Theory of Quantum Materials and Solid State Quantum Technologies

Theory of Quantum Materials and Solid State Quantum Technologies

Search

Skip to content

People
Publications
Outreach
Join Us

Search for:

Join Us

If you are interesting in doing the TFM in our group, contact us! Funding opportunities are available.

Images

Majoranas are theoretical particles of great interest, as they are anticipated to show different exotic properties, including their applications in quantum computing. However, the jury is still out on whether these particles have been detected experimentally or not. In our collaborationwith scientists at the Institute of Science and Technology Austria (ISTA) and the Catalan Institute of Nanoscience and Nanotechnology (ICN2), we have discovered Majorana imposters by applying two measurement techniques, which will help to reduce interpretation uncertainties in the future search for these elusive particles. Our findings, based on new theoretical and experimental investigations, are published in Nature

New publication in Nature “Majorana-like Coulomb spectroscopy in the absence of zero-bias peaks “
17 January, 2023 ramon
Most experimental claims of Majorana bound states rest on the observation of a persistent zero bias peak (ZBP) in tunneling spectra. In our paper, we provide comprehensive evidence that the ZBPs observed in the experiments with semiconductor nanowires fully coated with a superconducting shell are not of Majorana origin. Instead, our theory demonstrates that ZBPs can be explained in terms of Yu-Shiba-Rusinov states (a special type of Andreev bound state) that originate in the tunneling region owing to the competition between electron correlations and superconductivity.

New publication in Science “Nontopological zero-bias peaks in full-shell nanowires induced by flux-tunable Andreev states”
5 July, 2021 ramon
In this review, we discuss the main properties of Andreev and Majorana bound states, state-of-the-art techniques for their detection and theoretical progress beyond minimal models, including different types of robust zero modes that may emerge without a band-topological transition.

Nature Review Physics “From Andreev to Majorana bound states in hybrid superconductor-semiconductor nanowires”
21 December, 2020 ramon

More images →

Instituto de Ciencia de Materiales de Madrid, CSIC

Ramón Aguado
Leni Bascones
- CV
- Publications
- Courses
- Talks
Luis Brey
María José Calderón
- Publications
Elsa Prada
Pablo San-Jose
Rui Silva
Giorgos Giavaras
Olga Arroyo
Fernando Peñaranda
Carlos Payá
Eduardo B. Molinero

Search for:

Proudly powered by WordPress