Journal article
Majorana modes with side features in magnet-superconductor hybrid systems
D Crawford, E Mascot, M Shimizu, P Beck, J Wiebe, R Wiesendanger, HO Jeschke, DK Morr, S Rachel
Npj Quantum Materials | NATURE PORTFOLIO | Published : 2022
Open access
Abstract
Magnet-superconductor hybrid (MSH) systems represent promising platforms to host Majorana zero modes (MZMs), the elemental building blocks for fault-tolerant quantum computers. Theoretical description of such MSH structures is mostly based on simplified models, not accounting for the complexity of real materials. Here, based on density functional theory, we derive a superconducting 80-band model to study an MSH system consisting of a magnetic manganese chain on the s wave superconductor niobium. For a wide range of values of the superconducting order parameter, the system is a topological superconductor, with MZMs exhibiting non-universal spatial patterns and a drastic accumulation of spectr..
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Awarded by European Commission
Funding Acknowledgements
The authors acknowledge discussions and previous collaborations with L. Schneider. J.W. and R.W. gratefully acknowledge funding by the Cluster of Excellence 'Advanced Imaging of Matter' (EXC 2056 - project ID 390715994) of the Deutsche Forschungsgemeinschaft (DFG). P.B., J.W., and R.W. acknowledge support by the DFG via SFB 925 - project ID 170620586. R.W. gratefully acknowledges financial support from the European Union via the ERC Advanced Grant ADMIRE (project No. 786020). M.S. acknowledges support by Grant-in-Aid for JSPS Fellows No. JP21J12095. E.M. and D.K.M. acknowledge support from the U.S. Department of Energy, Office of Science, Basic Energy Sciences, under Award No. DE-FG02-05ER46225. S.R. acknowledges support from the Australian Research Council through Grant No. DP200101118.