Naslov
3D Dirac semimetals - Probing the Fermi surface with quantum oscillations

Autori
Orbanić, Filip ; Novak, Mario ; Biliškov, Nikola ; Kokanović, Ivan

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
Solid State Science & Research : Book of Abstracts and Programme / Juribašić Kulscar, Marina ; Halasz, Ivan - Zagreb : Institut Ruđer Bošković, 2017, 23-23

ISBN
978-953-7941-15-4

Skup
Solid State Science & Research

Mjesto i datum
Zagreb, Hrvatska, 28.06.2017. - 30.06.2017

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
3D Dirac semimetals

Sažetak
3D Dirac semimetals can be seen as 3D analogues of graphene. They possess linear band dispersion in all three dimensions (in k-space) around symmetry protected touching points of valence and conduction band (Dirac point) [1]. Because of nontrivial topology of energy bands and existence of Dirac points those materials possess fundamentally very interesting transport properties [2, 3]. In high purity monocrystalline samples and strong magnetic fields (up to 16 T) it is possible to observe the quantum oscillations in magnetization (de Haas van Alphen, dHvA, oscillations) and magnetoresitance (Subnikov de Haas, SdH, oscillations) [4]. Frequency of oscillations is directly related to the shape of the Fermi surface, and from temperature dependence of amplitude of oscillations, effective mass of carriers can be obtained. This offers a possibility of distinguishing contributions of carriers from different parts of Fermi surface. In our group we have successfully synthesized monocrystalline samples of various 3D Dirac semimetals: Cd3As2, TaP, ZrSiS, Pb0.83Sn0.17Se and measured SdH and dHvA oscillations in them. Figure de Haas van Alphen oscillations in TaP. [1] A. A. Burkov, Nat. Mat. 15 (2016) 1145. [2] J. Feng et al, Phys. Rev. B 92 (2015) 081306. [3] J. Hu et al, Sci. Rep. 6 (2016) 18674. [4] F. Orbanić, M. Novak, M. Baćani and I. Kokanović, Phys. Rev. B 95 (2017) 035208.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

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