Effect of Pressure on Helical Ferromagnetism in MnSi / Povzner A. A.,Volkov A. G.,Yasyulevich I. A. // RUSSIAN PHYSICS JOURNAL. - 2016. - V. 59, l. 7. - P. 1002-1007.

ISSN/EISSN:

1064-8887 / 1573-9228

Type:

Article

Abstract:

Within the limits of the Hubbard model supplemented with allowance for relativistic antisymmetric Dzyaloshinskii-Moriya interaction, the spin fluctuation theory of helical band ferromagnetism is developed. The magnetic state equation is derived for the nonuniform order parameter together with expressions for the N,el temperature and the wave vector of a spin structure. The effect of pressure on the helical ferromagnetism is analyzed based on the LDA + U + SO calculations of the MnSi electronic structure at different pressures. It is shown that with increasing pressure, the effect of zero-spin fluctuations that reduce the N,el temperature is amplified, and at a pressure of 15.2 kb a quantum transition takes place accompanied by vanishing of the longrange magnetic order.

Author keywords:

helical ferromagnetism; spin fluctuations; magnetization; pressure SPIN FLUCTUATIONS; TRANSITIONS; METAL

DOI:

10.1007/s11182-016-0866-9

Web of Science ID:

ISI:000388190900013

Соавторы в МНС:

Другие поля

Поле	Значение
Month	NOV
Publisher	SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013 USA
Language	English
EISSN	1573-9228
Keywords-Plus	SPIN FLUCTUATIONS; TRANSITIONS; METAL
Research-Areas	Physics
Web-of-Science-Categories	Physics, Multidisciplinary
Author-Email	a.a.povzner@urfu.ru a.g.volkov@urfu.ru i.a.yasyulevich@urfu.ru
ResearcherID-Numbers	Povzner, Aleksandr/A-4625-2016
Funding-Acknowledgement	Ministry of Education and Science of the Russian Federation {[}3 3.1236.2014/K]
Funding-Text	This work was supported in part by the Ministry of Education and Science of the Russian Federation (Contract No. 3 3.1236.2014/K).
Number-of-Cited-References	12
Usage-Count-Last-180-days	4
Usage-Count-Since-2013	11
Journal-ISO	Russ. Phys. J.
Doc-Delivery-Number	EC5QL