Josephson Effect through an Isotropic Magnetic Molecule
نویسندگان
چکیده
منابع مشابه
Josephson effect through an isotropic magnetic molecule.
We study the Josephson effect through a quantum dot magnet whose spin is isotropic and which is coupled to the dot electron spin via exchange coupling. We calculate the Andreev levels and the supercurrent and examine the intertwined effect of the exchange coupling, Kondo correlation, and superconductivity. The former suppresses Kondo correlations, which triggers phase transitions from the 0 to ...
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متن کاملComment on "Josephson current through a nanoscale magnetic quantum dot".
We present theoretical results for the equilibrium Josephson current through an Anderson dot tuned into the magnetic regime, using Hirsch-Fye Monte Carlo simulations covering the complete crossover from Kondo-dominated physics to pi junction behavior in a numerically exact way. Within the "magnetic" regime, U/Gamma >> 1 and epsilon0/Gamma < or = 1, the Josephson current is found to depend only ...
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The modulation with magnetic field of the sheet inductance measured on proximity effect Josephson-junction arrays (JJAs) is progressively vanishing on lowering the temperature, leading to a low-temperature field-independent response. This behaviour is consistent with the decrease of the two-dimensional penetration length below the lattice parameter. Low-temperature data are quantitatively compa...
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There is currently growing interest in small magnetic resonant structures. This interest has been spurred by the demonstration that specific subwavelength structures can exhibit effective magnetic permeability which can be tuned to negative values over a finite frequency range, and by the utilization of these structures to produce a left-handed medium ~LHM! in the microwave regime. Thus LHM has...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2008
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.101.146804