Objective In the past few years, a new topological phase of matter, the Weyl semimetals, has been discovered. In Weyl semimetals, the bulk band structure is characterized by pairs of Weyls cones with opposite chirality that are separated in momentum space, resembling graphene. Its non-trivial electronic structure leads to quantum anomalies and unique transport properties including an extremely high mobility, which offers not only a platform for testing relativistic theories but also a great potential for device applications. The combination of bulk-transport and topological protection currently inspires many researchers to seek novel applications of Weyl semimetals in the emerging areas of neuromorphic computing, quantum computing or reversible computing. However, the great promise of Weyl semimetals, or topological material in general, is yet to be unleashed through meaningful demonstrations of their potential in device applications.In this action, we will develop electrically-gated devices to actively control the transport properties of Weyl semimetals at IBM Research - Zurich. More precisely, we will build and test a Weyl semimetal valley filter based on a recent theoretical proposal. To do this, we will first perform extensive material characterizations and magneto-transport measurements on the candidate Weyl semimetal materials to verify sample quality and its influence on the transport properties. Afterward, we will develop the processing steps to fabricate Weyl semimetal field-effect devices with high gate control and allow incorporation of additional contact structures for valley polarization sensing. Being able to actively control the transport properties of Weyl semimetals is not only a crucial step for its application in information technology but also for probing new physics of Weyl fermions. To achieve the objectives, a secondment is planned at Max Planck-Institute for the Chemical Physics of Solids for knowledge transfer and complimentary experiments. Fields of science natural sciencesphysical sciencestheoretical physicsparticle physicsfermionsengineering and technologyelectrical engineering, electronic engineering, information engineeringelectronic engineeringcomputer hardwarequantum computers Keywords Weyl semimetal field-effect transistor valleytronics magneto-transport electrical measurement Programme(s) H2020-EU.1.3. - EXCELLENT SCIENCE - Marie Skłodowska-Curie Actions Main Programme H2020-EU.1.3.2. - Nurturing excellence by means of cross-border and cross-sector mobility Topic(s) MSCA-IF-2018 - Individual Fellowships Call for proposal H2020-MSCA-IF-2018 See other projects for this call Funding Scheme MSCA-IF - Marie Skłodowska-Curie Individual Fellowships (IF) Coordinator IBM RESEARCH GMBH Net EU contribution € 203 149,44 Address Saeumerstrasse 4 8803 Rueschlikon Switzerland See on map Region Schweiz/Suisse/Svizzera Zürich Zürich Activity type Private for-profit entities (excluding Higher or Secondary Education Establishments) Links Contact the organisation Opens in new window Website Opens in new window Participation in EU R&I programmes Opens in new window HORIZON collaboration network Opens in new window Other funding € 0,00
