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Quantentransport Phänomene in Nanodrähten

English title Quantum Transport Phenomena in Hybrid Devices based on Nanowrire
Applicant Schönenberger Christian
Number 172638
Funding scheme Project funding (Div. I-III)
Research institution Departement Physik Universität Basel
Institution of higher education University of Basel - BS
Main discipline Condensed Matter Physics
Start/End 01.04.2017 - 31.03.2020
Approved amount 1'000'000.00
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Keywords (9)

Quantum Transport; Nanoelectronics; Charge and Spin Transport in Nanostructures; Superconductivity; Quantum Electronics; Electronic Properties of Nanostructures; Semiconducting Nanowires; Spintronics; Carbon Nanotubes

Lay Summary (German)

Lead
Neuartige Quantenzustände wir Majorana Fermionen in nanostrukturierten Halbleitern für das quantenbasierte Rechnen
Lay summary

Der Fokus dieses vom Projekts liegt auf der Untersuchung neuartiger Quantenzustände, die sich wie Teilchen mit besonderen Eigenschaften verhalten. Es handelt sich hier um sogenannte Majorana Fermionen, benannt nach dem Italienischen Physiker Ettore Majorana, der zeigte, dass es Teilchen geben kann, die identisch zum Antiteilchen sind. Wir wissen, dass sich ein Elektron und ein Positron (das Antiteilchen des Elektrons) am selben Ort gegenseitig aufheben würden. Majorana Fermionen können aber stabil sein, dies aber nur bei Energie Null. Bis heute gibt es aber keine klare Evidenz, dass Majorana Fermionen in der Natur existieren. Jedoch lassen sie sich in einem Halbleitermaterial künstlich erzeugen. Dazu braucht es, unter anderem, einen Halbleiter mit einer starken Spin-Bahn-Kopplung, die dafür sorgt, dass der Spin des Elektrons an die Position des Elektrons gekoppelt ist. Zusätzlich braucht es einen Supraleiter. Dieser erzeugt durch einen Mechanismus Antiteilchen, die symmetrisch zur Energie Null liegen. Es stellt sich nun heraus, dass die beiden Zustände des Teilchens und Antiteilchens bei bestimmten Parametern genau bei der Energie Null zu liegen kommen und damit Majorana Fermionen realisiert werden! Interessant an diesem Phänomen ist, dass es robust ist. Der Majorana-Zustand existiert in einem grösseren Parameterbereich (einer Phase), der durch Symmetriegegebenheiten bestimmt wird. Das Material nimmt in dieser Phase einen Zustand ein, der topologischer Isolator genannt wird. Das Ganze ist keine akademische Spielerei, sondern hat Anwendungen im Quantenrechnen. Man erhofft sich stabile Quantenbits aufgrund der Robustheit der Majorana Zustände. In diesem Projekt solchen solche Zustände gezielt erzeugt und mit modernen Messmethoden untersucht werden.

