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Strambini E, Iorio A, Durante O, et al. A Josephson phase battery. Nat Nanotechnol. 2020;15(8):656-660doi: 10.1038/s41565-020-0712-7.
Strambini, E., Iorio, A., Durante, O., Citro, R., Sanz-Fernández, C., Guarcello, C., Tokatly, I. V., Braggio, A., Rocci, M., Ligato, N., Zannier, V., Sorba, L., Bergeret, F. S., & Giazotto, F. (2020). A Josephson phase battery. Nature nanotechnology, 15(8), 656-660. https://doi.org/10.1038/s41565-020-0712-7
Strambini, Elia, et al. "A Josephson phase battery." Nature nanotechnology vol. 15,8 (2020): 656-660. doi: https://doi.org/10.1038/s41565-020-0712-7
Strambini E, Iorio A, Durante O, Citro R, Sanz-Fernández C, Guarcello C, Tokatly IV, Braggio A, Rocci M, Ligato N, Zannier V, Sorba L, Bergeret FS, Giazotto F. A Josephson phase battery. Nat Nanotechnol. 2020 Aug;15(8):656-660. doi: 10.1038/s41565-020-0712-7. Epub 2020 Jun 15. PMID: 32541945.
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Nat Nanotechnol. 2020 Aug;15(8):656-660. doi: 10.1038/s41565-020-0712-7. Epub 2020 Jun 15.

A Josephson phase battery.

Nature nanotechnology

Elia Strambini, Andrea Iorio, Ofelia Durante, Roberta Citro, Cristina Sanz-Fernández, Claudio Guarcello, Ilya V Tokatly, Alessandro Braggio, Mirko Rocci, Nadia Ligato, Valentina Zannier, Lucia Sorba, F Sebastián Bergeret, Francesco Giazotto

Affiliations

  1. NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, Pisa, Italy. [email protected].
  2. NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, Pisa, Italy. [email protected].
  3. Dipartimento di Fisica 'E. R. Caianiello', Università di Salerno, Fisciano, Italy.
  4. Centro de Física de Materiales (CFM-MPC), Centro Mixto CSIC-UPV/EHU, San Sebastián, Spain.
  5. Nano-Bio Spectroscopy Group, Departamento de Física de Materiales, Universidad del País Vasco (UPV/EHU), Donostia-San Sebastián, Spain.
  6. Ikerbasque, Basque Foundation for Science, Bilbao, Spain.
  7. NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, Pisa, Italy.
  8. Francis Bitter Magnet Laboratory and Plasma Science and Fusion Center, Massachusetts Institute of Technology, Cambridge, MA, USA.
  9. Centro de Física de Materiales (CFM-MPC), Centro Mixto CSIC-UPV/EHU, San Sebastián, Spain. [email protected].
  10. Donostia International Physics Center (DIPC), San Sebastián, Spain. [email protected].
  11. NEST, Istituto Nanoscienze-CNR and Scuola Normale Superiore, Pisa, Italy. [email protected].

PMID: 32541945 DOI: 10.1038/s41565-020-0712-7

Abstract

A classical battery converts chemical energy into a persistent voltage bias that can power electronic circuits. Similarly, a phase battery is a quantum device that provides a persistent phase bias to the wave function of a quantum circuit. It represents a key element for quantum technologies based on phase coherence. Here we demonstrate a phase battery in a hybrid superconducting circuit. It consists of an n-doped InAs nanowire with unpaired-spin surface states, that is proximitized by Al superconducting leads. We find that the ferromagnetic polarization of the unpaired-spin states is efficiently converted into a persistent phase bias φ

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