Phd In Theoretical Condensed Matter Physics

Universities and Institutes of France
September 19, 2022
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Offerd Salary:Negotiation
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Contract Type:Temporary
Working Time:Full time
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  • Organisation/Company: CNRS
  • Research Field: Physics › Condensed matter properties Physics › Solid state physics Physics › Surface physics
  • Researcher Profile: First Stage Researcher (R1)
  • Application Deadline: 19/09/2022 23:59 - Europe/Brussels
  • Location: France › ORSAY
  • Type Of Contract: Temporary
  • Job Status: Full-time
  • Hours Per Week: 35
  • Offer Starting Date: 01/12/2022
  • The PhD will be hold in the theory team of the Laboratoire de Physique des Solides (CNRS and University Paris-Saclay)

    Theoretical study of quantum bound states in Dirac materials

    Graphene started a revolution in research of atomic layers that are today focused on transition metal dichalcogenide (TMD) materials, which show signatures of various quantum topological electron states, either insulating or superconducting. A key question is how to exploit the electronic band structure in these states to build useful quantum quasiparticles, for example, in superconductors one may seek Majorana bound states whose braiding would enable quantum computation, or in insulators one may seek fractionalized bound states which may form qubits or may participate in exotic collective states. Recently it was shown that the electric charge around atomic defects in graphene reveals the Dirac-electron semiconducting band structure of graphene 1. In contrast to graphene, TMD materials have strong spin-orbit coupling that leads to some topological insulating and some exotic superconducting states. We have shown theoretically that atomic defects may produce fractionalized bound states in topological insulators 2, as well as produce Majorana bound states in superconductors with spin-orbit coupling 3. Although various kinds of defects in TMD materials were recognized as important for their overall electric and magnetic behavior, the various bound states on defects are not understood in detail. During this PhD, the student will characterize the local charge and spin dynamics of various impurities and lattice defects in models of TMD insulators. Quantum bound states will be studied using analytical calculations in low-energy Dirac-like theories, complemented with numerical lattice model calculations. We will also consider superconducting TMDs, and the impact of both band structure and superconducting pairing on the bound states, in selfconsistent calculations. Based on collaboration with experiments on the Saclay Plateau studying atomic-scale spin dynamics, there is a possibility to expand the work onto topological endstates of chains of impurities. 1 Dutreix, C., et al. Nature 574, 219–222 (2019). 2 Juričić, V., Mesaros A., et al. Phys. Rev. Lett. 108, 106403 (2012). 3 Ménard, G.C., Mesaros, A., et al. Nat Commun 10, 2587 (2019). Profile: Condensed matter theory, band topology, Dirac electrons, structural defects.

    Web site for additional job details

    https: // emploi.cnrs.fr/Offres/Doctorant/UMR8502-PASSIM-002/Default.aspx

    Required Research Experiences
  • RESEARCH FIELD
  • Physics › Condensed matter properties

  • YEARS OF RESEARCH EXPERIENCE
  • None

  • RESEARCH FIELD
  • Physics › Solid state physics

  • YEARS OF RESEARCH EXPERIENCE
  • None

  • RESEARCH FIELD
  • Physics › Surface physics

  • YEARS OF RESEARCH EXPERIENCE
  • None

    Offer Requirements
  • REQUIRED EDUCATION LEVEL
  • Physics: Master Degree or equivalent

  • REQUIRED LANGUAGES
  • FRENCH: Basic

    Contact Information
  • Organisation/Company: CNRS
  • Department: Laboratoire de Physique des Solides
  • Organisation Type: Public Research Institution
  • Website: https:// www. lps.u-psud.fr/
  • Country: France
  • City: ORSAY
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