381 citations · 2k across the 74 of their papers we have counts for
44 papers · 1 filter
Superconducting density of states of PtPb4
Pablo García Talavera, Jose Antonio Moreno, Edwin Herrera +5
PtPb is a type II superconductor with a bulk critical temperature K and an upper critical field of T. PtPb is related to non-superconducting…
Role of Nematic Fluctuations on Superconductivity in FeSeTe Revealed by NMR under Pressure
Qing-Ping Ding, Juan Schmidt, Jose A. Moreno +3
The relationship between antiferromagnetic (AFM) spin fluctuations (SF), nematic fluctuations, and superconductivity (SC) has been central to understanding the pairing mechanism in…
Single-gap Isotropic wave Superconductivity in Single Crystals
Sunil Ghimire, Kamal R. Joshi, Elizabeth H. Krenkel +5
London, , and Campbell, , penetration depths were measured in single crystals of a topological superconductor candidate . At low temperatures, $λ…
Anisotropic Paramagnetic Peak Effect in Reversible Magnetization of Crystalline Miassite Superconductor
Ruslan Prozorov, Makariy A. Tanatar, Marcin Kończykowski +5
We report an unusual anisotropic paramagnetic peak effect observed in reversible magnetization of a single crystalline nodal superconductor . Both temp…
Effects of magnetic and non-magnetic doping on the vortex lattice in MgB
E. R. Louden, S. Manni, J. E. Van Zandt +8
Using small-angle neutron scattering we have studied the vortex lattice in superconducting MgB with the magnetic field applied along the -axis, doped with either manganese o…
Lattice-Shifted Nematic Quantum Critical Point in FeSeS
S. Chibani, D. Farina, P. Massat +13
We report the evolution of nematic fluctuations in FeSeS single crystals as a function of Sulfur content across the nematic quantum critical point (QCP) 0…
Analysis of the London penetration depth in Ni-doped CaKFe4As4
D. Torsello, K. Cho, K. R. Joshi +10
We report combined experimental and theoretical analysis of superconductivity in CaK(FeNi)As (CaK1144) for 0, 0.017 and 0.034. To obtain the superfluid dens…
Antiferromagnetic order in CaK(Fe[1-x]Ni[x])4As4 and its interplay with superconductivity
A. Kreyssig, J. M. Wilde, A. E. Böhmer +9
The magnetic order in CaK(Fe[1-x]Ni[x])4As4 (1144) single crystals (x = 0.051 and 0.033) has been studied by neutron diffraction. We observe magnetic Bragg peaks associated to the…
Robust s+/- pairing in CaK[Fe(1-x)Ni(x)]4As4$ (x = 0 and 0.05) from the response to electron irradiation
S. Teknowijoyo, K. Cho, M. Konczykowski +7
Controlled point-like disorder introduced by 2.5 MeV electron irradiation was used to probe the superconducting state of single crystals of \CaKx\ superconductor at and 0.0…
Correlation between Superconductivity and Magnetic Fluctuations in Fe(Se1-xSx) Revealed by 77Se NMR
P. Wiecki, K. Rana, A. E. Böhmer +4
We present Se-NMR measurements on FeSeS samples with sulfur content and . Twinned nematic domains are observed in the NMR spectrum for all sampl…
NMR Study of the New Magnetic Superconductor CaK(Fe$0.951Ni0.049)4As4: Microscopic Coexistence of Hedgehog Spin-vortex Crystal and Superconductivity
Q. -P. Ding, W. R. Meier, A. E. Böhmer +3
Coexistence of a new-type antiferromagnetic (AFM) state, the so-called hedgehog spin-vortex crystal (SVC), and superconductivity (SC) is evidenced by As nuclear magnetic res…
Magnetic fluctuations and superconducting properties of CaKFe4As4 studied by 75As NMR
J. Cui, Q. -P. Ding, W. R. Meier +8
We report As nuclear magnetic resonance (NMR) studies on a new iron-based superconductor CaKFeAs with = 35 K. As NMR spectra show two distinct lin…
Vortex creep at very low temperatures in single crystals of the extreme type-II superconductor RhInS
