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Nonmonotonic temperature dependence of the thermopower of atomic-size gold contacts
Thomas B. Möller, Marcel Strohmeier, Johannes Boneberg +3
We report measurements of the thermopower of atomic-size gold contacts realized by the mechanically controllable break junction (MCBJ) technique over a temperature range from 18 K…
Spin-polarized transport in copper-oxide atomic junctions revealed by anomalous shot-noise behavior in presence of the Kondo effect
Marcel Strohmeier, Samanwita Biswas, Wolfgang Belzig +2
Noise measurements provide a valuable tool for revealing spin polarization effects in the electronic transport through quantum coherent conductors. We present an extension of the L…
Theory of three-terminal Andreev spin qubits
Kiryl Piasotski, Aleksandr Svetogorov, Wolfgang Belzig +1
In this paper, we introduce a concise theoretical framework for the equilibrium three-terminal Josephson effect in spin-orbit-interacting systems, inspired by recent experiments on…
The Andreev-Ising-Josephson Diode
Sourabh Patil, Gaomin Tang, Wolfgang Belzig
The transition-metal dichalcogenides featuring Ising spin-orbit coupling in so-called Ising superconductors offer a unique system to study the interplay of singlet and triplet supe…
Superconductivity of alpha-gallium probed on the atomic scale by normal and Josephson tunneling
C. Fohn, D. Wander, D. Nikolic +6
We investigate superconducting gallium in its phase using scanning tunneling microscopy and spectroscopy at temperatures down to about 100 mK. High-resolution tunneling spectro…
Electrical detectability of magnon-mediated spin current shot noise
Luise Siegl, Michaela Lammel, Akashdeep Kamra +3
A magnonic spin current crossing a ferromagnet-metal interface is accompanied by spin current shot noise arising from the discrete quanta of spin carried by magnons. In thin films,…