Galvanomagnetic and Magnetic Properties of Pb1-yScyTe

E.P. Skipetrov; M.M. Markina; K.V. Zakharov; L.A. Skipetrova; A.A. Solovev; A.V. Knotko; E.I. Slynko; V.E. Slynko

doi:10.4028/www.scientific.net/SSP.233-234.97

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HomeSolid State PhenomenaSolid State Phenomena Vols. 233-234Galvanomagnetic and Magnetic Properties of...

Galvanomagnetic and Magnetic Properties of Pb_1-ySc_yTe

Abstract:

The galvanomagnetic properties in weak magnetic fields (4.2≤T≤300 K, B≤0.07 T) as well as magnetic properties (2≤T≤300 K, B≤9 T) of the single-crystal Pb_1-ySc_yTe (y≤0.02) alloys have been investigated. We find that an increase of Sc impurity content leads to a monotonous growth of the free electron concentration (from 10¹⁶ cm^-3 to 10²⁰ cm^-3). In heavily doped alloys (y>0.01), it tends to saturation, indicating the pinning of the Fermi energy by the scandium resonant level located inside the conduction band. The energy of the level is estimated (E_Sc≈E_c+280 meV) and the model of electronic structure rearrangement of Pb_1-ySc_yTe alloys with doping is proposed. In the frame of this model, using experimental temperature and magnetic field dependences of magnetization, the concentrations of magnetically active scandium ions are determined and connection of the electronic structure with the magnetic properties of the alloys are discussed.

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Periodical:

Solid State Phenomena (Volumes 233-234)

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97-100

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https://doi.org/10.4028/www.scientific.net/SSP.233-234.97

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Online since:

July 2015

Authors:

E.P. Skipetrov*, M.M. Markina, K.V. Zakharov, L.A. Skipetrova, A.A. Solovev, A.V. Knotko, E.I. Slynko, V.E. Slynko

Keywords:

Electronic Structure, Fermi Level Pinning, Galvanomagnetic, Lead Telluride-Based Alloys, Magnetic Properties, Scandium Resonant Level, Transition Metal Impurities

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