Effects of magnon-magnon interactions in a noncollinear magnet induced by combination of a symmetric and an antisymmetric exchange interaction
Effects of magnon-magnon interactions in a noncollinear magnet induced by combination of a symmetric and an antisymmetric exchange interaction
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由对称和反对称交换相互作用组合引起的非共线磁体中磁振子-磁振子相互作用的影响
DOI:
10.1103/physrevb.101.064411
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发表时间:
2020
影响因子:
3.7
通讯作者:
Naoya Arakawa
中科院分区:
文献类型:
--
作者:
Okumura Shun;Ishizuka Hiroaki;Kato Yasuyuki;Ohe Jun-ichiro;Motome Yukitoshi;Naoya Arakawa
We study magnon-magnon interactions and their effects in a spiral magnet induced by combination of an antiferromagnetic Heisenberg interaction and a Dzyaloshinsky-Moriya interaction. We show that the main effect of magnon-magnon interactions on low-energy magnons is to renormalize the coefficient of energy dispersion. This could explain why some experiments are consistent with the noninteracting theory. We also show that although the magnon-magnon interactions induce the pair amplitude for low-energy magnons, its effect on the excitation energy is negligible. This suggests that for magnons the finite pair amplitude does not necessarily accompany the pair condensation.
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DOI:
10.1103/physrevb.54.15163
发表时间:
1996
期刊:
Physical review. B, Condensed matter
影响因子:
--
作者:
Zheludev;Shirane;Sasago;Kiode;Uchinokura
通讯作者:
Uchinokura
影响因子:
1.7
作者:
J. Kanamori;M. Tachiki
通讯作者:
M. Tachiki
影响因子:
3.7
作者:
N. Arakawa
通讯作者:
N. Arakawa
影响因子:
1.7
作者:
S. Miyake
通讯作者:
S. Miyake
影响因子:
3.2
作者:
J. Kanamori;Y. Itoh
通讯作者:
Y. Itoh