194 citations · 948 across the 36 of their papers we have counts for
37 papers
Selective coupling of coherent phonons to intertwined charge-orbital and magnetic orders in doped manganites
X. Liu, M. Sander, S. -W. Huang +15
Strongly correlated materials feature technologically relevant functionalities such as high-temperature superconductivity and colossal magnetoresistance, which emerges from the com…
Large magnon dichroism and other optical properties of hexagonal ferrite h-Lu0.6Sc0.4FeO3 with altermagnetic A2 spin ordering
V. A. Martinez, A. A. Sirenko, L. Bugnon +8
Multiferroic hexagonal h-Lu0.6Sc0.4FeO3 single crystals with non-collinear spins were studied using the THz and Raman scattering spectroscopies and ellipsometry. Antiferromagnetic…
Dynamics of surface electrons in a topological insulator: cyclotron resonance at room temperature
I. Mohelsky, F. Le Mardele, J. Dzian +13
The ability to manipulate the surface states of topological insulators using electric or magnetic fields under ambient conditions is a key step toward their integration into future…
Spectroscopic signatures of magnetization-induced band renormalization and strong spin-charge-lattice coupling in EuZnAs
Zhiyu Liao, Boxuan Li, Shaohui Yi +9
We report an infrared spectroscopy study of the antiferromagnetic (AFM) insulator EuZnAs over a broad frequency range, spanning temperatures both above and below the AFM tr…
Broad-band ellipsometry study of the anisotropic dielectric response of YAlO3
Laurent Bugnon, Christian Bernhard, Premysl Marsik
We present a broad band (THz to UV) ellipsometry study of the anisotropic dielectric response of the orthorhombic perovskite YAlO3. The ellipsometric measurements have been perform…
Infrared ellipsometry study of the charge dynamics in K3p-terphenyl
Qi He, P. Marsik, F. Le Mardelé +8
We report an infrared ellipsometry study of the charge carrier dynamics in polycrystalline Kxp-terphenyl samples with nominal , for which signatures of high-temperature superc…
Non-collinear and strongly asymmetric polar moments at back-gated SrTiO3 interfaces
Fryderyk Lyzwa, Yurii G. Pashkevich, Premysl Marsik +15
The highly mobile electrons at the interface of SrTiO3 with other oxide insulators, such as LaAlO3 or AlOx, are of great current interest. A vertical gate voltage allows controllin…
Electron-Phonon Coupling and Electron-Phonon Scattering in SrVO
Mathieu Mirjolet, Francisco Rivadulla, Premysl Marsik +3
Understanding the physics of strongly correlated electronic systems has been a central issue in condensed matter physics for decades. In transition metal oxides, strong correlation…
Infrared study of the interplay of charge, spin, and lattice excitations in the magnetic topological insulator EuInAs
B. Xu, P. Marsik, S. Sarkar +4
We report an infrared spectroscopy study of the axion topological insulator candidate EuInAs for which the Eu moments exhibit an A-type antiferromagnetic (AFM) order below…
Infrared study of the multiband low-energy excitations of the topological antiferromagnet MnBiTe
Bing Xu, Y. Zhang, E. H. Alizade +14
With infrared spectroscopy we studied the bulk electronic properties of the topological antiferromagnet MnBiTe with . With the support of band str…
Total angular momentum dichroism of the terahertz vortex beams at the antiferromagnetic resonances
A. A. Sirenko, P. Marsik, L. Bugnon +4
Terahertz vortex beams with different superposition of the orbital angular momentum , , , and and spin angular momentum were used to s…
Muon spin rotation and infrared spectroscopy study of
E. Sheveleva, B. Xu, P. Marsik +8
The magnetic and superconducting properties of a series of underdoped (BNFA) single crystals with has been investigated with the…
Superconductivity-induced transverse plasma mode and phonon anomaly in the -axis response of the bilayer compound RbCaFeAsF
B. Xu, D. Munzar, A. Dubroka +7
With infrared spectroscopy we studied the out-of-plane (-axis) response of the iron arsenide superconductor ACaFeAsF (A = Rb,Cs) which has a bilayer structure si…
Optical Signature of a Crossover from Mott- to Slater-type Gap in SrIrRhO
B. Xu, P. Marsik, E. Sheveleva +5
With optical spectroscopy we provide evidence that the insulator-metal transition in SrIrRhO occurs close to a crossover from the Mott- to the Slater-type.…
Infrared spectroscopy study of the in-plane response of YBa2Cu3O6.6 in magnetic fields up to 30 Tesla
F. Lyzwa, B. Xu, P. Marsik +4
With Terahertz and Infrared spectroscopy we studied the in-plane response of an underdoped YBa2Cu3O6.6 single crystal with Tc=58(1) K in high magnetic fields up to B=30 Tesla appli…
Band-selective clean- and dirty-limit superconductivity with nodeless gaps in the bilayer iron-based superconductor CsCaFeAsF
B. Xu, Z. C. Wang, E. Sheveleva +4
The optical properties of the new iron-based superconductor CsCaFeAsF with ~K have been determined. In the normal state a good description of the low-f…
Temperature-driven Topological Phase Transition and Intermediate Dirac Semimetal Phase in ZrTe
B. Xu, L. X. Zhao, P. Marsik +6
We present an infrared spectroscopy study of ZrTe, which confirms a recent theoretical proposal that this material exhibits a temperature-driven topological quantum phase trans…
Scaling of the Fano effect of the in-plane Fe-As phonon and the superconducting critical temperature in BaKFeAs
B. Xu, E. Cappelluti, L. Benfatto +11
By means of infrared spectroscopy we determine the temperature-doping phase diagram of the Fano effect for the in-plane Fe-As stretching mode in BaKFeAs.…
Terahertz-Driven Phonon Upconversion in SrTiO3
Michael Kozina, Michael Fechner, Premysl Marsik +8
Direct manipulation of the atomic lattice using intense long-wavelength laser pulses has become a viable approach to create new states of matter in complex materials. Conventionall…
Optical study of Dirac fermions and related phonon anomalies in antiferromagnetic compound CaFeAsF
B. Xu, H. Xiao, B. Gao +8
We performed optical studies on CaFeAsF single crystals, a parent compound of the 1111-type iron-based superconductors that undergoes a structural phase transition from tetragonal…
In situ monitoring of atomic layer epitaxy via optical ellipsometry
Fryderyk Lyzwa, Premysl Marsik, Vladimir Roddatis +3
We report on the use of time-resolved optical ellipsometry to monitor the deposition of single atomic layers with subatomic sensitivity. Ruddlesden-Popper thin films of SrO(SrTiO3)…
Superconductivity and charge carrier localization in ultrathin bilayers
K. Sen, P. Marsik, S. Das +6
/ (LSCO15/LCO) bilayers with a precisely controlled thickness of N unit cells (UCs) of the former and M UCs of the latter ([LS…
Infrared ellipsometry study of the photo-generated charge carriers at the (001) and (110) surfaces of SrTiO crystals and the interface of corresponding LaAlO/SrTiO heterostructures
M. Yazdi-Rizi, P. Marsik, B. P. P. Mallett +7
With infrared (IR) ellipsometry and DC resistance measurements we investigated the photo-doping at the (001) and (110) surfaces of SrTiO (STO) single crystals and at the corres…
Local Terahertz Field Enhancement for Time-Resolved X-ray Diffraction
Michael Kozina, Matteo Pancaldi, Christian Bernhard +9
We report local field strength enhancement of single-cycle terahertz (THz) pulses in an ultrafast time-resolved x-ray diffraction experiment. We show that patterning the sample wit…