Direct link to Lay Summary Last update: 02.04.2017

Responsible applicant and co-applicants

Employees

Publications

Publication
Large spatial extension of the zero-energy Yu–Shiba–Rusinov state in a magnetic field
Scherübl Zoltán, Fülöp Gergő, Moca Cătălin Paşcu, Gramich Jörg, Baumgartner Andreas, Makk Péter, Elalaily Tosson, Schönenberger Christian, Nygård Jesper, Zaránd Gergely, Csonka Szabolcs (2020), Large spatial extension of the zero-energy Yu–Shiba–Rusinov state in a magnetic field, in Nature Communications, 11(1), 1834-1834.
Controllable p–n junctions in three-dimensional Dirac semimetal Cd 3 As 2 nanowires
Bayogan Janice Ruth, Park Kidong, Siu Zhuo Bin, An Sung Jin, Tang Chiu-Chun, Zhang Xiao-Xiao, Song Man Suk, Park Jeunghee, Jalil Mansoor B A, Nagaosa Naoto, Hirakawa Kazuhiko, Schönenberger Christian, Seo Jungpil, Jung Minkyung (2020), Controllable p–n junctions in three-dimensional Dirac semimetal Cd 3 As 2 nanowires, in Nanotechnology, 31(20), 205001-205001.
Highly symmetric and tunable tunnel couplings in InAs/InP nanowire heterostructure quantum dots
Thomas Frederick S, Baumgartner Andreas, Gubser Lukas, Jünger Christian, Fülöp Gergő, Nilsson Malin, Rossi Francesca, Zannier Valentina, Sorba Lucia, Schönenberger Christian (2020), Highly symmetric and tunable tunnel couplings in InAs/InP nanowire heterostructure quantum dots, in Nanotechnology, 31(13), 135003-135003.
Wideband and On-Chip Excitation for Dynamical Spin Injection into Graphene
Indolese David, Zihlmann Simon, Makk Péter, Jünger Christian, Thodkar Kishan, Schönenberger Christian (2018), Wideband and On-Chip Excitation for Dynamical Spin Injection into Graphene, in Physical Review Applied, 10(4), 044053-044053.
Signatures of van Hove Singularities Probed by the Supercurrent in a Graphene-hBN Superlattice
Indolese D. I., Delagrange R., Makk P., Wallbank J. R., Wanatabe K., Taniguchi T., Schönenberger C. (2018), Signatures of van Hove Singularities Probed by the Supercurrent in a Graphene-hBN Superlattice, in Physical Review Letters, 121(13), 137701-137701.
Cooper-pair splitting in two parallel InAs nanowires
Baba S, Jünger C, Matsuo S, Baumgartner A, Sato Y, Kamata H, Li K, Jeppesen S, Samuelson L, Xu H Q, Schönenberger C, Tarucha S (2018), Cooper-pair splitting in two parallel InAs nanowires, in New Journal of Physics, 20(6), 063021-063021.
Blocking-state influence on shot noise and conductance in quantum dots
Harabula M.-C., Ranjan V., Haller R., Fülöp G., Schönenberger C. (2018), Blocking-state influence on shot noise and conductance in quantum dots, in Physical Review B, 97(11), 115403-115403.
High-detection efficiency and low-timing jitter with amorphous superconducting nanowire single-photon detectors
Caloz Misael, Perrenoud Matthieu, Autebert Claire, Korzh Boris, Weiss Markus, Schönenberger Christian, Warburton Richard J., Zbinden Hugo, Bussières Félix (2018), High-detection efficiency and low-timing jitter with amorphous superconducting nanowire single-photon detectors, in Applied Physics Letters, 112(6), 061103-061103.
Andreev bound states probed in three-terminal quantum dots
Gramich J., Baumgartner A., Schönenberger C. (2017), Andreev bound states probed in three-terminal quantum dots, in Physical Review B, 96(19), 195418-195418.
Measuring a Quantum Dot with an Impedance-Matching On-Chip Superconducting LC Resonator at Gigahertz Frequencies
Harabula M.-C., Hasler T., Fülöp G., Jung M., Ranjan V., Schönenberger C. (2017), Measuring a Quantum Dot with an Impedance-Matching On-Chip Superconducting LC Resonator at Gigahertz Frequencies, in Physical Review Applied, 8(5), 054006-054006.
Contactless Microwave Characterization of Encapsulated Graphene p−n Junctions
Ranjan V., Zihlmann S., Makk P., Watanabe K., Taniguchi T., Schönenberger C. (2017), Contactless Microwave Characterization of Encapsulated Graphene p−n Junctions, in Physical Review Applied, 7(5), 054015-054015.

Collaboration

Group / person Country
Types of collaboration
Minkyung Jung at DGIST Research Institute at Daegu Korea Korean Republic (South Korea) (Asia)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Lucia Sorba from CNR Pisa Italy (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
D. Weiss, Univ. of Regensburg, Germany Germany (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
J. Nygard at Univ. of Copenhagen Denmark (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
S. Csonka at BME (Budapest) Hungary (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
- Exchange of personnel
Ilaria Zardo at the Univ. of Basel Switzerland (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
- Exchange of personnel
K. Dick at Univ. of Lund Sweden (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
C. Thelander at Univ. Lund Sweden (Europe)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
Seigo Tarucha's group at Riken Japan (Asia)
- in-depth/constructive exchanges on approaches, methods or results
- Publication
- Research Infrastructure
- Exchange of personnel

