ELFT HÍRADÓ

[tcsaba <tcsaba AT eik.bme.hu>]

                 M E G H Í V Ó - I N V I T A T I O N

    Seminar Series of the Department of Theoretical Physics at the
           Budapest University of Technology and Economics


                          László Oroszlány
      (Department of Complex Systems, Eötvös Loránd University)


           Magnetic oscillations in nodal loop semimetals

Weyl semimetals, three dimensional materials with gapless excitations 
characterized by an effective Weyl Hamiltonian, are the tree dimensional 
generalizations of graphene. In connection with the recent rush to find 
condensed matter realizations of this new phase of matter another 
equally intriguing novel topological phase has been discovered: nodal 
line semimetals. In these systems the conduction and valence band touch 
each other along a line. This line can take a form of a loop or extend 
trough the whole  Brillouin zone. Systems with many lines entangled with 
each other were also predicted to exist.
In this talk we shall first review how this novel phase was discovered 
in the turbulent rush towards finding novel topological phases. We 
conclude by examining experimental signatures characteristic to this 
exotic state of matter mainly focusing on magnetic oscillation spectra.


Időpont: 2018. április 13. péntek, 10:15
Helyszín: BME Fizikai Intézet, Elméleti Fizika Tanszék,
Budafoki út 8. F-épület, III lépcsőház, szemináriumi szoba