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Critical fluctuations in MnSi near TC : A polarized neutron scattering study. / Grigoriev, S. V.; Maleyev, S. V.; Okorokov, A. I.; Chetverikov, Yu O.; Georgii, R.; Böni, P.; Lamago, D.; Eckerlebe, H.; Pranzas, K.

в: Physical Review B - Condensed Matter and Materials Physics, Том 72, № 13, 134420, 01.10.2005.

Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование

Harvard

Grigoriev, SV, Maleyev, SV, Okorokov, AI, Chetverikov, YO, Georgii, R, Böni, P, Lamago, D, Eckerlebe, H & Pranzas, K 2005, 'Critical fluctuations in MnSi near TC: A polarized neutron scattering study', Physical Review B - Condensed Matter and Materials Physics, Том. 72, № 13, 134420. https://doi.org/10.1103/PhysRevB.72.134420

APA

Grigoriev, S. V., Maleyev, S. V., Okorokov, A. I., Chetverikov, Y. O., Georgii, R., Böni, P., Lamago, D., Eckerlebe, H., & Pranzas, K. (2005). Critical fluctuations in MnSi near TC: A polarized neutron scattering study. Physical Review B - Condensed Matter and Materials Physics, 72(13), [134420]. https://doi.org/10.1103/PhysRevB.72.134420

Vancouver

Grigoriev SV, Maleyev SV, Okorokov AI, Chetverikov YO, Georgii R, Böni P и пр. Critical fluctuations in MnSi near TC: A polarized neutron scattering study. Physical Review B - Condensed Matter and Materials Physics. 2005 Окт. 1;72(13). 134420. https://doi.org/10.1103/PhysRevB.72.134420

Author

Grigoriev, S. V. ; Maleyev, S. V. ; Okorokov, A. I. ; Chetverikov, Yu O. ; Georgii, R. ; Böni, P. ; Lamago, D. ; Eckerlebe, H. ; Pranzas, K. / Critical fluctuations in MnSi near TC : A polarized neutron scattering study. в: Physical Review B - Condensed Matter and Materials Physics. 2005 ; Том 72, № 13.

BibTeX

@article{b5a55dde1634486787ae99a197750def,
title = "Critical fluctuations in MnSi near TC: A polarized neutron scattering study",
abstract = "Results of polarized neutron small angle scattering in MnSi, a cubic itinerant magnet, near Tc=28.8K are presented and analyzed. The diffuse scattering intensity looks like half-moons oriented along the incident neutron polarization. The sum of the intensities for two opposite polarizations form an anisotropic ring with weak spots, which below Tc transform into the Bragg peaks originating from the helical structure. These results are in semiquantitative agreement with the mean-field calculations based on the Bak-Jensen model that takes into account the hierarchy of the interactions: the exchange interaction, the isotropic Dzyaloshinskii-Moriya (DM) interaction and the weak anisotropic exchange (AE) interaction. The DM interaction is responsible for the scattering intensity concentrated in the half-moons. The AE interaction provides the anisotropy so that the correlation length diverges along [111] only. The corresponding critical exponent is ν=0.62(1). The exponent of the Bragg intensity due to the helical structure at T<Tc is 2β=0.44(1) where β is the exponent of the helix magnetization.",
author = "Grigoriev, {S. V.} and Maleyev, {S. V.} and Okorokov, {A. I.} and Chetverikov, {Yu O.} and R. Georgii and P. B{\"o}ni and D. Lamago and H. Eckerlebe and K. Pranzas",
year = "2005",
month = oct,
day = "1",
doi = "10.1103/PhysRevB.72.134420",
language = "English",
volume = "72",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "13",

}

RIS

TY - JOUR

T1 - Critical fluctuations in MnSi near TC

T2 - A polarized neutron scattering study

AU - Grigoriev, S. V.

AU - Maleyev, S. V.

AU - Okorokov, A. I.

AU - Chetverikov, Yu O.

AU - Georgii, R.

AU - Böni, P.

AU - Lamago, D.

AU - Eckerlebe, H.

AU - Pranzas, K.

PY - 2005/10/1

Y1 - 2005/10/1

N2 - Results of polarized neutron small angle scattering in MnSi, a cubic itinerant magnet, near Tc=28.8K are presented and analyzed. The diffuse scattering intensity looks like half-moons oriented along the incident neutron polarization. The sum of the intensities for two opposite polarizations form an anisotropic ring with weak spots, which below Tc transform into the Bragg peaks originating from the helical structure. These results are in semiquantitative agreement with the mean-field calculations based on the Bak-Jensen model that takes into account the hierarchy of the interactions: the exchange interaction, the isotropic Dzyaloshinskii-Moriya (DM) interaction and the weak anisotropic exchange (AE) interaction. The DM interaction is responsible for the scattering intensity concentrated in the half-moons. The AE interaction provides the anisotropy so that the correlation length diverges along [111] only. The corresponding critical exponent is ν=0.62(1). The exponent of the Bragg intensity due to the helical structure at T<Tc is 2β=0.44(1) where β is the exponent of the helix magnetization.

AB - Results of polarized neutron small angle scattering in MnSi, a cubic itinerant magnet, near Tc=28.8K are presented and analyzed. The diffuse scattering intensity looks like half-moons oriented along the incident neutron polarization. The sum of the intensities for two opposite polarizations form an anisotropic ring with weak spots, which below Tc transform into the Bragg peaks originating from the helical structure. These results are in semiquantitative agreement with the mean-field calculations based on the Bak-Jensen model that takes into account the hierarchy of the interactions: the exchange interaction, the isotropic Dzyaloshinskii-Moriya (DM) interaction and the weak anisotropic exchange (AE) interaction. The DM interaction is responsible for the scattering intensity concentrated in the half-moons. The AE interaction provides the anisotropy so that the correlation length diverges along [111] only. The corresponding critical exponent is ν=0.62(1). The exponent of the Bragg intensity due to the helical structure at T<Tc is 2β=0.44(1) where β is the exponent of the helix magnetization.

UR - http://www.scopus.com/inward/record.url?scp=29744471135&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.72.134420

DO - 10.1103/PhysRevB.72.134420

M3 - Article

AN - SCOPUS:29744471135

VL - 72

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 13

M1 - 134420

ER -

ID: 86432205