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InSb nanowires with built-in GaxIn1-xSb tunnel barriers for Majorana devices
- Source :
- Nano Letters, 17(2). American Chemical Society, Nano Letters, Nano Letters, 2017, 17 (2), pp.721-727. ⟨10.1021/acs.nanolett.6b03835⟩, Nano Letters, American Chemical Society, 2017, 17 (2), pp.721-727. ⟨10.1021/acs.nanolett.6b03835⟩
- Publication Year :
- 2017
- Publisher :
- American Chemical Society, 2017.
-
Abstract
- Majorana zero modes (MZMs), prime candidates for topological quantum bits, are detected as zero bias conductance peaks (ZBPs) in tunneling spectroscopy measurements. Implementation of a narrow and high tunnel barrier in the next generation of Majorana devices can help to achieve the theoretically predicted quantized height of the ZBP. We propose a material-oriented approach to engineer a sharp and narrow tunnel barrier by synthesizing a thin axial segment of GaxIn1-xSb within an InSb nanowire. By varying the precursor molar fraction and the growth time, we accurately control the composition and the length of the barriers. The height and the width of the GaxIn1-xSb tunnel barrier are extracted from the Wentzel-Kramers-Brillouin (WKB)-fits to the experimental I-V traces.<br />Comment: See doi: 10.5281/zenodo.5064400 for source data. No changes in this version compared to the previous version
- Subjects :
- Materials science
strain mapping
Nanowire
FOS: Physical sciences
band engineering
Bioengineering
02 engineering and technology
01 natural sciences
WKB approximation
chemistry.chemical_compound
[PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph]
Tunnel junction
0103 physical sciences
Mesoscale and Nanoscale Physics (cond-mat.mes-hall)
[CHIM.CRIS]Chemical Sciences/Cristallography
General Materials Science
010306 general physics
Quantum
Quantum tunnelling
Condensed Matter - Mesoscale and Nanoscale Physics
Condensed matter physics
Mechanical Engineering
Indium antimonide
indium antimonide
tunnel barrier
Conductance
General Chemistry
[CHIM.MATE]Chemical Sciences/Material chemistry
Semiconductor nanowire
021001 nanoscience & nanotechnology
Condensed Matter Physics
MAJORANA
chemistry
[PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]
axial heterostructure
0210 nano-technology
Subjects
Details
- Language :
- English
- ISSN :
- 15306992 and 15306984
- Volume :
- 17
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- Nano Letters
- Accession number :
- edsair.doi.dedup.....44639f61b0bfff78736a70d243ad07bb
- Full Text :
- https://doi.org/10.1021/acs.nanolett.6b03835