Scientific events

Active participation

Title Type of contribution Title of article or contribution Date Place Persons involved
ENV Workshop 2020 Talk given at a conference Subgap States in Semiconducting Nanowires Coupled to a Superconductor (presented by A. Baumgartner) 17.02.2020 Prag, Czech Republic Jünger Christian; Nilsson Malin; Abulizi Gulibusitan; Delagrange Raphaelle; Schönenberger Christian;
Seminar on Quantum Transport in Low Dimesnioanl Solid-State Matter Talk given at a conference Transport Spectroscopy of Semiconductor-Superconductor Nanowire Hybrid Devices 14.02.2020 Budapest, Hungary Nilsson Malin; Schönenberger Christian; Jünger Christian; Delagrange Raphaelle;
Silicon Quantum Electronics Poster Circuit Quantum-Electrodynamics with Semiconducting nanowires (presented by J. Ridderbos) 14.10.2019 San Sebastian, Spain Schönenberger Christian; Haller Roy;
Nanowire Week 2019 Talk given at a conference Tunnel Spectroscopy of Superconducting Proximity Effect in InAs Nanowires using Self-Aligned Crystal Phase Quantum Dots (presented by M. Nilsson) 26.09.2019 Pisa, Italy Schönenberger Christian; Jünger Christian; Nilsson Malin;
Joint Annual Meeting of the SPS and OPG Talk given at a conference Shot-Noise of High-Impedance Quantum Devices using Impedance Matching 26.08.2019 Zürich, Switzerland Schönenberger Christian; Haller Roy;
25th International Conference on Noise and Fluctuations Talk given at a conference Shot-Noise of High-Impedance Quantum Devices using Impredance Matching 18.06.2019 Neuchatel, Switzerland Haller Roy; Schönenberger Christian;
700th Heraeus Seminar on One-Dimensional Systems for Quantum Technology (presented by O. Faist) Poster Parallel Semiconductor nanowire Based Electronic Devices 16.06.2019 Bad Honnef, Germany Schönenberger Christian; Jünger Christian;
700th Heraeus Seminar on One-Dimensional Systems for Quantum Technology Poster Double-Quantum Dot Tunneling Magnetoresistance without Ferromagnetic Contacts (presented by A. Bordoloi) 16.06.2019 Bad Honned, Germany Bordoloi Arunav; Schönenberger Christian;
700th Heraeus Seminar on One-Dimensional Systems for Quantum Technology Poster Tunnel Spectroscopy of Superconducting Proximity Effect in InAs Nanowires using Aligned Crystal-Phase Quantum Dots (presented by A. pally) 16.06.2019 Bad Honnef, Germany Nilsson Malin; Schönenberger Christian; Jünger Christian;
697th Heraeus Semminar on Superconductivity in Low-Dimensional and Interacting Systems Poster RF-Squid Inductively Coupled to a Superconducting Resonator 03.06.2019 Bad Honnef, Germany Haller Roy; Schönenberger Christian;
Bound States in Superconductors and Interfaces (BOSSA) Talk given at a conference Electron Spectroscopy of Andreev-Type Bound States in Semiconducting Nanowires and Carbon Nanotubes (presented by A. Baumgartner) 08.04.2019 Dresden, Germany Abulizi Gulibusitan; Schönenberger Christian; Jünger Christian; Nilsson Malin;
Bound States in Superconductors and Interfaces (BOSSA) Poster Tunnel Spectroscopy of Superconducting Proximity Effect in InAs Nanowires using aligned Crystal-Phase Quantumn Dots 08.04.2019 Dresden, Germany Schönenberger Christian; Jünger Christian; Nilsson Malin;
Rencontres de Moriond - Quantum Mesoscopic Physics Poster Circuit Quantum-Electrodynamics with Semiconducting Nanowires 16.03.2019 La Thuile, Italy Schönenberger Christian; Haller Roy;
Recontres de Moriond - Quantum Mesoscopic Physics Poster Transport Spectroscopy of Semiconducting Superconducting Nanowire Hybrid Devices 16.03.2019 La Thuile, Italy Schönenberger Christian; Nilsson Malin; Jünger Christian;
GDR 2426 Physique Quantique Mésoscopique Talk given at a conference Van Hove singularity probed by supercurrent measurement in a graphene-hBN superlattice 03.12.2018 Centre Paul Langevin du CNRS à Aussois, France Delagrange Raphaelle;
GDR 2426 - PHYSIQUE QUANTIQUE MESOSCOPIQUE Talk given at a conference Van Hove Singularity Probed by Supercurrent Measurement in a Graphene hBN Superlattice 03.12.2018 Aussois, France Schönenberger Christian; Delagrange Raphaelle;
Nanowire Week 2019 Poster Electrical Prperties of Integrated InAs/InP Heterostructure Quantum Dots 26.09.2018 Pisa, Italy Jünger Christian; Nilsson Malin; Thomas Frederick; Schönenberger Christian;
Graphene Week 2018 Poster Van Hove Singularity Probed by Supercurrent Measurement in a Graphebe hBN Superlattice 10.09.2018 San Sebastian, Spain Delagrange Raphaelle; Schönenberger Christian;
34th Int. Conference on the Physics of Semiconductors ICPS-2018 Talk given at a conference Zero-Dimensional Superconducting Side Contacts to Fully hBN-Encapsulated Carbon Nanotubes (talk presented by A. Baumgartner) 29.08.2018 Montpellier, France Abulizi Gulibusitan; Schönenberger Christian;
