251 citations · 1.1k across the 33 of their papers we have counts for
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Bogoliubov Quasiparticle on the Gossamer Fermi Surface in Electron-Doped Cuprates
Ke-Jun Xu, Qinda Guo, Makoto Hashimoto +14
In contrast to hole-doped cuprates, electron-doped cuprates consistently exhibit strong antiferromagnetic correlations with a commensurate (π, π) ordering wave vector, leading to t…
Superconducting properties of the spin Hall candidate Ta3Sb with eightfold degeneracy
R. Chapai, A. Rydh, M. P. Smylie +7
We report the synthesis and characterization of phase pure Ta3Sb, a material predicted to be topological with eightfold degenerate fermionic states [Science 353, aaf5037 (2016)] an…
Quartic metal: Spontaneous breaking of time-reversal symmetry due to four-fermion correlations in BaKFeAs
Vadim Grinenko, Daniel Weston, Federico Caglieris +19
Discoveries of ordered quantum states of matter are of great fundamental interest, and often lead to unique applications. The most well known example -- superconductivity -- is cau…
Unusual interplay between superconductivity and field-induced charge order in YBa2Cu3Oy
J. Kacmarcik, I. Vinograd, B. Michon +12
We present a detailed study of the temperature (T) and magnetic field (H) dependence of the electronic density of states (DOS) at the Fermi level, as deduced from specific heat and…
Anisotropic superconductivity and magnetism in single-crystal RbEuFeAs
M. P. Smylie, K. Willa, J. -K. Bao +11
We investigate the anisotropic superconducting and magnetic properties of single-crystal RbEuFeAs using magnetotransport and magnetization measurements. We determine a magn…
Raising the superconducting of gallium: in-situ characterization of the transformation of -Ga into -Ga
D. Campanini, Z. Diao, A. Rydh
Gallium (Ga) displays several metastable phases. Superconductivity is strongly enhanced in the metastable -Ga with a critical temperature $T_\mathrm{c}= 6.04(5)\,\mathrm{…
Superconducting gap evolution in overdoped BaFe(AsP) single crystals through nanocalorimetry
D. Campanini, Z. Diao, L. Fang +3
We report on specific heat measurements on clean overdoped single crystals performed with a high resolution membrane-based nanocalorimeter. A non…
Microscopic Parameters from High-Resolution Specific Heat Measurements on Overdoped BaFe(AsP) Single Crystals
Z. Diao, D. Campanini, L. Fang +3
We investigate the electronic specific heat of overdoped BaFe(AsP) single crystals in the superconducting state using high-resolution nanocalorimetry. Fro…
Evidence for nonlocal electrodynamics in planar Josephson junctions
A. A. Boris, A. Rydh, T. Golod +3
We study temperature dependence of the critical current modulation Ic(H) for two types of planar Josephson junctions: a low-Tc Nb/CuNi/Nb and a high-Tc YBa2Cu3O7 bicrystal grain-bo…
Photoconductivity effects in mixed-phase BSCCO whiskers
Marco Truccato, Dario Imbraguglio, Angelo Agostino +4
We report on combined photoconductivity and annealing experiments in whisker-like crystals of the Bi-Sr-Ca-Cu-O (BSCCO) high-Tc superconductor. Both single-phase Bi2Sr2CaCu2O8+δ(Bi…
Strong polaritonic interaction between flux-flow and phonon resonances in Bi2Sr2CaCu2O8+x intrinsic Josephson junctions: Angular dependence and the alignment procedure
Holger Motzkau, Sven-Olof Katterwe, Andreas Rydh +1
Bi2Sr2CaCu2O8+x single crystals represent natural stacks of atomic scale intrinsic Josephson junctions, formed between metallic CuO2-Ca-CuO2 and ionic insulating SrO-2BiO-SrO layer…
Disparity of superconducting and pseudogap scales in low-Tc Bi-2201 cuprates
Th. Jacobs, S. O. Katterwe, H. Motzkau +7
We experimentally study transport and intrinsic tunneling characteristics of a single-layer cuprate Bi(2+x)Sr(2-y)CuO(6+delta) with a low superconducting critical temperature Tc <…
Persistent electrical doping of Bi2Sr2CaCu2O8+x mesa structures
Holger Motzkau, Thorsten Jacobs, Sven-Olof Katterwe +2
Application of a significantly large bias voltage to small Bi2Sr2CaCu2O8+x mesa structures leads to persistent doping of the mesas. Here we employ this effect for analysis of the d…
Size-dependent transformation from triangular to rectangular fluxon lattice in Bi-2212 mesa structures
Holger Motzkau, Sven-Olof Katterwe, Andreas Rydh +1
We present a systematic study of the field and size dependencies of the static fluxon lattice configuration in Bi-2212 intrinsic Josephson junctions and investigate conditions need…
Comparative analysis of tunneling magnetoresistance in low- Nb/AlAlOx/Nb and high- BiPbSrCaCuO intrinsic Josephson junctions
V. M. Krasnov, H. Motzkau, T. Golod +3
We perform a detailed comparison of magnetotunneling in conventional low- Nb/AlAlOx/Nb junctions with that in slightly overdoped BiPbSrCaCuO [Bi(Pb…
Anisotropic Phase Diagram and Superconducting Fluctuations in SmFeAsO0.85F0.15
U. Welp, C. Chaparro, A. E. Koshelev +5
We report on the specific heat determination of the anisotropic phase diagram of single crystals of optimally doped SmFeAsO1-xFx. In zero-field, the optimally doped compound displa…
Observation of polaritons in Bi2Sr2CaCu2O8+x single crystals
Sven-Olof Katterwe, Holger Motzkau, Andreas Rydh +1
The Bi2Sr2CaCu2O8+x high-temperature superconductor represents a natural metamaterial, composed of metallic CuO bilayers sandwiched between ionic BiO planes. Each pair of CuO bilay…
Detection of the phase shift from a single quantized superconducting vortex
Taras Golod, Andreas Rydh, Vladimir M. Krasnov
An Abrikosov vortex in a superconductor carries a flux quantum, Phi_0 = hc/2e, localized at its center, but induces a global 2pi phase rotation in the superconducting condensate. T…
Crossover from Thermal Activation to Quantum Interlayer Transport at the Superconducting Transition Temperature of Bi-2212
S. O. Katterwe, A. Rydh, V. M. Krasnov
We perform a detailed study of temperature, bias and doping dependance of interlayer transport in the layered high temperature superconductor BiSrCaCuO. We obse…
Two-band Effects in the Angular Dependence of Hc2 of MgB2 Single Crystals
A. Rydh, U. Welp, A. E. Koshelev +11
The angular dependence of the upper critical field Hc2 of MgB2 single crystals is studied at various temperatures by means of specific heat and transport measurements in magnetic f…
Surface Contribution to the Superconducting Properties of MgB2 Single Crystals
A. Rydh, U. Welp, J. M. Hiller +8
We demonstrate direct evidence of possible surface superconductivity on small, well-shaped MgB2 single crystals. Transport measurements in the range H < 1.6 Hc2^c, where Hc2^c is t…
Superconducting Transition and Phase Diagram of Single Crystal MgB2
U. Welp, G. Karapetrov, W. K. Kwok +10
The superconducting phase diagram of MgB2 was determined from magnetization, magneto-transport and the first single-crystal specific heat measurements. A zero-temperature in-plane…