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NovelTopo

Novel topological phases of matter: From topological invariants to experiments

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EC-Contrib. €

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Partnership

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 NovelTopo project word cloud

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

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Project "NovelTopo" data sheet

The following table provides information about the project.

Coordinator
THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD 

Organization address
address: WELLINGTON SQUARE UNIVERSITY OFFICES
city: OXFORD
postcode: OX1 2JD
website: www.ox.ac.uk

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 United Kingdom [UK]
 Project website http://dipc.ehu.es/ferdejuan/
 Total cost 195˙454 €
 EC max contribution 195˙454 € (100%)
 Programme 1. H2020-EU.1.3.2. (Nurturing excellence by means of cross-border and cross-sector mobility)
 Code Call H2020-MSCA-IF-2015
 Funding Scheme MSCA-IF-EF-ST
 Starting year 2016
 Duration (year-month-day) from 2016-09-01   to  2019-02-16

 Partnership

Take a look of project's partnership.

# participants  country  role  EC contrib. [€] 
1    THE CHANCELLOR, MASTERS AND SCHOLARS OF THE UNIVERSITY OF OXFORD UK (OXFORD) coordinator 195˙454.00

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 Project objective

Topological phases are exotic states of quantum matter characterized by a topological invariant of their ground state that guarantees the existence of unusual surface or edge modes with many special properties. In the last decade, the discovery of topological insulators has lead to a revolution in this field, in a remarkable joint effort between theory and experiment. Besides realizing a novel phase of matter, these materials can be exploited for many applications like in spintronics, and can serve as a platform to realize even more exotic phases like topological superconductivity and Majorana fermions. In this project, we combine the input of very recent experimental breakthroughs with theoretical guidance to propose realistic setups to characterize and manipulate these phases.

First, we will study novel platforms for the realization and manipulation of Majorana fermions. We will study how elemental Bismuth, a trivial and well studied semimetal, may host them in vortices when interfaced with a superconductor. We will then evaluate how to manipulate them when they are coupled in a vortex lattice, proposing the use of vortex dislocations as the carriers of unpaired modes. Then we will propose topological insulator edges as platforms to study fractionalized Majorana zero modes, known as parafermions. We will analyze current experiments in strongly interacting InAs/GaSb quantum wells, evaluating the feasibility of a fractional Josephson effect. We will also propose the edges of two dimensional topological crystalline insulators such as SnTe as candidates for the formation of a fractionalized helical liquid resembling fractional quantum Hall edges. Finally, we will propose how the topological character of Weyl semimetals such as TaAs can be observed experimentally via the photogalvanic effect. A general analysis of the topological structure of photovoltaic responses will be performed to identify further robust signatures of other topological phases.

 Publications

year authors and title journal last update
List of publications.
2017 Fernando de Juan, Adolfo G. Grushin, Takahiro Morimoto, Joel E Moore
Quantized circular photogalvanic effect in Weyl semimetals
published pages: 15995, ISSN: 2041-1723, DOI: 10.1038/ncomms15995
Nature Communications 8 2019-07-25
2017 Luca Chirolli, Fernando de Juan, Francisco Guinea
Time-reversal and rotation symmetry breaking superconductivity in Dirac materials
published pages: , ISSN: 2469-9950, DOI: 10.1103/physrevb.95.201110
Physical Review B 95/20 2019-07-25
2018 Felix Flicker, Fernando de Juan, Barry Bradlyn, Takahiro Morimoto, Maia G. Vergniory, Adolfo G. Grushin
Chiral optical response of multifold fermions
published pages: , ISSN: 2469-9950, DOI: 10.1103/PhysRevB.98.155145
Physical Review B 98/15 2019-07-25
2018 Anffany Chen, R. Ilan, F. de Juan, D. I. Pikulin, M. Franz
Quantum Holography in a Graphene Flake with an Irregular Boundary
published pages: , ISSN: 0031-9007, DOI: 10.1103/physrevlett.121.036403
Physical Review Letters 121/3 2019-07-25
2018 Fernando de Juan, Jens Bardarson, Roni Ilan
Conditions for fully gapped topological superconductivity in topological insulator nanowires
published pages: , ISSN: , DOI:
2019-07-25
2018 Niels B. M. Schröter, Ding Pei, Maia G. Vergniory, Yan Sun, Kaustuv Manna, Fernando de Juan, Jonas. A. Krieger, Vicky Süss, Marcus Schmidt, Pavel Dudin, Barry Bradlyn, Timur K. Kim, Thorsten Schmitt, Cephise Cacho, Claudia Felser, Vladimir N. Strocov, Yulin Chen
Topological Semimetal in a Chiral Crystal with Large Chern Numbers, Multifold Band Crossings, and Long Fermi-arcs
published pages: , ISSN: , DOI:
2019-07-25
2019 J. -R. Soh, F. de Juan, M. G. Vergniory, N. B. M. Schröter, M. C. Rahn, D. Y. Yan, M. Bristow, P. A. Reiss, J. N. Blandy, Y. F. Guo, Y. G. Shi, T. K. Kim, A. McCollam, S. H. Simon, Y. Chen, A. I. Coldea, A. T. Boothroyd
An ideal Weyl semimetal induced by magnetic exchange
published pages: , ISSN: , DOI:
2019-07-25

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