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Systematic study of doping dependence on linear magnetoresistance in p -PbTe

Schneider, J. M. ; Peres, M. L. ; Wiedmann, S. ; Zeitler, U. ; Chitta, V. A. ; Abramof, E. ; Rappl, P. H. O. ; de Castro, S. ; Soares, D. A. W. ; Mengui, U. A. ; Oliveira, N. F.

Applied physics letters, 2014-10, Vol.105 (16) [Periódico revisado por pares]

Melville: American Institute of Physics

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Título:
Systematic study of doping dependence on linear magnetoresistance in p -PbTe
Autor: Schneider, J. M. ; Peres, M. L. ; Wiedmann, S. ; Zeitler, U. ; Chitta, V. A. ; Abramof, E. ; Rappl, P. H. O. ; de Castro, S. ; Soares, D. A. W. ; Mengui, U. A. ; Oliveira, N. F.
Assuntos: Applied physics ; AUGMENTATION ; BARIUM FLUORIDES ; Computer simulation ; CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY ; Dependence ; DOPED MATERIALS ; Doping ; Giant magnetoresistance ; Intermetallic compounds ; LEAD TELLURIDES ; MAGNETORESISTANCE ; Magnetoresistivity ; P-TYPE CONDUCTORS ; SIMULATION
É parte de: Applied physics letters, 2014-10, Vol.105 (16)
Descrição: We report on a large linear magnetoresistance effect observed in doped p-PbTe films. While undoped p-PbTe reveals a sublinear magnetoresistance, p-PbTe films doped with BaF2 exhibit a transition to a nearly perfect linear magnetoresistance behaviour that is persistent up to 30 T. The linear magnetoresistance slope ΔR/ΔB is to a good approximation, independent of temperature. This is in agreement with the theory of Quantum Linear Magnetoresistance. We also performed magnetoresistance simulations using a classical model of linear magnetoresistance. We found that this model fails to explain the experimental data. A systematic study of the doping dependence reveals that the linear magnetoresistance response has a maximum for small BaF2 doping levels and diminishes rapidly for increasing doping levels. Exploiting the huge impact of doping on the linear magnetoresistance signal could lead to new classes of devices with giant magnetoresistance behavior.
Editor: Melville: American Institute of Physics
Idioma: Inglês

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Systematic study of doping dependence on linear magnetoresistance in p -PbTe

Schneider, J. M. ; Peres, M. L. ; Wiedmann, S. ; Zeitler, U. ; Chitta, V. A. ; Abramof, E. ; Rappl, P. H. O. ; de Castro, S. ; Soares, D. A. W. ; Mengui, U. A. ; Oliveira, N. F.

Melville: American Institute of Physics

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