insulators using angle resolved photoemission (ARPES), yielding eviden…
Gate tunable charged-phonon effect in bilayer graphene
A. B. Kuzmenko, L. Benfatto, E. Cappelluti +5
We observe a giant increase of the infrared intensity and a softening of the in-plane antisymmetric phonon mode Eu (~0.2 eV) in bilayer graphene as a function of the gate-induced d…
Optical spectra of the heavy fermion uniaxial ferromagnet UGe
V. Guritanu, N. P. Armitage, R. Tediosi +3
We report a detailed study of UGe single crystals using infrared reflectivity and spectroscopic ellipsometry. The optical conductivity suggests the presence of a low frequenc…
Optical evidence for heavy charge carriers in FeGe
V. Guritanu, D. van der Marel, J. Teyssier +4
The optical spectrum of the cubic helimagnetic metal FeGe has been investigated in the frequency range from 0.01 - 3.1 eV for different temperatures from 30 K to 296 K. The optical…
Scaling properties of the optical conductivity of Bi-based cuprates
D. van der Marel, F. Carbone, A. B. Kuzmenko +1
We present novel infrared optical conductivity data on the three layer high Tc superconductor Bi2Sr2Ca2Cu3O10 at optimal doping. We extend the analysis of an earlier publication, p…
Heavy Carriers and Non-Drude Optical Conductivity in MnSi
F. P. Mena, D. van der Marel, M. Faeth +2
Optical properties of the weakly helimagnetic metal MnSi have been determined in the photon energy range from 2 meV to 4.5 eV using the combination of grazing incidence reflectance…
Transverse optical Josephson plasmons, equations of motion
D. van der Marel, A. A. Tsvetkov
A detailed calculation is presented of the dielectric function in superconducttors consisting of two Josephson coupled superconducting layers per unit cell, taking into account the…
Mid-infrared absorption in YBa2Cu3O6: Failure of spin-wave theory in undoped cuprates?
M. Grueninger, D. van der Marel, A. Damascelli +4
The optical conductivity sigma (omega) of undoped YBa2Cu3O6 is studied in detail in the mid-infrared range. Substitutions on all but the Ba site are used to identify the prominent…
Observation of out-of-phase bilayer plasmons in YBa_2Cu_3O_7-delta
M. Grueninger, D. van der Marel, A. A. Tsvetkov +1
The temperature dependence of the c-axis optical conductivity σ(ω) of optimally and overdoped YBa_2Cu_3O_x (x=6.93 and 7) is reported in the far- (FIR) and mid-infrared (MIR) range…
Global and Local Measures of the Intrinsic Josephson Coupling in Tl2Ba2CuO6
A. A. Tsvetkov, D. van der Marel, K. A. Moler +12
The Intlerlayer Josephson coupling between the planes of Tl2Ba2CuO6 was determined using infrared spectroscopy and magnetic flux vortex imaging. These methods give a consistent val…
Experimental Test of the Inter-Layer Pairing Models for High-Tc Superconductivity Using Grazing Incidence Infrared Reflectometry
J. Schutzmann, H. S. Somal, A. A. Tsvetkov +7
From measurements of the far-infrared reflectivity at grazing angles of incidence with p-polarized light we determined the c-axis Josephson plasma frequencies of the single layer h…