Journées de la Matière Condensée 2018 Talk given at a conference Van Hove Singularity Probed by Supercurrent Meausurement in a Graphen h-BN Superlattice 28.08.2018 Grenoble, France Schönenberger Christian; Delagrange Raphaelle;
Topological Matter School 2018 Poster Towards Exotic Topological States in Paralle Semiconductor Nanowires 27.08.2018 San Sebastian, Spain Jünger Christian; Schönenberger Christian;
34th Int. Conference on the Physics of Semiconductors ICPS-2018 Talk given at a conference Van Hove Singularity probed by Supercurrent Measurement in a Graphene hBN Superlattice 29.07.2018 Montpellier, France Delagrange Raphaelle; Schönenberger Christian;
Quantum Designer Physics (QDP2018) Poster Engineering Exotic States in Graphene Heterostructures 16.07.2018 San Sebastian, Spain Delagrange Raphaelle; Schönenberger Christian;
Quantum Designer Physics (QDP2018) Talk given at a conference Proximity Spin-Orbit Coupling and Supercurrent in van der Waals Heterostructures 16.07.2018 San Sebastian, Spain Schönenberger Christian;
The Capri Spring School on Transport in Nanostructures 2018 Poster Probing Topological Superconductivity with Noise Measurements 15.04.2018 Anacapri, Italy Schönenberger Christian; Haller Roy;
The Capri Spring School on Transport in Nanostructures 2018 Talk given at a conference Edge Current in hBN-Graphene Moiré Superlattice 15.04.2018 Anacapri, Italy Delagrange Raphaelle; Schönenberger Christian;
30 ans IPCMS: Institut De Physique et Chimie des Materiaux de Strasbourg Talk given at a conference Quantum Transport in 2D vdWaal’s systems: from Graphene to TMDC heterostructures 05.04.2018 Strasbourg, France Schönenberger Christian;
New Developments in Solid-State Physics Talk given at a conference Conductance Oscillations along PN-Junctions in Graphene due to Isospin, Snake/Skipping and Aharonov-Bohm Physics 25.02.2018 Mauterndorf, Austria Schönenberger Christian;
20th International Winterschool on New Developments in Solid State Physics Talk given at a conference Conductance Oscillations along PN-Junctions in Graphene due to Isospin, Snake/Skipping and Aharanov-Bohm Physics 25.02.2018 Mauterndorf, Austria Schönenberger Christian;
Nano in the Snow (SNI PhD school) Talk given at a conference Cooper-pairs are nice, but split ones too! 17.01.2018 Mürren, Switzerland Schönenberger Christian;
Graphene Week Poster Superconducting Proximity Effect in a Graphene Superlattice 25.09.2017 Athenes, Greece Delagrange Raphaelle; Schönenberger Christian;
DFG Research Training Group GRK 1570 Workshop on Electronic Properties of Carbon Based Nanostructures Talk given at a conference Cooper pair splitter 18.09.2017 Rattenberg, Germany Schönenberger Christian;
Int. Summer School on Quantum Transport in Topological Materials Poster Detection of Topological Superconductivity via Phase Tunable Noise in Josephson Junctions and Blocking States and Cotunneling inside Coulombn Blockade 04.09.2017 Miraflores de la Sierra, Spain Haller Roy; Schönenberger Christian;
Int. Summer School on Quantum Transport in Topological Materials Poster Cooper-pair Splitting on Superconducting InAs Double Nanowire Junctions 04.09.2017 Miraflores de la Sierra, Spain Jünger Christian; Schönenberger Christian;
QTC2017 Talk given at a conference Zero-Dimensional Side Contacts to hBN-Encapsulated Carbon Nanotubes 05.08.2017 Espoo, Finland Schönenberger Christian; Abulizi Gulibusitan;
Electronic Properrties of Two-Dimensional Systems Poster Observation of Crossed Andreev Reflection in Superconductor InAs Double Nanowire Junctions 31.07.2017 Penn State University, United States of America Schönenberger Christian; Jünger Christian;
Rencontres du Vietnam on Nanophysics: from Fundamentals to Applications Poster Superconducting Proximity Effect in a Graphene Superlattice 30.07.2017 Quy Nhon, Vietnam Schönenberger Christian; Delagrange Raphaelle;
XIII Rencontres du Vietnam on nanophysics: from Fundamentals to Applications Talk given at a conference Quantum Transport along PN-Junctions in Ballistic Graphene 30.07.2017 Quy Nhon, Vietnam Schönenberger Christian;
Majorana States in Condensed Matter Talk given at a conference Andreev Bound States in Three-Terminal Quantum Dots (presented by A. Baumgartner) 14.05.2017 Mallorca, Spain Schönenberger Christian;
Int. Conference on Topological Materials Science Poster Cooper-Pair Splitter Realized in Superconductor-InAs Double Nanowire Junctions 10.05.2017 Tokyo, Japan Jünger Christian; Schönenberger Christian;
The Capri Spring School on Transport in Nanostructures 2017 Talk given at a conference Towards Synthetic Spin-Orbit Interaction in InAs Nanowires usig Ferromagnetic Side-Gates 23.04.2017 Anacapri, Italy Bordoloi Arunav; Schönenberger Christian;


