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Intrinsic instability of the helix spin structure in MnGe and order-disorder phase transition. / Altynbaev, E.; Siegfried, S. A.; Dyadkin, V.; Moskvin, E.; Menzel, D.; Heinemann, A.; Dewhurst, C.; Fomicheva, L.; Tsvyashchenko, A.; Grigoriev, S.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 90, No. 17, 174420, 17.11.2014.

Research output: Contribution to journal › Article › peer-review

Harvard

Altynbaev, E, Siegfried, SA, Dyadkin, V, Moskvin, E, Menzel, D, Heinemann, A, Dewhurst, C, Fomicheva, L, Tsvyashchenko, A & Grigoriev, S 2014, 'Intrinsic instability of the helix spin structure in MnGe and order-disorder phase transition', Physical Review B - Condensed Matter and Materials Physics, vol. 90, no. 17, 174420. https://doi.org/10.1103/PhysRevB.90.174420, https://doi.org/10.1103/PhysRevB.90.174420

APA

Altynbaev, E., Siegfried, S. A., Dyadkin, V., Moskvin, E., Menzel, D., Heinemann, A., Dewhurst, C., Fomicheva, L., Tsvyashchenko, A., & Grigoriev, S. (2014). Intrinsic instability of the helix spin structure in MnGe and order-disorder phase transition. Physical Review B - Condensed Matter and Materials Physics, 90(17), [174420]. https://doi.org/10.1103/PhysRevB.90.174420, https://doi.org/10.1103/PhysRevB.90.174420

Vancouver

Altynbaev E, Siegfried SA, Dyadkin V, Moskvin E, Menzel D, Heinemann A et al. Intrinsic instability of the helix spin structure in MnGe and order-disorder phase transition. Physical Review B - Condensed Matter and Materials Physics. 2014 Nov 17;90(17). 174420. https://doi.org/10.1103/PhysRevB.90.174420, https://doi.org/10.1103/PhysRevB.90.174420

Author

Altynbaev, E. ; Siegfried, S. A. ; Dyadkin, V. ; Moskvin, E. ; Menzel, D. ; Heinemann, A. ; Dewhurst, C. ; Fomicheva, L. ; Tsvyashchenko, A. ; Grigoriev, S. / Intrinsic instability of the helix spin structure in MnGe and order-disorder phase transition. In: Physical Review B - Condensed Matter and Materials Physics. 2014 ; Vol. 90, No. 17.

BibTeX

@article{e41da66dfb624e4e85f0a37a55543f1d,
title = "Intrinsic instability of the helix spin structure in MnGe and order-disorder phase transition",
abstract = "The magnetic structure of the cubic helimagnet MnGe was studied by small-angle neutron scattering in a wide temperature range from 10 to 300 K. We show that MnGe undergoes a complex order-disorder phase transition covering more than 100 K above the critical temperature TN=(130±2) K. Moreover, the helical structure is intrinsically unstable below TN, since the profile of the reflection at kh∼2 nm-1 associated with the spin helix can be described by the sum of Gaussian and Lorentzian contributions, indicating a stable helix and spin-helix fluctuations, respectively. The Gaussian behavior determines the system at low temperature, whereas the Lorentzian is negligible. With increasing temperature, however, the Lorentzian starts to contribute and dominates at TN. The spin-helix fluctuations are accompanied by intensive spin excitations observed in small-angle neutron scattering as Q-independent scattering at Q",
author = "E. Altynbaev and Siegfried, {S. A.} and V. Dyadkin and E. Moskvin and D. Menzel and A. Heinemann and C. Dewhurst and L. Fomicheva and A. Tsvyashchenko and S. Grigoriev",
note = "Publisher Copyright: {\textcopyright} 2014 American Physical Society.",
year = "2014",
month = nov,
day = "17",
doi = "10.1103/PhysRevB.90.174420",
language = "English",
volume = "90",
journal = "Physical Review B-Condensed Matter",
issn = "1098-0121",
publisher = "American Physical Society",
number = "17",

}

RIS

TY - JOUR

T1 - Intrinsic instability of the helix spin structure in MnGe and order-disorder phase transition

AU - Altynbaev, E.

AU - Siegfried, S. A.

AU - Dyadkin, V.

AU - Moskvin, E.

AU - Menzel, D.

AU - Heinemann, A.

AU - Dewhurst, C.

AU - Fomicheva, L.

AU - Tsvyashchenko, A.

AU - Grigoriev, S.

N1 - Publisher Copyright: © 2014 American Physical Society.

PY - 2014/11/17

Y1 - 2014/11/17

N2 - The magnetic structure of the cubic helimagnet MnGe was studied by small-angle neutron scattering in a wide temperature range from 10 to 300 K. We show that MnGe undergoes a complex order-disorder phase transition covering more than 100 K above the critical temperature TN=(130±2) K. Moreover, the helical structure is intrinsically unstable below TN, since the profile of the reflection at kh∼2 nm-1 associated with the spin helix can be described by the sum of Gaussian and Lorentzian contributions, indicating a stable helix and spin-helix fluctuations, respectively. The Gaussian behavior determines the system at low temperature, whereas the Lorentzian is negligible. With increasing temperature, however, the Lorentzian starts to contribute and dominates at TN. The spin-helix fluctuations are accompanied by intensive spin excitations observed in small-angle neutron scattering as Q-independent scattering at Q

AB - The magnetic structure of the cubic helimagnet MnGe was studied by small-angle neutron scattering in a wide temperature range from 10 to 300 K. We show that MnGe undergoes a complex order-disorder phase transition covering more than 100 K above the critical temperature TN=(130±2) K. Moreover, the helical structure is intrinsically unstable below TN, since the profile of the reflection at kh∼2 nm-1 associated with the spin helix can be described by the sum of Gaussian and Lorentzian contributions, indicating a stable helix and spin-helix fluctuations, respectively. The Gaussian behavior determines the system at low temperature, whereas the Lorentzian is negligible. With increasing temperature, however, the Lorentzian starts to contribute and dominates at TN. The spin-helix fluctuations are accompanied by intensive spin excitations observed in small-angle neutron scattering as Q-independent scattering at Q

UR - http://www.scopus.com/inward/record.url?scp=84911450879&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.90.174420

DO - 10.1103/PhysRevB.90.174420

M3 - Article

VL - 90

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 17

M1 - 174420

ER -

ID: 7033199