Spin Glass State in Iron-Doped Bi2Fe0.128Te2.844Se0.145 Topological Insulator

Liudmila I. Koroleva; Artiom S. Morozov; Sergey F. Marenkin; Irina V. Fedorchenko; Rhita A. Szymczak

doi:10.4028/www.scientific.net/SSP.215.127

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Spin Glass State in Iron-Doped Bi₂Fe_0.128Te_2.844Se_0.145 Topological Insulator
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First Principles Calculations of Magnetic Exchange Parameters of Fe-Mn-Al Heusler Alloys
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HomeSolid State PhenomenaSolid State Phenomena Vol. 215Spin Glass State in Iron-Doped...

Spin Glass State in Iron-Doped Bi₂Fe_0.128Te_2.844Se_0.145 Topological Insulator

Abstract:

The researching of dependence of magnetization from temperature T and magnetic field in the Bi₂Fe_0.128Te_2.844Se_0.145 single-crystal showed that it have spinglass-like state with freezing temperature T_f= 40 K. Its electric resistance up to 100 K is ~ 10³ Ohm and decreases with the temperature increase. At T > 110 K electric resistance ~ 10^-2 Ohm and magnetization is four times smaller than in spinglass-like state. It can be assumed from these results that this sample is topological insulator at T > 110 K and at small temperature, where it is spinglass-like, offers the breaking of the time reversal symmetry.

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Solid State Phenomena (Volume 215)

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127-130

DOI:

https://doi.org/10.4028/www.scientific.net/SSP.215.127

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Online since:

April 2014

Authors:

Liudmila I. Koroleva, Artiom S. Morozov*, Sergey F. Marenkin, Irina V. Fedorchenko, Rhita A. Szymczak

Keywords:

Insulating Bulk State, Magnetic Impurities, Magnetization, Metallic Surface States, Spin Glass State, Three-Dimensional Topological Insulators

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