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ЖУРНАЛЫ // Письма в Журнал экспериментальной и теоретической физики // Архив

Письма в ЖЭТФ, 2016, том 104, выпуск 2, страницы 114–115 (Mi jetpl5031)

Эта публикация цитируется в 11 статьях

КОНДЕНСИРОВАННОЕ СОСТОЯНИЕ

Magnetization of the Mn$_{1-x}$Fe$_x$Si in high magnetic field up to 50 T: possible evidence of a field-induced Griffiths phase

S. V. Demishevab, A. N. Samarinac, J. Huangd, V. V. Glushkovac, I. I. Lobanovaac, N. E. Sluchankoac, N. M. Chubovae, V. A. Dyadkinef, S. V. Grigorievge, M. Yu. Kaganhb, J. Vanackend, V. V. Moshchalkovd

a Prokhorov General Physics Institute of Russian Academy of Sciences, 119991 Moscow, Russia
b National Research University Higher School of Economics, 101000 Moscow, Russia
c Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia
d KU Leuven, Department of Physics and Astronomy, B-3001 Leuven, Belgium
e Petersburg Nuclear Physics Institute, 188300 Gatchina, Russia
f Swiss-Norwegian Beamlines at the European Synchrotron Radiation Facility, 38000 Grenoble, France
g Saint-Petersburg State University, 198504 St. Petersburg, Russia
h Kapitza Institute for Physical Problems of RAS, 119334 Moscow, Russia

Аннотация: Magnetic properties of single crystals of Mn$_{1-x}$Fe$_x$Si solid solutions with $x< 0.2$ are investigated by pulsed field technique in magnetic fields up to $50$ T. It is shown that magnetization of Mn$_{1-x}$Fe$_x$Si in the paramagnetic phase follows power law with the exponents $M(B) \sim B^{\alpha}$, which starts above characteristic fields $B_c\sim 1.5$$7$ T depending on the sample composition and lasts up to highest used magnetic field. Analysis of magnetization data including SQUID measurements in magnetic fields below $5$ T suggests that this anomalous behavior may be likely attributed to the formation of a field-induced Griffiths phase in the presence of spin-polaron effects.
The article is published in the original.

Поступила в редакцию: 18.05.2016
Исправленный вариант: 06.06.2016

Язык публикации: английский

DOI: 10.7868/S0370274X16140095


 Англоязычная версия: Journal of Experimental and Theoretical Physics Letters, 2016, 104:2, 116–123

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