Self-organised

Title Date Place
The development of cryo-electron microscopy in honor of Prof. Jacques Dubochet 11.04.2018 Basel, Switzerland

Knowledge transfer events



Self-organised

Title Date Place
Nano-Tech Apéro (Informations und Nettworking Event) 2019 29.10.2019 Baden-Dätwil, Switzerland
User Event 2019 of the Nano Imaging Lab 13.06.2019 Universität Basel, Switzerland
Nano-Tech Apéro (Informations und Nettworking Event) 2018 14.11.2018 Kaiseraugst, Switzerland
Nano-Tech Event 2018 15.02.2018 Windisch, Switzerland
Trends in Micro Nano 11.11.2017 Basel, Switzerland

Communication with the public

Communication Title Media Place Year
Talks/events/exhibitions Tun Basel 2019 (Messe Basel) German-speaking Switzerland Western Switzerland 2019
Talks/events/exhibitions Mit dem Rasterkraftmikroskop auf Entdeckungsreise in die Nanowelt German-speaking Switzerland 2018
Talks/events/exhibitions Science Days (Europark Rust) German-speaking Switzerland International Western Switzerland 2018

Associated projects

Number Title Start Funding scheme
150774 Quantum Entanglement in Nanoelectronic Devices by Noise Measurements 01.01.2014 R'EQUIP
160152 Quantentransport Phänomene in Nanostrukturierten Devices 01.04.2015 Project funding (Div. I-III)
192027 Quantum-Transport Phenomena in Hybrid Devices based on Nanowires *new* 01.04.2020 Project funding (Div. I-III)
175341 Topological quantum states in double nanowire devices 01.04.2018 ERA-NET

Abstract

A large excitement arose recently in solid-state physics when it was realized that quasi-particles with unconventional properties can appear in edge-states of topological insulators (TI) coupled to a superconductor (SC). The typical TI material is a bulk three-dimensional (3D) crystal or a two-dimensional (2D) film, where, for example, a quantum spin-Hall state can emerge. However, TI have also been considered in one dimension (1D). A particular clean example is a tight-binding chain, the so-called Kitaev chain, of spin-less electrons that are pairwise coupled by a SC. Under appropriate conditions two excitations located at the end of chain appear with properties of a Majorana particle, a particle that is its own antiparticle and referred in this context as Majorana bound-state (MBS). The Kitaev chain has been realized in semiconducting nanowires (SNWs) with large spin-orbit interaction, such as InAs and InSb, and experimental evidence for MBSs is slowly accumulating. Since we have many years of experience in realizing and studying multi-terminal hybrid devices with superconducting contacts, and since there are currently much more theoretical proposals for testing properties of MBSs than actual experiments, we plan with this proposal to embark on this. Both SNWs and carbon nanotubes (CNTs) will form the basis to engineer and explore topological properties. We will in particular study the MBS with high-spectral resolution using quantum-dot based tunneling spectroscopy. We will explore non-local properties in multiterminal devices, compare Andreev-bound states with MBSs and search for, as well as engineer, helical gaps using both intrinsic and synthetic spin-orbit interaction realized by either ferromagnetic side-gates or through hyperfine interaction that can drive a spin-helical state. In addition to conventional DC transport measurements, we will study high-frequency properties, such as the RF admittance, noise properties in novel geometries, such as the phase-controlled Majorana charge-box.
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