Hidden quantum phase transition in Mn1-xFexGe evidenced by small-angle neutron scattering

E. Altynbaev, S.-A. Siegfried, E. Moskvin, D. Menzel, C. Dewhurst, A. Heinemann, A. Feoktystov, L. Fomicheva, A. Tsvyashchenko, S. Grigoriev

Результат исследований: Научные публикации в периодических изданияхстатья

9 Цитирования (Scopus)

Выдержка

The magnetic system of the Mn1−xFexGe solid solution is ordered in a spiral spin structure in the whole concentration range of x∈[0÷1]. The close inspection of the small-angle neutron-scattering data reveals the quantum phase transition from the long-range ordered to short-range ordered helical structure upon increase of Fe concentration at x∈[0.25÷0.4]. The short-range order (SRO) of the helical structure is identified as a Lorentzian contribution, while long-range order is associated with the Gaussian contribution into the scattering profile function. The scenario of the quantum phase transition with x as a driving parameter is similar to the thermal phase transition in pure MnGe. The quantum nature of the SRO is proved by the temperature-independent correlation length of the helical structure at low- and intermediate-temperature ranges with remarkable decrease above certain temperature TQ. We suggest the x-dependent modification of the effective Ruderman-Kittel-Kasuya-Yosida exchange interaction within the
Язык оригиналане определен
Страницы (с-по)174403
ЖурналPhysical Review B - Condensed Matter and Materials Physics
Том94
Номер выпуска17
DOI
СостояниеОпубликовано - 2016

Цитировать

Altynbaev, E. ; Siegfried, S.-A. ; Moskvin, E. ; Menzel, D. ; Dewhurst, C. ; Heinemann, A. ; Feoktystov, A. ; Fomicheva, L. ; Tsvyashchenko, A. ; Grigoriev, S. / Hidden quantum phase transition in Mn1-xFexGe evidenced by small-angle neutron scattering. В: Physical Review B - Condensed Matter and Materials Physics. 2016 ; Том 94, № 17. стр. 174403.
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abstract = "The magnetic system of the Mn1−xFexGe solid solution is ordered in a spiral spin structure in the whole concentration range of x∈[0÷1]. The close inspection of the small-angle neutron-scattering data reveals the quantum phase transition from the long-range ordered to short-range ordered helical structure upon increase of Fe concentration at x∈[0.25÷0.4]. The short-range order (SRO) of the helical structure is identified as a Lorentzian contribution, while long-range order is associated with the Gaussian contribution into the scattering profile function. The scenario of the quantum phase transition with x as a driving parameter is similar to the thermal phase transition in pure MnGe. The quantum nature of the SRO is proved by the temperature-independent correlation length of the helical structure at low- and intermediate-temperature ranges with remarkable decrease above certain temperature TQ. We suggest the x-dependent modification of the effective Ruderman-Kittel-Kasuya-Yosida exchange interaction within the",
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author = "E. Altynbaev and S.-A. Siegfried and E. Moskvin and D. Menzel and C. Dewhurst and A. Heinemann and A. Feoktystov and L. Fomicheva and A. Tsvyashchenko and S. Grigoriev",
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Altynbaev, E, Siegfried, S-A, Moskvin, E, Menzel, D, Dewhurst, C, Heinemann, A, Feoktystov, A, Fomicheva, L, Tsvyashchenko, A & Grigoriev, S 2016, 'Hidden quantum phase transition in Mn1-xFexGe evidenced by small-angle neutron scattering', Physical Review B - Condensed Matter and Materials Physics, том. 94, № 17, стр. 174403. https://doi.org/10.1103/physrevb.94.174403

Hidden quantum phase transition in Mn1-xFexGe evidenced by small-angle neutron scattering. / Altynbaev, E.; Siegfried, S.-A.; Moskvin, E.; Menzel, D.; Dewhurst, C.; Heinemann, A.; Feoktystov, A.; Fomicheva, L.; Tsvyashchenko, A.; Grigoriev, S.

В: Physical Review B - Condensed Matter and Materials Physics, Том 94, № 17, 2016, стр. 174403.

Результат исследований: Научные публикации в периодических изданияхстатья

TY - JOUR

T1 - Hidden quantum phase transition in Mn1-xFexGe evidenced by small-angle neutron scattering

AU - Altynbaev, E.

AU - Siegfried, S.-A.

AU - Moskvin, E.

AU - Menzel, D.

AU - Dewhurst, C.

AU - Heinemann, A.

AU - Feoktystov, A.

AU - Fomicheva, L.

AU - Tsvyashchenko, A.

AU - Grigoriev, S.

PY - 2016

Y1 - 2016

N2 - The magnetic system of the Mn1−xFexGe solid solution is ordered in a spiral spin structure in the whole concentration range of x∈[0÷1]. The close inspection of the small-angle neutron-scattering data reveals the quantum phase transition from the long-range ordered to short-range ordered helical structure upon increase of Fe concentration at x∈[0.25÷0.4]. The short-range order (SRO) of the helical structure is identified as a Lorentzian contribution, while long-range order is associated with the Gaussian contribution into the scattering profile function. The scenario of the quantum phase transition with x as a driving parameter is similar to the thermal phase transition in pure MnGe. The quantum nature of the SRO is proved by the temperature-independent correlation length of the helical structure at low- and intermediate-temperature ranges with remarkable decrease above certain temperature TQ. We suggest the x-dependent modification of the effective Ruderman-Kittel-Kasuya-Yosida exchange interaction within the

AB - The magnetic system of the Mn1−xFexGe solid solution is ordered in a spiral spin structure in the whole concentration range of x∈[0÷1]. The close inspection of the small-angle neutron-scattering data reveals the quantum phase transition from the long-range ordered to short-range ordered helical structure upon increase of Fe concentration at x∈[0.25÷0.4]. The short-range order (SRO) of the helical structure is identified as a Lorentzian contribution, while long-range order is associated with the Gaussian contribution into the scattering profile function. The scenario of the quantum phase transition with x as a driving parameter is similar to the thermal phase transition in pure MnGe. The quantum nature of the SRO is proved by the temperature-independent correlation length of the helical structure at low- and intermediate-temperature ranges with remarkable decrease above certain temperature TQ. We suggest the x-dependent modification of the effective Ruderman-Kittel-Kasuya-Yosida exchange interaction within the

KW - Helical magnetic structure

KW - MnGe

KW - Manganese Germanium

KW - Quantum phase transition

KW - Magnetic ordering

KW - Fluctuations

U2 - 10.1103/physrevb.94.174403

DO - 10.1103/physrevb.94.174403

M3 - статья

VL - 94

SP - 174403

JO - Physical Review B-Condensed Matter

JF - Physical Review B-Condensed Matter

SN - 1098-0121

IS - 17

ER -