Project A02 - Scheer, Belzig

Funding period: 2021 – 2024

Project leaders: Elke Scheer and Wolfgang Belzig

Scientific staff: Oliver Irtenkauf, Lukas Kammermeier, David Ohnmacht, Laura Sobral Rey

Former members: Andreas Bloch, Danilo Nikolic

In this project, we will study the interplay between quantum charge fluctuations and electromagnetic fields. The goal is to elucidate both theoretically and experimentally the role of charge fluctuations in the electronic transport through metallic and superconducting single-electron transistors far away from equilibrium. Experimentally, the nonequilibrium will be induced by microwave irradiation and probed by DC transport measurements at very low temperatures. The theoretical study is performed using a Keldysh real-time Green’s function approach.

List of publications

2023

• Full counting statistics of Yu-Shiba-Rusinov bound states
  D. C. Ohnmacht, W. Belzig, and J. C. Cuevas
  Phys. Rev. Research 5, 033176 – published 11 September 2023
   
• Measurements of Phase Dynamics in Planar Josephson Junctions and SQUIDs
  D. Z. Haxell, E. Cheah, F. Křížek, R. Schott, M. F. Ritter, M. Hinderling, W. Belzig, C. Bruder, W. Wegscheider, H. Riel, and F. Nichele
  Phys. Rev. Lett. 130, 087002 - published 23 February 2023
   
• Calorimetry of a phase slip in a Josephson junction 
  E. Gümüş, D. Majidi, D. Nikolić, P. Raif, B. Karimi, J. T. Peltonen, E. Scheer, J. P. Pekola, H. Courtois, W. Belzig and C. B. Winkelmann
  Nat. Phys.(2023), 1745-2481 - published 6 January 2023

2022

• Non-reciprocity of Vortex-limited Critical Current in Conventional Superconducting Micro-bridges
  D. Suri, A. Kamra, T. N. G. Meier,  M. Kronseder,  W. Belzig,  C. H. Back, and C. Strunk
  Appl. Phys. Lett. 121, 102601 – published 06 September 2022
   
• Engineering the speedup of quantum tunneling in Josephson systems via dissipation
  D. Maile, J. Ankerhold, S. Andergassen, W. Belzig, and G. Rastelli
  Phys. Rev. B 106, 045408 – published 8 July 2022

2021

• Resonator-induced quantum phase transitions in a hybrid Josephson junction
  R. Hussein and W. Belzig
  Phys. Rev. B 104, L180504 – published 15 October 2021
   
• Revealing channel polarization of atomic contacts of ferromagnets and strong paramagnets by shot-noise measurements
  M. W. Prestel, M. Strohmeier, W. Belzig, and E. Scheer
  Phys. Rev. B. 104, 115434 –  published 29 September 2021

Further Publications

• Proximity Effect and Multiple Andreev Reflections in Gold Atomic Contacts

  E. Scheer, W. Belzig, Y. Naveh, M. H. Devoret, D. Esteve, and C. Urbina
  Phys. Rev. Lett. 86, 284 – Published 8 January 2001

• Coulomb Blockade and Multiple Andreev Reflection in a Superconducting Single-Electron Transistor
  T. Lorenz, S. Sprenger, and E. Scheer
  J. Low Temp. Phys. 191, 301-315 - Published 6 December 2017
   
• Dynamical Coulomb Blockade as a Local Probe for Quantum Transport
  J. Senkpiel, J. C. Klöckner, M. Etzkorn, S. Dambach, B. Kubala, W. Belzig, A. L. Yeyati, J. C. Cuevas, F. Pauly, J. Ankerhold, C. R. Ast, and K. Kern
  Phys. Rev. Lett. 124, 156803 – Published 16 April 2020