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5 papers · 1 filter
Matter-field theory of the Casimir force
Masato Koashi, Masahito Ueda
A matter-field theory of the Casimir force is formulated in which the electromagnetic field and collective modes of dielectric media are treated on an equal footing. In our theory,…
Spontaneous Emission Spectrum in Double Quantum Dot Devices
T. Fujisawa, T. H. Oosterkamp, W. G. van der Wiel +4
A double quantum dot device is a tunable two-level system for electronic energy states. A dc electron current directly measures the rates for elastic and inelastic transitions betw…
Observation of Bound Surface States in Grain Boundary Junctions of High Temperature Superconductors
L. Alff, A. Beck, R. Gross +6
We have performed a detailed study of the tunneling spectra of bicrystal grain boundary junctions (GBJs) fabricated from the HTS YBCO, BSCCO, LSCO, and NCCO. In all experiments the…
Superconducting NdCeCuO Bicrystal Grain Boundary Josephson Junctions
S. Kleefisch, L. Alff, U. Schoop +4
We have studied the electric transport properties of symmetrical [001] tilt NdCeCuO bicrystal grain boundary Josephson junctions (GBJs) fabricated on SrTiO bicrystal substrates wit…
shifted magnetoconductance oscillations in mesoscopic superconducting-normal-heterostructures
V. N. Antonov, H. Takayanagi, F. K. Wilhelm +1
Interference of proximity induced superconducting correlations in mesoscopic metallic rings is sensitive to the magnetic flux inside these rings. This is the reason for magneto…