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TopSupra SIGNED

Engineered Topological Superconductivity in van der Waals Heterostructures

Total Cost €

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EC-Contrib. €

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Partnership

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 TopSupra project word cloud

Explore the words cloud of the TopSupra project. It provides you a very rough idea of what is the project "TopSupra" about.

spin    transition    enabled    insulators    manipulation    induce    particle    manner    ferromagnets    metal    nature    nanowires    interaction    charge    valley    superconductivity    splitters    prove    emission    layered    few    tuning    pairing    dressing    effect    pinned    noise    realized    pair    versatile    carry    photon    cooper    bandstructure    parafermions    symmetry    surface    pf    engineered    waals    mobility    versatility    beneficial    zeeman    single    energy    negative    local    tunneling    scaling    orbit    topological    perspectives    techniques    layer    mfs    anomalous    strain    materials    ti    hall    dichalcogenide    majorana    der    conducting    graphene    hole    insulator    networks    purpose    stead    van    chiral    computing    nor    combining    unprecedented    quantum    abelian    gap    edge    spectroscopy    add    superconductors    floquet    2d    pfs    fermions    scs    mf    exotic    heterostructure    quasiparticles    inverted    bandgap    platform    frequency    found    zero    couple    expertise    obtaining   

Project "TopSupra" data sheet

The following table provides information about the project.

Coordinator
UNIVERSITAT BASEL 

Organization address
address: PETERSPLATZ 1
city: BASEL
postcode: 4051
website: www.unibas.ch

contact info
title: n.a.
name: n.a.
surname: n.a.
function: n.a.
email: n.a.
telephone: n.a.
fax: n.a.

 Coordinator Country Switzerland [CH]
 Total cost 2˙497˙577 €
 EC max contribution 2˙497˙577 € (100%)
 Programme 1. H2020-EU.1.1. (EXCELLENT SCIENCE - European Research Council (ERC))
 Code Call ERC-2017-ADG
 Funding Scheme ERC-ADG
 Starting year 2018
 Duration (year-month-day) from 2018-07-01   to  2023-06-30

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    UNIVERSITAT BASEL CH (BASEL) coordinator 2˙497˙577.00

Map

 Project objective

Topological matter is a new research focus with great perspectives. These are insulators with an inverted “negative” bandgap and a conducting surface state. While the surface state in a topological insulator (TI) is composed of chiral fermions carrying charge and spin, in topological superconductors it is pinned to zero energy due to particle-hole symmetry and composed of fermions that carry neither charge nor spin. In-stead, they are non-abelian fermions, Majorana and parafermions (MF/PF), that have been proposed for topological quantum computing. Evidence for MFs have been found in nanowires. However, the scaling-up challenge requires a platform in which networks of MFs can be realized. Here, we propose to use graphene-based van der Waals heterostructure for this purpose. The unprecedented versatility is enabled by combining high-mobility graphene with other layered materials, such as transition-metal dichalcogenide, few-layer ferromagnets and superconductors (SCs). This allows to design topological systems, e.g. the quantum spin, anomalous and valley Hall effect, by combining Zeeman energy, spin-orbit and pairing interaction. We will design 2D quantum matter using different approaches, including strain tuning and the dressing of the bandstructure by photon-fields (Floquet TI), and couple it to SCs to induce topological superconductivity. We will use our expertise from studies of Cooper-pair splitters to not only add pairing in a single edge-state, but also between different edge-states, beneficial in obtaining MFs and more exotic quasiparticles. We will apply advanced high-frequency techniques, e.g. emission and noise - in addition to local tunneling spectroscopy - to characterize the in-gap states and to prove their topological nature. We will deliver a versatile technology with which new states of matter can be obtained in a platform which can be engineered in a top-down manner into networks allowing for quantum-state manipulation of MFs and PFs.

 Publications

year authors and title journal last update
List of publications.
2018 David Indolese, Simon Zihlmann, Péter Makk, Christian Jünger, Kishan Thodkar, Christian Schönenberger
Wideband and On-Chip Excitation for Dynamical Spin Injection into Graphene
published pages: , ISSN: 2331-7019, DOI: 10.1103/physrevapplied.10.044053
Physical Review Applied 10/4 2020-01-30
2019 Lujun Wang, Simon Zihlmann, Andreas Baumgartner, Jan Overbeck, Kenji Watanabe, Takashi Taniguchi, Péter Makk, Christian Schönenberger
In Situ Strain Tuning in hBN-Encapsulated Graphene Electronic Devices
published pages: 4097-4102, ISSN: 1530-6984, DOI: 10.1021/acs.nanolett.9b01491
Nano Letters 19/6 2020-01-30
2018 Péter Makk, Clevin Handschin, Endre Tóvári, Kenji Watanabe, Takashi Taniguchi, Klaus Richter, Ming-Hao Liu, Christian Schönenberger
Coexistence of classical snake states and Aharonov-Bohm oscillations along graphene p − n junctions
published pages: , ISSN: 2469-9950, DOI: 10.1103/physrevb.98.035413
Physical Review B 98/3 2020-01-30
2019 Simon Zihlmann, Péter Makk, Sebastián Castilla, Jörg Gramich, Kishan Thodkar, Sabina Caneva, Ruizhi Wang, Stephan Hofmann, Christian Schönenberger
Nonequilibrium properties of graphene probed by superconducting tunnel spectroscopy
published pages: , ISSN: 2469-9950, DOI: 10.1103/PhysRevB.99.075419
Physical Review B 99/7 2020-01-30
2019 Minkyung Jung, Peter Rickhaus, Simon Zihlmann, Alexander Eichler, Peter Makk, Christian Schönenberger
GHz nanomechanical resonator in an ultraclean suspended graphene p–n junction
published pages: 4355-4361, ISSN: 2040-3364, DOI: 10.1039/c8nr09963d
Nanoscale 11/10 2020-01-30
2018 D. I. Indolese, R. Delagrange, P. Makk, J. R. Wallbank, K. Wanatabe, T. Taniguchi, C. Schönenberger
Signatures of van Hove Singularities Probed by the Supercurrent in a Graphene-hBN Superlattice
published pages: , ISSN: 0031-9007, DOI: 10.1103/PhysRevLett.121.137701
Physical Review Letters 121/13 2020-01-30
2019 Lujun Wang, Simon Zihlmann, Ming-Hao Liu, Péter Makk, Kenji Watanabe, Takashi Taniguchi, Andreas Baumgartner, Christian Schönenberger
New Generation of Moiré Superlattices in Doubly Aligned hBN/Graphene/hBN Heterostructures
published pages: 2371-2376, ISSN: 1530-6984, DOI: 10.1021/acs.nanolett.8b05061
Nano Letters 19/4 2020-01-30

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