|Contact E-mail: ruben.seoane[at]csic.es Materials Science Institute of Madrid, CSIC |

Rubén seoane souto - Theoretical nanophysics

Materials Science institute of Madrid
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Preprints

  1. Probing Majorana localization of a phase-controlled three-site Kitaev chain with an additional quantum dot
    A. Bordin, F. J. Bennebroek Evertsz', B. Roovers, J. D. Torres Luna, W. D. Huisman, F. Zatelli, G. P. Mazur, S. L. D. ten Haaf, G. Badawy, E. P. A. M. Bakkers, C.-X. Liu, R. Seoane Souto, N. van Loo, and L. P. Kouwenhoven
    arXiv:2504.13702 (2025).
  2. Biharmonic-drive tunable Josephson diode
    L. Borgongino, R. Seoane Souto, A. Paghi, G. Senesi, K. Skibinska, L. Sorba, F. Giazotto, and E. Strambini
    arXiv:2504.08691 (2025).
  3. Flux-tunable parity-protected qubit based on a single full-shell nanowire Josephson junction
    G. Giavaras, R. Seoane Souto, M. J. Calderon, and R. Aguado
    arXiv:2503.05284 (2025).
  4. Majorana sweet spots in 3-site Kitaev chains
    R. A. Dourado, M. Leijnse, R. Seoane Souto
    arXiv:2502.19267 (2025).
  5. Theory of superconducting proximity effect in hole-based hybrid semiconductor-superconductor devices
    D. M. Pino, R. Seoane Souto, M. J. Calderón, R. Aguado, and J. C. Abadillo-Uriel
    arXiv:2501.00088 (2025).
  6. The poor man's Majorana tetron
    M. Nitsch, L. Maffi, V. V. Baran, R. Seoane Souto, J. Paaske, M. Leijnse, and M. Burrello
    arXiv:2411.11981 (2024).
  7. Impurity States in Altermagnetic Superconductors
    A. Maiani and R. Seoane Souto
    arXiv:2409.01008 (2024).
  8. Percolative supercurrent in superconductor-ferromagnetic insulator bilayers
    A. Maiani, A. C. C. Drachmann, L. Galletti, C. Schrade, Y. Liu, R. Seoane Souto, and S. Vaitiekėnas
    arXiv:2404.17320 (2024).
  9. Mobile Topological Su-Schrieffer-Heeger Soliton in a Josephson Metamaterial
    D. Kuzmanovski, R. Seoane Souto, P. J. Wong, and A. V Balatsky
    arXiv:2312.03456 (2023).

Publications

    2025

  1. Majorana modes in quantum dots coupled via a floating superconducting island
    R. Seoane Souto, V. V. Baran, M. Nitsch, L. Maffi, J. Paaske, M. Leijnse, and M. Burrello
    arXiv:2411.07068 (2024) [Accepted in Phys. Rev. B].
  2. Subgap-state-mediated transport in superconductor--semiconductor hybrid islands: Weak and strong coupling regimes
    M. Valentini, R. Seoane Souto, M. Borovkov, P. Krogstrup, Y. Meir, M. Leijnse, J. Danon, Georgios Katsaros
    arXiv:2407.05195 (2024) [Accepted in Phys. Rev. Research].
  3. Tunable diode effect in a superconducting tunnel junction with biharmonic drive
    D. Scheer, R. Seoane Souto, F. Hassler, and J. Danon
    New J. Phys. 27 033013 (2025).

