Zobrazeno 1 - 10
of 669
pro vyhledávání: '"Beckmann, D."'
Autor:
Maier, P., Beckmann, D.
We report on an experimental investigation of the combined effect of nonequilibrium quasiparticle injection and supercurrent in superconducting aluminum wires. At low temperature, we observe the supercurrent-induced coupling of energy and charge imba
Externí odkaz:
http://arxiv.org/abs/2211.10120
We report an experimental study on the tuning of supercurrent in a ballistic graphene-based Josephson junction by applying a control voltage to a transverse normal channel. In this four-terminal geometry, the control voltage changes the occupation of
Externí odkaz:
http://arxiv.org/abs/2206.13799
We present a combined experimental and theoretical work that investigates the magnetic proximity effect at a ferromagnetic-insulator - superconductor (FI-S) interface. The simulation is based on the boundary condition for diffusive quasiclassical Gre
Externí odkaz:
http://arxiv.org/abs/2203.09951
Publikováno v:
Phys. Rev. Lett. 126, 147701 (2021)
We report an experimental study of Cooper pair splitting in an encapsulated graphene based multiterminal junction in the ballistic transport regime. Our device consists of two transverse junctions, namely the superconductor/graphene/superconductor an
Externí odkaz:
http://arxiv.org/abs/2005.09580
Publikováno v:
Phys. Rev. B 100, 165416 (2019)
We report the study of ballistic transport in normal metal/graphene/superconductor junctions in edge-contact geometry. While in the normal state, we have observed Fabry-P\'{e}rot resonances suggesting that charge carriers travel ballistically, the su
Externí odkaz:
http://arxiv.org/abs/1907.13581
Autor:
Heidrich, J., Beckmann, D.
Publikováno v:
Phys. Rev. B 100, 134501 (2019)
We report on the experimental observation of nonlocal spin-dependent thermoelectric effects in superconductor-ferromagnet multiterminal structures. Our samples consist of a thin superconducting aluminum wire with several ferromagnetic tunnel junction
Externí odkaz:
http://arxiv.org/abs/1907.08441
Publikováno v:
Phys. Rev. B 95, 224505 (2017)
We report on large thermoelectric effects in superconductor-ferromagnet tunnel junctions in proximity contact with the ferromagnetic insulator europium sulfide. The combination of a spin-splitting field and spin-polarized tunnel conductance in these
Externí odkaz:
http://arxiv.org/abs/1704.07241
Thermoelectric effects result from the coupling of charge and heat transport, and can be used for thermometry, cooling and harvesting of thermal energy. The microscopic origin of thermoelectric effects is a broken electron-hole symmetry, which is usu
Externí odkaz:
http://arxiv.org/abs/1604.01940
Publikováno v:
Phys. Rev. Lett. 116, 097001 (2016)
We report on the experimental observation of thermoelectric currents in superconductor-ferromagnet tunnel junctions in high magnetic fields. The thermoelectric signals are due to a spin-dependent lifting of particle-hole symmetry, and are found to be
Externí odkaz:
http://arxiv.org/abs/1509.05568
Publikováno v:
Phys. Rev. B 90, 144509 (2014)
We report on nonlocal spin transport in mesoscopic superconducting aluminum wires in contact with the ferromagnetic insulator europium sulfide. We find spin injection and long-range spin transport in the regime of the exchange splitting induced by eu
Externí odkaz:
http://arxiv.org/abs/1408.0176