Doctoral Student

Universities and Institutes of Czech

Czech Republic

December 5, 2021

Description

  • Organisation/Company: Charles University
  • Research Field: Physics › Surface physics
  • Researcher Profile: First Stage Researcher (R1)
  • Application Deadline: 05/12/2021 12:00 - Europe/Brussels
  • Location: Czech Republic › Prague
  • Job Status: Full-time
  • Hours Per Week: 40
  • Offer Starting Date: 01/03/2022
  • Polarons and Polarization in Perovskites

    Polarons are quasiparticles that originate from coupling of excess electrons or holes with lattice vibrations 1. They play a central role in many materials properties, such as electric transport, optical properties, surface reactivity, superconductivity or magnetoresistance. Certain types of polarons (small polarons) can localize at a single lattice site, become immobile and exhibit hopping motion. The task of this Thesis is using the noncontact Atomic Force Microscopy to observe these localized polarons and investigate their hopping kinetics induced by thermal fluctuations, light or tip's electric field. The system of choice will be mainly perovskites that are close to the ferroelectric state, namely titanates and tantalates for (KTaO3, KNbO3, SrTiO3 or BaTiO3). A part of the challenge lies in distinguishing the polarons from ferroelectric polarization, which is easily induced by the tip.

    The candidate will be encouraged to spend at least 6 months abroad with one of our collaborators in Austria, Germany or Japan.

    1 C. Franchini, M. Reticcioli, M. Setvin, U. Diebold, Neture Reviews Materials 6, 560 (2021)

    For more info about us, see

    https: // physics.mff.cuni.cz/kfpp/vrstvy/01News.html

    and https: // physics.mff.cuni.cz/kfpp/phdweb/#

    Monthly net salary of 1200-1300 EUR

    Offer Requirements
  • REQUIRED LANGUAGES
  • ENGLISH: Good

    Skills/Qualifications

    Master degree in Physics, Chemistry, Materials Research or a similar field

    Contact Information
  • Organisation/Company: Charles University
  • Department: Department of Surface and Plasma Physics - Thin Films Group
  • Organisation Type: Higher Education Institute
  • Website: https: // physics.mff.cuni.cz/kfpp/vrstvy/01News.html
  • E-Mail: martin.setvin@mff.cuni.cz
  • Country: Czech Republic
  • City: Prague
  • Postal Code: 1080
  • Street: V Holesovickach 2
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