    4. 2024

  4. Interplay between Majorana and Shiba states in a minimal Kitaev chain coupled to a superconductor
    M. Alvarado, A. Levy Yeyati, R. Aguado, and R. Seoane Souto
    Phys. Rev. B 110, 245144 (2024).
  5. Machine-learned tuning of artificial Kitaev chains from tunneling-spectroscopy measurements
    J. Benestad, A. Tsintzis, R. Seoane Souto, M. Leijnse, E. van Nieuwenburg, and J. Danon
    Phys. Rev. B 110, 075402 (2024).
  6. Topological superconductivity in a magnetic-texture coupled Josephson junction
    I. Sardinero, R. Seoane Souto, and P. Burset
    Phys. Rev. B 110, L060505 (2024).
  7. A fermion-parity qubit in a proximitized double quantum dot
    M. Geier, R. Seoane Souto, J. Schulenborg, S. Asaad, M. Leijnse, and K. Flensberg
    Phys. Rev. Research 6, 023281 (2024).
  8. P-wave pairing near a spin-split Josephson junction
    R. Seoane Souto, D. Kuzmanovski, I. Sardinero, P. Burset, and A. V. Balatsky
    J. Low Temp. Phys., 217, 106 (2024).
  9. Tuning the Josephson diode response with an ac current
    R. Seoane Souto, M. Leijnse, C. Schrade, M. Valentini, G. Katsaros, and J. Danon
    Phys. Rev. Research 6, L022002 (2024).
  10. Transport-based fusion that distinguishes between Majorana and Andreev bound states
    M. Nitsch, R. Seoane Souto, S. Matern, and M Leijnse
    Phys. Rev. B 109, 165404 (2024).
  11. Majorana Qubits and Non-Abelian Physics in Quantum Dot–Based Minimal Kitaev Chains
    A. Tsintzis*, R. Seoane Souto*, K. Flensberg, J. Danon, and M. Leijnse (*equal author contribution)
    Phys. Rev. X Quantum 5, 010323 (2024).
  12. Minimal Kitaev-transmon qubit based on double quantum dots
    D. M. Pino, R. Seoane Souto, and R. Aguado
    Phys. Rev. B 109, 075101 (2024).
  13. Supercurrent transport through 1-e periodic full-shell Coulomb islands
    D. Razmadze*, R. Seoane Souto*, E. C. T. O'Farrell, P. Krogstrup, M. Leijnse, C. M. Marcus, and S. Vaitiekėnas (*equal author contribution)
    Phys. Rev. B 109, L041302 (2024).
  14. Parity-conserving Cooper-pair transport and ideal superconducting diode in planar Germanium
    M. Valentini, O. Sagi, L. Baghumyan, T. de Gijsel, J. Jung, S. Calcaterra, A. Ballabio, J. Aguilera Servin, K. Aggarwal, M. Janik, T. Adletzberger, R. Seoane Souto, M. Leijnse, J. Danon, C. Schrade, E. Bakkers, D. Chrastina, G. Isella, and G. Katsaros
    Nat. Commun. 15, 169 (2024).

    15. 2023

  15. Josephson junction π-0 transition induced by orbital hybridization in a double quantum dot
    R. Debbarma, A. Tsintzis, M. Aspegren, R. Seoane Souto, S. Lehmann, K. Dick, M. Leijnse, and C. Thelander
    Phys. Rev. Lett. 131, 256001 (2023).
  16. Probing Majorana localization in minimal Kitaev chains through a quantum dot
    R. Seoane Souto, A. Tsintzis, M. Leijnse, and J. Danon
    Phys. Rev. Research 5, 043182 (2023).
  17. DC Josephson effect between two Yu-Shiba-Rusinov bound states
    S. Chakraborty, D. Nikolić, R. Seoane Souto, W. Belzig, and J. C. Cuevas
    Phys. Rev. B 108, 094518 (2023).
  18. Nonsinusoidal current-phase relations in semiconductor-superconductor-ferromagnetic insulator devices
    A. Maiani, K. Flensberg, M. Leijnse, C. Schrade, S. Vaitiekėnas, and R. Seoane Souto
    Phys. Rev. B 107 245415 (2023).
  19. Supercurrent reversal in ferromagnetic hybrid nanowire Josephson junctions
    D. Razmadze*, R. Seoane Souto*, L. Galletti, A. Maiani, Y. Liu, P. Krogstrup, C. Schrade, A. Gyenis, C. M. Marcus, and S.Vaitiekėnas (*equal author contribution)
    Phys. Rev. B 107, L081301 (2022).

    20. 2022

  20. The Josephson diode effect in supercurrent interferometers
    R. Seoane Souto M. Leijnse, and C. Schrade
    Phys. Rev. Lett. 129, 267702 (2023).
  21. Multiterminal transport spectroscopy of subgap states in Coulomb-blockaded superconductors
    R. Seoane Souto, M. M. Wauters, K. Flensberg, M. Leijnse, and M. Burrello
    Phys. Rev. B 106, 235425 (2022).
  22. Creating and detecting poor man's Majorana bound states in interacting quantum dots
    A. Tsintzis, R. Seoane Souto, and M. Leijnse
    Phys. Rev. B 106, L201404 (2022).
  23. Interference and parity blockade in transport through a Majorana box
    M. Nitsch, R. Seoane Souto, and M. Leijnse
    Phys. Rev. B 106, L201305 (2022).
  24. Semiconductor-ferromagnet-superconductor planar heterostructures for 1D topological superconductivity
    S. D. Escribano, A. Maiani, M. Leijnse, K. Flensberg, Y. Oreg, A. Levy Yeyati, E. Prada, and R. Seoane Souto
    NPJ Quantum Mater. 7, 81 (2022).
  25. Fusion rules in a Majorana single-charge transistor
    R. Seoane Souto and M. Leijnse
    SciPost Phys. 12, 161 (2022).
  26. Demonstrating Majorana nonabelian exchange using fast adiabatic charge-transfer
    S. Krøjer, R. Seoane Souto, and K Flensberg
    Phys. Rev. B 105, 045425 (2022).
  27. Evidence for spin-polarized bound states in semiconductor–superconductor–ferromagnetic-insulator islands
    S. Vaitiekėnas, R. Seoane Souto, Y. Liu, P. Krogstrup, K. Flensberg, M. Leijnse, C. M. Marcus
    Phys. Rev. B 105, L041304 (2022).

