Evidence of 3D Dirac dispersion in PbSnSe by the de Haas - van Alphen oscillations (CROSBI ID 631011)
Prilog sa skupa u zborniku | sažetak izlaganja sa skupa | međunarodna recenzija
Podaci o odgovornosti
Mario Novak, Filip Orbanić, Mirko Baćani, Ivan Kokanović
engleski
Evidence of 3D Dirac dispersion in PbSnSe by the de Haas - van Alphen oscillations
Single crystals of mixed chalcogenide PbSnSe in composition Pb0.83Sn0.17Se is predicted to be a 3D Dirac semimetal. Materials with a 3D linear band dispersion represent a novel class of material which is an extension of the well- known 2D Dirac dispersion in graphene. Recently predicted and discovered materials with the 3D Dirac dispersion are Cd2As3, Na3Bi and topological insulators at the topological phase transition, of which PbSnSe is an example. By SQUID magnetometry up to 5T we have observed well-defined de Haas von Alphon oscillations. Temperature analysis of the dHvA oscillations allowed us to find microscopic parameters such as the scattering time, effective mass and charge concentration. Analyzing the phase of dHvA oscillations we observed the π-Berry phase shift which is a result of the linear band dispersion.
Dirac Semimetals; SdH Oscillations
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Podaci o prilogu
2015.
objavljeno
Podaci o matičnoj publikaciji
EMRS 2015 Spring Meeting
Podaci o skupu
European Materials Research Society 2015
predavanje
11.04.2015-15.04.2015
Lille, Francuska