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Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
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10 papers · 2 filters
Superconductor-insulator quantum phase transition in a single Josephson junction
Carlos P. Herrero, Andrei D. Zaikin
The superconductor-to-insulator quantum phase transition in resistively shunted Josephson junctions is investigated by means of path-integral Monte Carlo simulations. This numerica…
Onset of superconductivity and hysteresis in magnetic field for a long cylinder as obtained from a self-consistent solutions of the Ginzburg--Landau equations
G. F. Zharkov
Based on the self-consistent solution of a nonlinear system of one-dimensional GL-equations, the onset and destruction of superconductivity, the phase transitions and hysteresis ph…
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…
Andreev reflection in Au/La_{2-x}Sr_{x}CuO_{4} point-contact junctions: separation between pseudogap and phase-coherence gap
R. S. Gonnelli, A. Calzolari, D. Daghero +4
We made point-contact measurements with Au tips on La_{2-x}Sr_{x}CuO_{4} samples with 0.08 < x < 0.20 to investigate the relationship between superconducting gap and pseudogap. We…
Energy gap and London penetration depth of MgB_2 films determined by microwave resonator measurement
N. Klein, B. B. Jin, J. Schubert +5
We have measured the temperature dependence of the microwave surface impedance Z_s = R_s + iΩμ_0 of a MgB2 film at a frequency Ω/2Πof 18 GHz employing a dielectric resonator techni…
Temperature and junction-type dependency of Andreev reflection in MgB2
R. S. Gonnelli, A. Calzolari, D. Daghero +6
We studied the voltage and temperature dependency of the dynamic conductance of normal metal-MgB2 junctions obtained either with the point-contact technique (with Au and Pt tips) o…
Josephson current between chiral superconductors
Yu. S. Barash, A. M. Bobkov, M. Fogelstrom
We study chiral interface Andreev bound states and their influence on the Josephson current between clean superconductors. Possible examples are superconducting Sr2RuO4 and the B-p…
Josephson effect in MgB_2 break junctions
R. S. Gonnelli, A. Calzolari, D. Daghero +5
We present the first observation of the DC and AC Josephson effect in MgB_2 break junctions. The junctions, obtained at 4.2 K in high-quality, high-density polycrystalline metallic…
Optical conductivity and penetration depth in MgB2
A. V. Pronin, A. Pimenov, A. Loidl +1
The complex conductivity of a MgB2 film has been investigated in the frequency range 4 cm^{-1}< nu < 30 cm^{-1} and for temperatures 2.7 K < T <300 K. The overall temperature depen…
Evidence for pseudogap and phase-coherence gap separation by Andreev reflection experiments in Au/La_{2-x}Sr_{x}CuO_4 point-contact junctions
R. S. Gonnelli, A. Calzolari, D. Daghero +4
We present new Au/La_{2-x}Sr_{x}CuO_{4} (LSCO) point-contact conductance measures as a function of voltage and temperature in samples with 0.08 <= x <= 0.2. Andreev reflection feat…