921 citations · 10.1k across the 159 of their papers we have counts for
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Intrinsic charge dynamics in high-Tc AFeAs(O,F) superconductors
A. Charnukha, D. Pröpper, N. D. Zhigadlo +8
We report the first determination of the in-plane complex optical conductivity of 1111 high-Tc superconducting iron oxypnictide single crystals PrFeAsO0.6F0.35 and thin films SmFeA…
Atomic-scale coexistence of short-range magnetic order and superconductivity in FeSeTe
Ramakrishna Aluru, Haibiao Zhou, Antoine Essig +5
The ground state of the parent compounds of many high temperature superconductors is an antiferromagnetically (AFM) ordered phase, where superconductivity emerges when the AFM phas…
Pressure effect on superconductivity in FeSe0.5Te0.5
Sergii I. Shylin, Vadim Ksenofontov, Pavel G. Naumov +8
Due to the simple layered structure, isostructural FeSe and FeSe0.5Te0.5 are clue compounds for understanding the principal mechanisms of superconductivity in the family of Fe-base…
Evidence for Orbital Order and its Relation to Superconductivity in FeSe0.4Te0.6
Udai Raj Singh, Seth C. White, Stefan Schmaus +4
The emergence of nematic electronic states accompanied by a structural phase transition is a recurring theme in many correlated electron materials, including the high-temperature c…
Spatial Inhomogeneity of the Superconducting Gap and Order Parameter in FeSe_{0.4}Te_{0.6}
U. R. Singh, S. C. White, S. Schmaus +4
We have performed a low temperature scanning tunneling microscopy and spectroscopy study of the iron chalcogenide superconductor FeSe_{0.4}Te_{0.6} with T_{C}~14 K. Spatially resol…
Nanoscale layering of antiferromagnetic and superconducting phases in Rb2Fe4Se5
A. Charnukha, A. Cvitkovic, T. Prokscha +10
We studied phase separation in a single-crystalline antiferromagnetic superconductor Rb2Fe4Se5 (RFS) using a combination of scattering-type scanning near-field optical microscopy (…
Interplay between Superconductivity and Magnetism in Rb0.8Fe1.6Se2 under Pressure
Vadim Ksenofontov, Sergey A. Medvedev, Leslie M. Schoop +6
High-pressure magnetization, structural and 57Fe Mössbauer studies were performed on superconducting Rb0.8Fe1.6Se2.0 with Tc = 32.4 K. The superconducting transition temperature gr…
Magnetic Resonant Mode in the Low-Energy Spin-Excitation Spectrum of Superconducting Rb2Fe4Se5 Single Crystals
J. T. Park, G. Friemel, Yuan Li +8
We have studied the low-energy spin-excitation spectrum of the single-crystalline Rb2Fe4Se5 superconductor (Tc = 32 K) by means of inelastic neutron scattering. In the superconduct…
Field cooling memory effect in Bi2212 and Bi2223 single crystals
D. Shaltiel, H-A. Krug von Nidda, B. Rosenstein +8
A memory effect in the Josephson vortex system created by magnetic field in the highly anisotropic superconductors Bi2212 and Bi2223 is demonstrated using microwave power absorptio…
Competition of magnetism and superconductivity in underdoped (Ba1-xKx)Fe2As2
Marianne Rotter, Marcus Tegel, Inga Schellenberg +7
Polycrystalline samples of underdoped (Ba1-xKx)Fe2As2 (x<=0.4) were synthesized and studied by x-ray powder diffraction, magnetic susceptibility, specific heat and 57Fe-Moessbauer-…
Doping dependence of the gap anisotropy in LCCO studied by millimeter-wave spectroscopy
A. V. Pronin, A. Pimenov, A. Loidl +2
We measure the penetration depth of optimally doped and underdoped La2-xCexCuO4 in the millimeter frequency domain (4 - 7 cm-1) and for temperatures 2 K < T < 300 K. The penetratio…
Far-infrared and submillimeter-wave conductivity in electron-doped cuprate La_{2-x}Ce_xCuO_4
A. Pimenov, A. V. Pronin, A. Loidl +2
We performed far-infrared and submillimeter-wave conductivity experiments in the electron-doped cuprate La_{2-x}Ce_xCuO_4 with x = 0.081 (underdoped regime, T_c = 25 K). The onset…
LiBC by polarized Raman spectroscopy: Evidence for lower crystal symmetry ?
J. Hlinka, I. Gregora, J. Pokorny +2
The paper presents polarized Raman scattering study on a few-micron-size crystallite of LiBC with natural faces. The experiment on as grown sample has revealed a four lattice modes…
Superconducting energy gap in MgB2 film observed by infrared reflectance
A. Pimenov, A. Loidl, S. I. Krasnosvobodtsev
Far-infrared reflectance of a MgB2 film has been measured by Fourier-transform spectroscopy for frequencies 10 cm^{-1}<ν<4000 cm^{-1} above and below the superconducting transition…
Magnetic Field Dependence of the Transverse Plasmon in SmLa_0.8Sr_0.2CuO_4
A. Pimenov, A. Loidl, D. Dulic +3
The magnetic field and temperature dependence of the transverse and longitudinal plasmons in SmLa_0.8Sr_0.2CuO_{4-δ} have been measured for frequencies 5 < nu < 30 cm^{-1} and magn…
Submillimeter spectroscopy of tilted Nd_{1.85}Ce_{0.15}CuO_{4-δ} films: observation of a mixed a-c excitation
A. Pimenov, A. V. Pronin, A. Loidl +3
The anisotropic conductivity of a series of tilted Nd_{1.85}Ce_{0.15}CuO_{4-δ} thin films was measured by quasioptical spectroscopy in the frequency range 3cm^{-1}<ν<40cm^{-1}. Two…