Open AccessStrong correlation between mobility and magnetoresistance in Weyl and Dirac semimetals
Author(s) -
Sukriti Singh,
Vicky Süβ,
Marcus Schmidt,
Claudia Felser,
Chandra Shekhar
Publication year - 2020
Publication title -
jphys materials
Language(s) - English
Resource type - Journals
ISSN - 2515-7639
DOI - 10.1088/2515-7639/ab6c34
Subject(s) - magnetoresistance , dirac (video compression format) , semimetal , condensed matter physics , weyl semimetal , electron mobility , physics , fermion , dependency (uml) , quantum mechanics , magnetic field , band gap , computer science , neutrino , software engineering
The discovery of Weyl and Dirac fermions in solid systems is a recent major breakthrough in the field of condensed matter physics. These materials exhibit extraordinary properties in terms of carrier mobility and magnetoresistance (MR). These two quantities are highly dependent in the Weyl semimetal transition monopnictide family, i.e. NbP, TaP, NbAs, and TaAs. Furthermore, the gathered mobility and MR (or slope of MR) at 2 K in 9 T of other well-known Weyl and Dirac semimetals follow a relation similar to the right turn symbol, i.e. the MR increases rapidly with mobility; thereafter it begins to saturate after reaching a value of 10 3 . This suggests a nonlinear dependency. Nevertheless, for materials possessing high carrier mobility, it is valid to expect high MR.