    28. 2021

  28. Transient dynamics of a magnetic impurity coupled to superconducting electrodes: exact numerics versus perturbation theory
    R. Seoane Souto, A. E. Feiguin, A. Martín-Rodero, and A. Levy Yeyati
    Phys. Rev. B 104, 214506 (2021).
  29. Persistent current noise in narrow Josephson junctions
    D. Kuzmanovski, R. Seoane Souto, and A. V. Balatsky
    Phys. Rev. B. 104, L100505, (2021).
  30. Topological superconductivity in semiconductor-superconductor-magnetic insulator heterostructures
    A Maiani, R. Seoane Souto, M Leijnse, and K Flensberg
    Phys. Rev. B. 103, 104508, (2021).

    31. 2020

  31. Signatures of odd-frequency pairing in the Josephson junction current noise
    R. Seoane Souto, D. Kuzmanovski, and A. V. Balatsky
    Phys. Rev. Research 2, 043193 (2020).
  32. Odd-frequency superconductivity near a magnetic impurity in a conventional superconductor
    D. Kuzmanovski, R. Seoane Souto and, A. V. Balatsky
    Phys. Rev. B. 101, 094505, (2020).
  33. Timescales for charge transfer based operations on Majorana systems
    R. Seoane Souto, K. Flensberg, and M. Leijnse
    Phys. Rev. B. 101, 081407 (2020).

    34. 2019

  34. Buildup of vibron-mediated electron correlations in molecular junctions
    R. Avriller, R. Seoane Souto, A. Martín-Rodero, and A. Levy Yeyati
    Phys. Rev. B. 99, 121403 (2019).

    35. 2018

  35. Transient dynamics in interacting nanojunctions within self-consistent perturbation theory
    R. Seoane Souto, A. Martín-Rodero, and A. Levy Yeyati
    New J. Phys. 20, 083039 (2018).

    36. 2017

  36. Quench dynamics in superconducting nanojunctions: Metastability and dynamical Yang-Lee zeros
    R. Seoane Souto, A. Martín-Rodero, and A. Levy Yeyati
    Phys. Rev. B 96, 165444 (2017).
  37. Analysis of universality in transient dynamics of coherent electronic transport
    R. Seoane Souto, A. Martín-Rodero, and A. Levy Yeyati
    Fortschr. Phys. 65, 160062 (2017).

    38. 2016

  38. Andreev Bound States Formation and Quasiparticle Trapping in Quench Dynamics Revealed by Time-Dependent Counting Statistics
    R. Seoane Souto, A. Martín-Rodero, and A. Levy Yeyati
    Phys. Rev. Lett. 117, 267701 (2016).

    39. 2015

  39. Transient dynamics and waiting time distribution of molecular junctions in the polaronic regime
    R. Seoane Souto, R. Avriller, R. C. Monreal, A. Martín-Rodero, and A. Levy Yeyati
    Phys. Rev. B 92, 125435 (2015).

    40. 2014

  40. Dressed tunneling approximation for electronic transport through molecular transistors
    R. Seoane Souto, A. Levy Yeyati, A. Martín-Rodero, and R. C. Monreal
    Phys. Rev. B 89, 085412 (2014).

Books

  1. Quench Dynamics in Interacting and Superconducting Nanojunctions
    R. Seoane Souto
    Springer Nature, Germany, ISBN: 978-3-030-36595-0 (2020).

Book chapters

  1. Subgap states in semiconductor-superconductor devices for quantum technologies: Andreev qubits and minimal Majorana chains
    R. Seoane Souto and R. Aguado
    In, New Trends and Platforms for Quantum Technologies. editors. R. Aguado, R. Citro, M. Lewenstein, and M. Stern. Lecture Notes in Physics, vol. 1025. Springer, Cham.     [arXiv:2404.06592 (2024)].

Granted patents

  1. Improved plano-convex lens projector,
    J. L. Seoane Pena and R. Seoane Souto,
    ES2570808B1