Výsledky vyhledávání - "G. Steffensen"

Akademický článek

Yu–Shiba–Rusinov screening of spins in double quantum dots

Autor: K. Grove-Rasmussen, G. Steffensen, A. Jellinggaard, M. H. Madsen, R. Žitko, J. Paaske, J. Nygård

Publikováno v: Nature Communications, Vol 9, Iss 1, Pp 1-6 (2018)

Coupling superconductors to mesoscopic systems leads to unusual effects that could be exploited in new devices including topological quantum computers. Here the authors present a double quantum dot with a Yu–Shiba–Rusinov ground state arising fro

Externí odkaz: https://doaj.org/article/daa71acd9cb44f19aa65012a1a063096

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Spatially dispersing Yu-Shiba-Rusinov states in the unconventional superconductor FeTe0.55Se0.45

Autor: Milan P. Allan, Damianos Chatzopoulos, Brian M. Andersen, Koen M. Bastiaans, Jens Paaske, Genda Gu, Doohee Cho, Alireza Akbari, G. Steffensen, Damian Bouwmeester

Publikováno v: Chatzopoulos, D, Cho, D, Bastiaans, K M, Steffensen, G O, Bouwmeester, D, Akbari, A, Gu, G, Paaske, J, Andersen, B M & Allan, M P 2021, ' Spatially dispersing Yu-Shiba-Rusinov states in the unconventional superconductor FeTe 0.55 Se 0.45 ', Nature Communications, vol. 12, no. 1, 298 . https://doi.org/10.1038/s41467-020-20529-x
Nature Communications
Nature Communications, 12(1)
Nature Communications, Vol 12, Iss 1, Pp 1-8 (2021)

By using scanning tunneling microscopy (STM) we find and characterize dispersive, energy-symmetric in-gap states in the iron-based superconductor FeTe0.55Se0.45, a material that exhibits signatures of topological superconductivity, and Majorana bound

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::90acaa02b5ebe8e6d3c29934ef72f046
http://resolver.tudelft.nl/uuid:b24aef9f-3c39-4218-9958-99108194b925

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Triplet-blockaded Josephson supercurrent in double quantum dots

Autor: Jesper Nygård, Daniël Bouman, Péter Boross, Jens Paaske, Ruben J. J. van Gulik, Peter Krogstrup, Dávid Pataki, Attila Geresdi, András Pályi, G. Steffensen

Publikováno v: Physical Review B, 102(22)
Bouman, D, van Gulik, R J J, Steffensen, G, Pataki, D, Boross, P, Krogstrup, P, Nygard, J, Paaske, J, Palyi, A & Geresdi, A 2020, ' Triplet-blockaded Josephson supercurrent in double quantum dots ', Physical Review B, vol. 102, no. 22, 220505 . https://doi.org/10.1103/PhysRevB.102.220505
Physical Review B

Serial double quantum dots created in semiconductor nanostructures provide a versatile platform for investigating two-electron spin quantum states, which can be tuned by electrostatic gating and an external magnetic field. In this work, we directly m

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e19eb66d1479e61f69f09d9003cde8d5

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Yu–Shiba–Rusinov screening of spins in double quantum dots

Autor: A. Jellinggaard, Morten Hannibal Madsen, G. Steffensen, Jens Paaske, Rok Žitko, Jesper Nygård, Kasper Grove-Rasmussen

Publikováno v: Nature Communications, Vol 9, Iss 1, Pp 1-6 (2018)
Grove-Rasmussen, K, Steffensen, G O, Jellinggaard, A R, Madsen, M H, Žitko, R, Paaske, J & Nygård, J 2018, ' Yu-Shiba-Rusinov screening of spins in double quantum dots ', Nature Communications, vol. 9, 2376 . https://doi.org/10.1038/s41467-018-04683-x

A magnetic impurity coupled to a superconductor gives rise to a Yu-Shiba-Rusinov (YSR) state inside the superconducting energy gap. With increasing exchange coupling the excitation energy of this state eventually crosses zero and the system switches

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3ce9a4424fde37ad14d9b0f7a6683c8a
https://doi.org/10.1038/s41467-018-04683-x

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Supercurrent in a Double Quantum Dot

Autor: J. C. Estrada Saldaña, Jens Paaske, G. Steffensen, Jesper Nygård, Alexandros Vekris, Peter Krogstrup, Kasper Grove-Rasmussen, Rok Žitko

Publikováno v: Physical Review Letters

We demonstrate the Josephson effect in a serial double quantum dot defined in a nanowire with epitaxial superconducting leads. The supercurrent stability diagram adopts a honeycomb pattern with electron-hole and left-right reflection symmetry. We obs

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e9c17ceca4230d9a7bbede79fd4274f8

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Two-Impurity Yu-Shiba-Rusinov States in Coupled Quantum Dots

Autor: Jens Paaske, Alexandros Vekris, Rok Žitko, Peter Krogstrup, J. C. Estrada Saldaña, Jesper Nygård, Kasper Grove-Rasmussen, G. Steffensen

Publikováno v: Estrada Saldaña, J C, Vekris, A, Zitko, R, Steffensen, G O, Krogstrup, P, Paaske, J, Grove-Rasmussen, K & Nygård, J 2020, ' Two-Impurity Yu-Shiba-Rusinov States in Coupled Quantum Dots ', Physical Review B, vol. 102, no. 19, 195143 . https://doi.org/10.1103/PhysRevB.102.195143
Physical Review B

Using double quantum dots as the weak link of a Josephson junction, we realize the superconducting analog of the celebrated two-impurity Kondo model. The device shows a cusped current-voltage characteristic, which can be modelled by an overdamped cir

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