Abstract
In the pursuit of magneto-electronic systems nonstoichiometric magnetic elements commonly introduce disorder and enhance magnetic scattering. We demonstrate the growth of (EuIn)As shells, with a unique crystal structure comprised of a dense net of Eu inversion planes, over InAs and InAs1-xSbxcore nanowires. This is imaged with atomic and elemental resolution which reveal a prismatic configuration of the Eu planes. The results are supported by molecular dynamics simulations. Local magnetic and susceptibility mappings show magnetic response in all nanowires, while a subset bearing a DC signal points to ferromagnetic order. These provide a mechanism for enhancing Zeeman responses, operational at zero applied magnetic field. Such properties suggest that the obtained structures can serve as a preferred platform for time-reversal symmetry broken one-dimensional states including intrinsic topological superconductivity.
Original language | English |
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Pages (from-to) | 8925-8931 |
Number of pages | 7 |
Journal | Nano Letters |
Volume | 22 |
Issue number | 22 |
DOIs | |
State | Published - 23 Nov 2022 |
Bibliographical note
Publisher Copyright:© 2022 American Chemical Society. All rights reserved.
Funding
We deeply thank Michael Fourmansky for his professional assistance in the MBE growth of NWs. We thank Olga Brontvein for lamella preparation and the consistent support of the Electron Microscopy unit. R.B. and P.K. acknowledge the Polish National Science Centre (Project 2016/23/B/ST3/03725). P.K. and M.A.Z.-K. acknowledge the scientific cooperation project “Properties of III–V and IV–VI semiconductor nanowires” financed by the Polish Academy of Sciences and the Israel Academy of Science and Humanities. X.W. and B.K. were supported by the European Research Council Grant No. ERC-2019-COG-866236, the Pazy Research Foundation Grant No. 107-2018, and the European Cooperation in Science and Technology (COST Actions CA21144). H.S. is an incumbent of the Henry and Gertrude F. Rothschild Research Fellow Chair. H.B. and H.S. acknowledge support from the Israel Science Foundation (Grant 2609/19). L.H. greatly acknowledges the support of the Irving and Cherna Moskowitz Center for Nano and Bio-Nano Imaging.
Funders | Funder number |
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Pazy Research Foundation | 107-2018 |
Horizon 2020 Framework Programme | 866236 |
European Commission | |
European Cooperation in Science and Technology | CA21144 |
Israel Academy of Sciences and Humanities | |
Israel Science Foundation | 2609/19 |
Narodowe Centrum Nauki | 2016/23/B/ST3/03725 |
Polska Akademia Nauk |
Keywords
- (EuIn)As
- Eu inversion plane
- core-shell
- magnetic
- mosaic structure
- nanowires