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Эта публикация цитируется в 10 научных статьях (всего в 10 статьях)
КОНДЕНСИРОВАННОЕ СОСТОЯНИЕ
Effect of magnetic field on the intermediate phase in Mn$_{1-x}$Fe$_{x}$Si: spin-liquid vs. fluctuations scenario
S. V. Demishevab, I. I. Lobanovaab, A. V. Bogacha, V. V. Glushkovab, V. Yu. Ivanova, T. V. Ischenkoa, N. A. Samarina, N. E. Sluchankoa, S. Gabanic, E. Čižmárd, K. Flachbartc, N. M. Chubovae, V. A. Dyadkinef, S. V. Grigorieve a Prokhorov General Physics Institute of RAS, 119991 Moscow, Russia
b Moscow Institute of Physics and Technology, 141700 Dolgoprudny, Russia
c Institute of Experimental Physics SAS, 040 01 Košice, Slovak Republic
d P.J. Šafárik Univesity in Kožice, SK-04001 Kožice, Slovak Republic
e Petersburg Nuclear Physics Institute, 188300 Gatchina, Russia
f Swiss-Norwegian Beamlines at the European Synchrotron Radiation Facility, 38000 Grenoble, France
Аннотация:
We report results of the magnetic field influence on the chiral spin liquid state in Mn$_{1-x}$Fe$_x$Si single crystal with iron content $x=0.108$ in proximity of a hidden quantum critical point. The use of small angle neutron scattering data together with magnetic susceptibility measurements down to $0.4$ K and precise magnetoresistance measurements in the temperature range $2$–$20$ K in magnetic field up to $5$ T allowed us to construct the magnetic phase diagram of this compound in which at low magnetic fields $B<0.15$ T an intermediate phase with short-range magnetic order exists in a wide temperature range $0.62<T<9.1\,$K. It was found that the increase of magnetic field first results in a suppression of transition into spiral phase with long-range magnetic order at very low temperatures, and then induces a transition of the intermediate phase into a spin-polarized (ferromagnetic) phase with lowering temperature. The temperature of this transition $T_{\text{SP}}$ increases with magnetic field logarithmically, $T_{\text{SP}}\sim\log(B)$, and results in formation of a singular point on the magnetic phase diagram located at $T\sim8.5$ K and $B\sim3.5$ T, which may be either a triple or a critical point. The possible spin-liquid nature of the intermediate phase is discussed.
Поступила в редакцию: 01.12.2015 Исправленный вариант: 18.01.2016
Образец цитирования:
S. V. Demishev, I. I. Lobanova, A. V. Bogach, V. V. Glushkov, V. Yu. Ivanov, T. V. Ischenko, N. A. Samarin, N. E. Sluchanko, S. Gabani, E. Čižmár, K. Flachbart, N. M. Chubova, V. A. Dyadkin, S. V. Grigoriev, “Effect of magnetic field on the intermediate phase in Mn$_{1-x}$Fe$_{x}$Si: spin-liquid vs. fluctuations scenario”, Письма в ЖЭТФ, 103:5 (2016), 365–371; JETP Letters, 103:5 (2016), 321–327
Образцы ссылок на эту страницу:
https://www.mathnet.ru/rus/jetpl4883 https://www.mathnet.ru/rus/jetpl/v103/i5/p365
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