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Strong correlation between mobility and magnetoresistance in Weyl and Dirac semimetals

MPG-Autoren
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Singh,  Sukriti
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Süß,  Vicky
Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Schmidt,  Marcus
Marcus Schmidt, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Felser,  Claudia
Claudia Felser, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Shekhar,  Chandra
Chandra Shekhar, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Singh, S., Süß, V., Schmidt, M., Felser, C., & Shekhar, C. (2020). Strong correlation between mobility and magnetoresistance in Weyl and Dirac semimetals. Journal of Physics: Materials, 3(2): 024003, pp. 1-5. doi:10.1088/2515-7639/ab6c34.


Zitierlink: https://hdl.handle.net/21.11116/0000-0009-7169-2
Zusammenfassung
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.