Print Email Facebook Twitter Orbital Contributions to the Electron g Factor in Semiconductor Nanowires Title Orbital Contributions to the Electron g Factor in Semiconductor Nanowires Author Winkler, Georg W. (ETH Zürich) Varjas, D. (TU Delft QRD/Kouwenhoven Lab) Skolasinski, R.J. (TU Delft QRD/Kouwenhoven Lab) Soluyanov, Alexey A. (ETH Zürich; St. Petersburg State University) Troyer, Matthias (ETH Zürich; Microsoft Research) Wimmer, M.T. (TU Delft QRD/Kouwenhoven Lab) Date 2017 Abstract Recent experiments on Majorana fermions in semiconductor nanowires [S. M. Albrecht, A. P. Higginbotham, M. Madsen, F. Kuemmeth, T. S. Jespersen, J. Nygård, P. Krogstrup, and C. M. Marcus, Nature (London) 531, 206 (2016)NATUAS0028-083610.1038/nature17162] revealed a surprisingly large electronic Landé g factor, several times larger than the bulk value - contrary to the expectation that confinement reduces the g factor. Here we assess the role of orbital contributions to the electron g factor in nanowires and quantum dots. We show that an L·S coupling in higher subbands leads to an enhancement of the g factor of an order of magnitude or more for small effective mass semiconductors. We validate our theoretical finding with simulations of InAs and InSb, showing that the effect persists even if cylindrical symmetry is broken. A huge anisotropy of the enhanced g factors under magnetic field rotation allows for a straightforward experimental test of this theory. To reference this document use: http://resolver.tudelft.nl/uuid:5349461e-17a2-46ae-b013-0dc2e84bf6a9 DOI https://doi.org/10.1103/PhysRevLett.119.037701 ISSN 0031-9007 Source Physical Review Letters, 119 (3) Part of collection Institutional Repository Document type journal article Rights © 2017 Georg W. Winkler, D. Varjas, R.J. Skolasinski, Alexey A. Soluyanov, Matthias Troyer, M.T. Wimmer Files PDF PhysRevLett.119.037701.pdf 521.78 KB Close viewer /islandora/object/uuid:5349461e-17a2-46ae-b013-0dc2e84bf6a9/datastream/OBJ/view