88 citations · 295 across the 21 of their papers we have counts for
21 papers
Collapse of Jahn-Teller Phonons in LaSrMnO with Weak Magnetoresistance
Tyler C. Sterling, Andrei T. Savici, Ryoichi Kajimoto +4
Perovskite manganites are quantum materials exhibiting competing interactions inducing colossal magnetoresistance (CMR). The prevailing theory of CMR highlights the essential role…
Phonons reflect dynamic spin-state order in LaCoO
Alsu Ivashko, Taishun Manjo, Maximilian Kauth +17
We investigate lattice dynamics in LaCoO using inelastic neutron and x-ray scattering over $T = 2\mbox{-}650\,\mathrm{K}$, spanning the spin-state crossover at $T_{1} \approx 1…
Soft phonon and the central peak at the cubic-to-tetragonal phase transition in SrTiO
Avishek Maity, Klaus Habicht, Michael Merz +8
The continuous displacive phase transition in SrTiO near K features a central elastic peak in neutron scattering investigations at temperatures above , i…
Charge-density-wave quantum critical point under pressure in 2-TaSe
Yuliia Tymoshenko, Amir-Abbas Haghighirad, Rolf Heid +13
Suppressing of an ordered state that competes with superconductivity is one route to enhance superconducting transition temperatures. Whereas the effect of suppressing magnetic sta…
Phonon density of states in lanthanide-based nanocrystals
Z. H. Li, D. Hudry, R. Heid +10
We report a combined inelastic neutron and X-ray scattering study of the phonon density of states of the nano- and microcrystalline lanthanide-based materials NaYYb$_{0.18}…
Soft elastic constants from phonon spectroscopy in hole-doped Ba(K,Na)FeAs and Sr_x_2_2$
M. Kauth, S. Rosenkranz, A. H. Said +3
We report inelastic x-ray scattering measurements of the in-plane polarized transverse acoustic phonon mode propagating along [100] in various hole-doped compounds belo…
Dominant in-plane symmetric elastoresistance in CsFe2As2
P. Wiecki, A. -A. Haghighirad, F. Weber +3
We study the elastoresistance of the highly correlated material CsFe2As2 in all symmetry channels. Neutralizing its thermal expansion by means of a piezoelectric-based strain cell…
Nematic correlation length in iron-based superconductors probed by inelastic x-ray scattering
A. M. Merritt, F. Weber, J. -P. Castellan +7
Nematicity is ubiquitous in electronic phases of high- superconductors, particularly in the Fe-based systems. We used inelastic x-ray scattering to extract the temperature-dep…
Electron-phonon coupling and superconductivity-induced distortion of the phonon lineshape in VSi
A. Sauer, D. A. Zocco, A. H. Said +3
Phonon measurements in the A15-type superconductors were complicated in the past because of the unavailability of large single crystals for inelastic neutron scattering, e.g., in t…
Soft phonons reveal the nematic correlation length in Ba(FeCo)As
F. Weber, D. Parshall, L. Pintschovius +8
Nematicity is ubiquitous in electronic phases of high- superconductors, particularly in the Fe-based systems. While several experiments have probed nematic fluctuations, they…
Polaronic correlations and phonon renormalization in La1-xSrxMnO3 (x = 0.2, 0.3)
M. Maschek, J. -P. Castellan, D. Lamago +2
According to standard theory the magnetoresistance magnitude in ferromagnetic manganites crucially depends on the electron-phonon coupling strength. We showed that in La0.7Sr0.3MnO…
Magnetic and structural quantum phase transitions in CeCu6-xAux are independent
K. Grube, L. Pintschovius, F. Weber +9
The heavy-fermion compound CeCuAu has become a model system for unconventional magnetic quantum criticality. For small Au concentrations , the compound…
Superconducting energy gap of -NbSe in phonon spectroscopy
F. Weber, S. Rosenkranz, R. Heid +1
We present a high energy-resolution inelastic x-ray scattering data investigation of the charge-density-wave (CDW) soft phonon mode upon entering the superconducting state in -…
Finite-momentum nematic fluctuations soften phonons in the superconducting state of Ba(FeCo)As
F. Weber, D. Parshall, L. Pintschovius +6
Nematic order is ubiquitous in liquid crystals and is characterized by a rotational symmetry breaking in an otherwise uniform liquid. Recently a similar phenomenon has been observe…
Lattice dynamical properties of superconducting SrPtP studied via inelastic x-ray scattering and density functional perturbation theory
D. A. Zocco, S. Krannich, R. Heid +5
We present a study of the lattice dynamical properties of superconducting SrPtP ( K) via high-resolution inelastic x-ray scattering (IXS) and ab initio calculations.…
Absence of spin-orbit-coupling-induced effects on lattice dynamics in CePt3Si
S. Krannich, D. Lamago, D. Manske +5
Motivated by model calculations for the heavy fermion superconductor CePt3Si predicting phonon anomalies because of anti-symmetric spin-orbit coupling we performed a detailed exper…
Wave vector dependent electron-phonon coupling drives charge-density-wave formation in TbTe3
M. Maschek, S. Rosenkranz, R. Heid +4
We present a high energy-resolution inelastic x-ray scattering investigation of the soft phonon mode in the charge-density-wave system TbTe. We analyze our data based on lattic…
Large lattice distortions associated with the magnetic transition in La0.7Sr0.3MnO3
F. Weber, D. Argyriou, O. Prokhnenko +1
Colossal magnetoresistance (CMR) is associated with the phase transition from a metallic ferromagnetic to insulating paramagnetic phase, which can be controlled by an applied magne…
Phonon lineshapes in the vortex state of the phonon-mediated superconductor YNiBC
F. Weber, L. Pintschovius, K. Hradil +1
We present an inelastic neutron scattering study of phonon lineshapes in the vortex state of the type-II superconductor YNiBC. In a previous study [Phys. Rev. Lett. \textbf…
d-d Excitations in Bilayer Manganites Probed by Resonant Inelastic X-ray Scattering
F. Weber, S. Rosenkranz, J. -P. Castellan +6
We report a high resolution resonant inelastic x-ray scattering investigation of the bilayer manganites LaSrMnO with and . The momentum de…
Direct observation of the superconducting gap in phonon spectra
F. Weber, A. Kreyssig, L. Pintschovius +5
We show that the superconducting energy gap can be directly observed in phonon spectra, as predicted by recent theories. In addition, since each phonon probes the gap on only a…