Zobrazeno 1 - 10
of 380
pro vyhledávání: '"R, Seoane"'
Majorana modes can be engineered in arrays where quantum dots (QDs) are coupled via grounded superconductors, effectively realizing an artificial Kitaev chain. Minimal Kitaev chains, composed by two QDs, can host fully-localized Majorana modes at dis
Externí odkaz:
http://arxiv.org/abs/2411.07068
Autor:
Maiani, A., Drachmann, A. C. C., Galletti, L., Schrade, C., Liu, Y., Souto, R. Seoane, Vaitiekėnas, S.
We report tunneling spectroscopy and transport measurements in superconducting Al and ferromagnetic-insulator EuS bilayers. The samples display remanent spin-splitting, roughly half the superconducting gap, and supercurrent transport above the averag
Externí odkaz:
http://arxiv.org/abs/2404.17320
Autor:
Razmadze, D., Souto, R. Seoane, O'Farrell, E. C. T., Krogstrup, P., Leijnse, M., Marcus, C. M., Vaitiekėnas, S.
Publikováno v:
Phys. Rev. B 109, L041302 (2024)
We experimentally investigate supercurrent through Coulomb islands, where island and leads are fabricated from semiconducting nanowires with fully surrounding superconducting shells. Applying flux along the wire yields a series of destructive Little-
Externí odkaz:
http://arxiv.org/abs/2308.10006
Autor:
Razmadze, D., Souto, R. Seoane, Galletti, L., Maiani, A., Liu, Y., Krogstrup, P., Schrade, C., Gyenis, A., Marcus, C. M., Vaitiekėnas, S.
We report supercurrent transport measurements in hybrid Josephson junctions comprised of semiconducting InAs nanowires with epitaxial ferromagnetic insulator EuS and superconducting Al coatings. The wires display a hysteretic superconducting window c
Externí odkaz:
http://arxiv.org/abs/2204.03202
Autor:
Souto, R. Seoane, Leijnse, M.
Publikováno v:
SciPost Phys. 12, 161 (2022)
A demonstration of the theoretically predicted non-abelian properties of Majorana bound states (MBSs) would constitute a definite proof of a topological superconducting phase. Alongside the nontrivial braiding statistics, the fusion rules are fundame
Externí odkaz:
http://arxiv.org/abs/2112.07472
Publikováno v:
Phys. Rev. B 104, 214506 (2021)
Impurities coupled to superconductors offer a controlled platform to understand the interplay between superconductivity, many-body interactions, and non-equilibrium physics. In the equilibrium situation, local interactions at the impurity induce a tr
Externí odkaz:
http://arxiv.org/abs/2108.05959
Autor:
Vaitiekėnas, S., Souto, R. Seoane, Liu, Y., Krogstrup, P., Flensberg, K., Leijnse, M., Marcus, C. M.
Publikováno v:
Phys. Rev. B 105, L041304 (2022)
We report Coulomb blockade transport studies of semiconducting InAs nanowires grown with epitaxial superconducting Al and ferromagnetic insulator EuS on overlapping facets. Comparing experiment to a theoretical model, we associate cotunneling feature
Externí odkaz:
http://arxiv.org/abs/2104.01463
Publikováno v:
Phys. Rev. B 103, 104508 (2021)
Hybrid superconductor-semiconductor heterostructures are promising platforms for realizing topological superconductors and exploring Majorana bound states physics. Motivated by recent experimental progress, we theoretically study how magnetic insulat
Externí odkaz:
http://arxiv.org/abs/2011.06547
Publikováno v:
Phys. Rev. Research 2, 043193 (2020)
Odd frequency (odd-$\omega$) electron pair correlations naturally appear at the interface between BCS superconductors and other materials. The detection of odd-$\omega$ pairs, which are necessarily non-local in time, is still an open problem. The mai
Externí odkaz:
http://arxiv.org/abs/2008.00237
Publikováno v:
Phys. Rev. B 101, 081407 (2020)
In this article we analyze the efficiency of operations based on transferring charge from a quantum dot (QD) to two coupled topological superconductors, which can be used for performing nonabelian operations on Majorana bound states (MBSs). We develo
Externí odkaz:
http://arxiv.org/abs/1910.08420