Energy spectrum of basic electrons in Pb1–<i>x</i>Sn<i>x</i>Te in the vicinity of the magnetic phase transition
Yu. A. BratashevskiiPhysicotechnical Institute of the Academy of Sciences of the Ukrainian SSR, DonetskV. D. Prozorovskiı̆Physicotechnical Institute of the Academy of Sciences of the Ukrainian SSR, DonetskYu. S. KharionovskiiPhysicotechnical Institute of the Academy of Sciences of the Ukrainian SSR, Donetsk
ABI
Abstract
Independent studies of diamagnetic resonance and dispersion of helicon waves revealed a marked rearrangement of the energy spectrum of basic electrons in n-type Pb1–xSnxTe single-crystal specimens in the vicinity of the ferromagnetic ordering of the system in the temperature range from 1.7 to 8°K. When the specimens are heated by 3 to 4°K, the coefficient of effective-mass anisotropy more than doubles and the transverse effective electron mass decreases by more than 30%.
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