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  Proposed Detection of the Topological Phase in Ring-Shaped Semiconductor-Superconductor Nanowires Using Coulomb Blockade Transport

Zocher, B., Horsdal, M., & Rosenow, B. (2012). Proposed Detection of the Topological Phase in Ring-Shaped Semiconductor-Superconductor Nanowires Using Coulomb Blockade Transport. Physical Review Letters, 109(22): 227001.

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Item Permalink: https://hdl.handle.net/21.11116/0000-000E-C2CA-3 Version Permalink: https://hdl.handle.net/21.11116/0000-000E-C2CB-2
Genre: Journal Article

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Zocher, B., Author
Horsdal, M., Author
Rosenow, B.1, Author
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1Max Planck Society, ou_persistent13              

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 Abstract: In semiconductor-superconductor hybrid structures a topological phase transition is expected as a function of the chemical potential or magnetic field strength. We show that signatures of this transition can be observed in nonlinear Coulomb blockade transport through a ring shaped structure. In particular, on the scale of the superconducting gap and for a fixed electron parity of the ring, the excitation spectrum is independent of flux in the topologically trivial phase but acquires a characteristic h/e periodicity in the nontrivial phase. We relate the h/e periodicity to the recently predicted 4 pi periodicity of the Josephson current across a junction formed by two topological superconductors.

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Language(s): eng - English
 Dates: 2012
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 632907
ISI: 000311546600018
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Title: Physical Review Letters
Source Genre: Journal
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Pages: - Volume / Issue: 109 (22) Sequence Number: 227001 Start / End Page: - Identifier: ISSN: 0031-9007