Edwin Herrera-Vasco, 1 José Benito-Llorens, Udhara S. Kaluarachchi +4
We image vortex creep at very low temperatures using Scanning Tunneling Microscopy (STM) in the superconductor RhInS (=2.25 K). We measure the superconducting gap…
Discovery of Orbital-Selective Cooper Pairing in FeSe
Peter O. Sprau, Andrey Kostin, Andreas Kreisel +7
The superconductor FeSe is of intense interest thanks to its unusual non-magnetic nematic state and potential for high temperature superconductivity. But its Cooper pairing mechani…
Isotope Effect on Electron-Phonon Interaction in Multiband Superconductor MgB2
Daixiang Mou, Soham Manni, Valentin Taufour +5
We investigate the effect of isotope substitution on the electron-phonon interaction in the multi-band superconductor MgB2 using tunable laser based Angle Resolved Photoemission Sp…
Pressure-induced collapsed-tetragonal phase in SrCo2As2
W. T. Jayasekara, U. S. Kaluarachchi, B. G. Ueland +16
We present high-energy x-ray diffraction data under applied pressures up to p = 29 GPa, neutron diffraction measurements up to p = 1.1 GPa, and electrical resistance measurements u…
Antiferromagnetic spin correlations and pseudogap-like behavior in Ca(Fe1-xCox)2As2 studied by 75As nuclear magnetic resonance and anisotropic resistivity
J. Cui, B. Roy, M. A. Tanatar +5
We report As nuclear magnetic resonance (NMR) measurements of single-crystalline Ca(FeCo)As ( = 0.023, 0.028, 0.033, and 0.059) annealed at 350~$^{\ci…
Anisotropy Reversal of the Upper Critical Field at Low Temperatures and Spin-Locked Superconductivity in K2Cr3As3
F. F. Balakirev, T. Kong, M. Jaime +5
We report the first measurements of the anisotropic upper critical field for KCrAs single crystals up to 60 T and K. Our results show that t…
Momentum dependence of the superconducting gap and in-gap states in MgB2 multi-band superconductor
Daixiang Mou, Rui Jiang, Valentin Taufour +3
We use tunable laser based Angle Resolved Photoemission Spectroscopy to study the electronic structure of the multi-band superconductor, MgB2. These results form the base line for…
Strong interaction between electrons and collective excitations in multiband superconductor MgB2
Daixiang Mou, Rui Jiang, Valentin Taufour +7
We use a tunable laser ARPES to study the electronic properties of the prototypical multiband BCS superconductor MgB2. Our data reveal a strong renormalization of the dispersion (k…
The suppression of electron correlations in the collapsed tetragonal phase of CaFe2As2 under ambient pressure demonstrated by 75As NMR-NQR measurements
Y. Furukawa, B. Roy, S. Ran +2
The static and the dynamic spin correlations in the low temperature collapsed tetragonal and the high temperature tetragonal phase in CaFe2As2 have been investigated by 75As nuclea…
Effect of heavy-ion irradiation on London penetration depth in over-doped Ba(Fe,Co)2As2
J. Murphy, M. A. Tanatar, Hyunsoo Kim +7
Irradiation with 1.4 GeV Pb ions was used to induce artificial disorder in single crystals of iron-arsenide superconductor Ba(FeCo)As and to study its e…
Strong Enhancement of the Critical Current at the Antiferromagnetic Transition in ErNi2B2C Single Crystals
M. Weigand, L. Civale, F. J. Baca +4
We report on transport and magnetization measurements of the critical current density Jc in ErNi2B2C single crystals that show strongly enhanced vortex pinning at the Neel temperat…
Angular-dependent upper critical field of overdoped Ba(FeNi)As
J. Murphy, M. A. Tanatar, D. Graf +5
In-plane resistivity measurements as a function of temperature, magnetic field and its orientation with respect to the crystallographic plane were used to study the upper crit…