Zobrazeno 1 - 10
of 31
pro vyhledávání: '"Vekris, Alexandros"'
Autor:
Saldaña, Juan Carlos Estrada, Pavešič, Luka, Vekris, Alexandros, Grove-Rasmussen, Kasper, Nygård, Jesper, Žitko, Rok
Publikováno v:
Phys. Rev. B 108, 224507 (2023)
An epitaxial semiconductor-superconductor nanowire is a superconducting system with a complex level structure originating from hybridization: in addition to a dense set of higher-energy states derived predominantly from the metallic superconducting s
Externí odkaz:
http://arxiv.org/abs/2306.06001
Autor:
Vekris, Alexandros, Saldaña, Juan Carlos Estrada, Kanne, Thomas, Hvid-Olsen, Thor, Marnauza, Mikelis, Olsteins, Dags, Wauters, Matteo M., Burrello, Michele, Nygård, Jesper, Grove-Rasmussen, Kasper
We characterize in-situ grown parallel nanowires bridged by a superconducting island. The magnetic-field and temperature dependence of Coulomb blockade peaks measured across different pairs of nanowire ends are consistent with a sub-gap state extende
Externí odkaz:
http://arxiv.org/abs/2203.09213
Autor:
Saldaña, Juan Carlos Estrada, Vekris, Alexandros, Pavešič, Luka, Žitko, Rok, Grove-Rasmussen, Kasper, Nygård, Jesper
Condensed matter is composed of a small set of identical units, yet it shows an immense range of behaviour. Recently, an array of cold atoms was used to generate long-range quantum entanglement, a property of topological matter. Another approach to s
Externí odkaz:
http://arxiv.org/abs/2203.00104
Autor:
Vekris, Alexandros, Saldaña, Juan Carlos Estrada, de Bruijckere, Joeri, Lorić, Sara, Kanne, Thomas, Marnauza, Mikelis, Olsteins, Dags, Nygård, Jesper, Grove-Rasmussen, Kasper
Publikováno v:
Scientific Reports 11, 19034 (2021)
Little-Parks oscillations of a hollow superconducting cylinder are of interest for flux-driven topological superconductivity in single Rashba nanowires. The oscillations are typically symmetric in the orientation of the applied magnetic flux. Using d
Externí odkaz:
http://arxiv.org/abs/2106.01181
Autor:
Steffensen, Gorm Ole, Saldaña, Juan Carlos Estrada, Vekris, Alexandros, Krogstrup, Peter, Grove-Rasmussen, Kasper, Nygård, Jesper, Yeyati, Alfredo Levy, Paaske, Jens
We demonstrate direct transport between two opposing sets of Yu-Shiba-Rusinov (YSR) subgap states realized in a double quantum dot. This sub-gap transport relies on intrinsic quasiparticle relaxation, but the tunability of the device allows us to exp
Externí odkaz:
http://arxiv.org/abs/2105.06815
Autor:
Vekris, Alexandros, Saldaña, Juan Carlos Estrada, Kanne, Thomas, Marnauza, Mikelis, Olsteins, Dags, Fan, Furong, Li, Xiaobo, Hvid-Olsen, Thor, Qiu, Xiaohui, Xu, Hongqi, Nygård, Jesper, Grove-Rasmussen, Kasper
Publikováno v:
Phys. Rev. Research 3, 033240 (2021)
We characterize parallel double quantum dot Josephson junctions based on closely-grown double nanowires bridged by in-situ deposited superconductors. The parallel double dot behavior occurs despite the closeness of the nanowires and the potential ris
Externí odkaz:
http://arxiv.org/abs/2104.01591
Autor:
Kanne, Thomas, Olsteins, Dags, Marnauza, Mikelis, Vekris, Alexandros, Saldana, Juan Carlos Estrada, Loric, Sara, Schlosser, Rasmus D., Ross, Daniel, Csonka, Szabolcs, Grove-Rasmussen, Kasper, Nygård, Jesper
Parallel one-dimensional semiconductor channels connected by a superconducting strip constitute the core platform in several recent quantum device proposals that rely e.g. on Andreev processes or topological effects. In order to realize these proposa
Externí odkaz:
http://arxiv.org/abs/2103.13938
Autor:
Saldaña, Juan Carlos Estrada, Vekris, Alexandros, Pavešič, Luka, Krogstrup, Peter, Žitko, Rok, Grove-Rasmussen, Kasper, Nygård, Jesper
Cooper pairing and Coulomb repulsion are antagonists, producing distinct energy gaps in superconductors and Mott insulators. When a superconductor exchanges unpaired electrons with a quantum dot, its gap is populated by a pair of electron-hole symmet
Externí odkaz:
http://arxiv.org/abs/2101.10794
Autor:
Saldaña, Juan Carlos Estrada, Vekris, Alexandros, Sosnovtseva, Victoria, Kanne, Thomas, Krogstrup, Peter, Grove-Rasmussen, Kasper, Nygård, Jesper
Publikováno v:
Commun Phys 3, 125 (2020) https://rdcu.be/b5ymM
The strong coupling of a superconductor to a spinful quantum dot results in Yu-Shiba-Rusinov (YSR) discrete subgap excitations. In isolation and at zero temperature, the excitations are $\delta$ resonances. In transport experiments, however, they sho
Externí odkaz:
http://arxiv.org/abs/2002.12882
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