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TopoGraph SIGNED

Towards topological hybrid states in graphene

Total Cost €


EC-Contrib. €






 TopoGraph project word cloud

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

reflect    nanowire    relation    protection    majorana    choose    quantum    host    special    bound    correlations    fundamentals    structures    mf    2d    expertise    single    layer    experimental    combed    mfs    soi    pattern    directions    nanodevices    nanostructures    techniques    candidates    ballistic    first    secondments    inducing    zeemann    bilayer    frequency    superconductivity    existence    excitations    property    significantly    andreev    prove    sc    obey    engineer    noise    fermions    spectrum    tens    hall    career    probe    twisted    scanning    lithographically    materials    transition    phases    tunnel    micrometers    exchange    1d    concentrated    secondment    made    graphene    solid    ultra    measured    basis    tips    spectra    trained    spin    pressure    dirac    signature    platform    topological    local    wse2    computation    either    fellow    topgraph    probes    introduces    abelian    combines    hybrid    cell    fraunhofer    opens    filtering    superconducting    graphite    gun    smoking   

Project "TopoGraph" data sheet

The following table provides information about the project.


Organization address
postcode: 1111

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 Hungary [HU]
 Total cost 146˙239 €
 EC max contribution 146˙239 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2017
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2018
 Duration (year-month-day) from 2018-09-01   to  2020-08-31


Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 


 Project objective

Majorana fermions (MF) are novel excitations of solid-state nanostructures, which obey non-abelian exchange characteristics. This property, together with their topological protection made MFs candidates for basis of topological quantum computation. So far most of the experimental studies concentrated on 1D nanowire systems. In the project TopGraph we will choose a different path to engineer MFs using 2D systems. Our platform is graphene, a single layer of graphite, which has Dirac spectrum and can be ballistic over tens of micrometers. We will use two systems: 1) twisted bilayer graphene, which is driven into a special quantum Hall state (effectively a quantum spin Hall state) and 2) graphene with SOI induced by other 2D materials., e.g. WSe2 and combed with Zeemann fields. When inducing superconducting correlations to these structures the formation of MFs are expected. First, we will study SC current in these special states, where changes in the SC current and Fraunhofer pattern can reflect transition to topological phases. To prove the existence of the topological excitations, the Andreev bound state spectra of the system will be studied using local tunnel probes, either defined lithographically or using scanning tips. Finally smoking-gun signature of the topological current can be obtained from current phase relation measured using high frequency techniques (with the help of a secondment). The project combines the expertise of the fellow on graphene, with the know-how of the host on hybrid nanodevices and induced superconducting correlations. During the project the fellow will be trained by the host and the secondments in ultra-low-T measurement, scanning probe, dedicated noise filtering techniques, pressure cell studies and fundamentals of topological superconductivity. The proposal opens up new directions in topological computation in 2D materials, and introduces the fellow to this rapidly developing field, which will significantly advance his career.


year authors and title journal last update
List of publications.
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 2020-04-11
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 2020-04-11
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 2020-04-11
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 2020-04-11

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The information about "TOPOGRAPH" are provided by the European Opendata Portal: CORDIS opendata.

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