Hard Superconducting Gap in InSb Nanowires
| Autor: | Kun Zuo, Sebastien Plissard, Diana Car, Leo P. Kouwenhoven, Vincent Mourik, Folkert K. de Vries, Sonia Conesa-Boj, Attila Geresdi, Marina Quintero-Pérez, Erik P. A. M. Bakkers, Jasper van Veen, David J. van Woerkom, Maja C. Cassidy, Sebastian Koelling, Michał P. Nowak, Önder Gül, Hao Zhang |
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| Přispěvatelé: | Delft University of Technology (TU Delft), Henan Agriculture University, Eindhoven University of Technology [Eindhoven] (TU/e), Équipe Matériaux et Procédés pour la Nanoélectronique (LAAS-MPN), Laboratoire d'analyse et d'architecture des systèmes (LAAS), Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université Toulouse - Jean Jaurès (UT2J), Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université Toulouse Capitole (UT Capitole), Université de Toulouse (UT), Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées-Université Toulouse - Jean Jaurès (UT2J)-Université Toulouse 1 Capitole (UT1), Université Fédérale Toulouse Midi-Pyrénées, Photonics and Semiconductor Nanophysics, Advanced Nanomaterials & Devices, Semiconductor Nanostructures and Impurities |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Letter
NI - Nano Instrumentation High Tech Systems & Materials 02 engineering and technology Superconducting materials 01 natural sciences Topology Hybrid devices Indium antimonides Condensed Matter::Superconductivity General Materials Science ComputingMilieux_MISCELLANEOUS Quantum computer Superconductivity TS - Technical Sciences Condensed Matter - Materials Science Industrial Innovation Condensed matter physics Supercurrent [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Topological insulator [PHYS.COND.CM-MS]Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci] Nano Technology hybrid device 0210 nano-technology Materials science III-V semiconductors Topological superconductivity Nanowire FOS: Physical sciences Bioengineering InSb Topological quantum computer Narrow band gap semiconductors Superconductivity (cond-mat.supr-con) Hard gap Condensed Matter::Materials Science [PHYS.QPHY]Physics [physics]/Quantum Physics [quant-ph] Mesoscale and Nanoscale Physics (cond-mat.mes-hall) 0103 physical sciences [CHIM.CRIS]Chemical Sciences/Cristallography 010306 general physics One dimensional Condensed Matter - Mesoscale and Nanoscale Physics business.industry Nanowires Mechanical Engineering Two dimensional electron gas Condensed Matter - Superconductivity Quantum computers Materials Science (cond-mat.mtrl-sci) General Chemistry Semiconductor nanowire Electrical contacts Semiconductor Electron gas Magnetic fields Quantum theory business Majorana |
| Zdroj: | Nano Letters Nano Letters, 2017, 17 (4), pp.2690-2696. ⟨10.1021/acs.nanolett.7b00540⟩ Nano Letters, American Chemical Society, 2017, 17 (4), pp.2690-2696. ⟨10.1021/acs.nanolett.7b00540⟩ Nano Letters, 17(4), 2690-2696. American Chemical Society Nano Letters, 4, 17, 2690-2696 Nano Letters: a journal dedicated to nanoscience and nanotechnology, 17(4) |
| ISSN: | 1530-6984 1530-6992 |
| Popis: | Topological superconductivity is a state of matter that can host Majorana modes, the building blocks of a topological quantum computer. Many experimental platforms predicted to show such a topological state rely on proximity-induced superconductivity. However, accessing the topological properties requires an induced hard superconducting gap, which is challenging to achieve for most material systems. We have systematically studied how the interface between an InSb semiconductor nanowire and a NbTiN superconductor affects the induced superconducting properties. Step by step, we improve the homogeneity of the interface while ensuring a barrier-free electrical contact to the superconductor, and obtain a hard gap in the InSb nanowire. The magnetic field stability of NbTiN allows the InSb nanowire to maintain a hard gap and a supercurrent in the presence of magnetic fields (~ 0.5 Tesla), a requirement for topological superconductivity in one-dimensional systems. Our study provides a guideline to induce superconductivity in various experimental platforms such as semiconductor nanowires, two dimensional electron gases and topological insulators, and holds relevance for topological superconductivity and quantum computation. published version |
| Databáze: | OpenAIRE |
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