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[Fizinfo] [Seminar] WIGNER SZFI Seminar, 20 Feb - Oroszlány László

From: Szeminárium koordinátor <szfi-seminar AT wigner.mta.hu>
To: Szeminárium <seminar AT szfki.hu>
Subject: [Fizinfo] [Seminar] WIGNER SZFI Seminar, 20 Feb - Oroszlány László
Date: Thu, 15 Feb 2018 06:26:01 +0100 (CET)
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WIGNER SZFI Seminar

A new class of topological materials: nodal line semimetals

Oroszlány László
ELTE TTK, Komplex Rendszerek Fizikája tanszék (host: Asbóth János)

Tuesday, 20 February 2018 10:00, KFKI Campus, Bldg. 1, 2nd floor, Conference Room

Weyl semimetals, three dimensional materials with gapless excitations characterized by an effective Weyl Hamiltonian, are the three 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 the form of a loop or extend across the whole Brillouin zone. Systems with many lines entangled with each other are also predicted to exist.
In this talk I shall first review how this novel phase was discovered in the turbulent rush towards finding novel topological phases. I conclude by examining experimental signatures characteristic to this exotic state of matter mainly focusing on magnetic oscillation spectra.

Everyone is welcome to attend.

János Asbóth
szfi-seminar AT wigner.mta.hu

[Fizinfo] [Seminar] WIGNER SZFI Seminar, 20 Feb - Oroszlány László, Szeminárium koordinátor, 02/15/2018