Electrically driven spin excitation at THz frequencies in bc and ab spiral spin phases of perovskite manganites

被引：2

作者：

Kida, N. ^{[1
]}

Yamasaki, Y. ^{[2
]}

He, J. P. ^{[1
]}

Kaneko, Y. ^{[1
]}

Ikebe, Y. ^{[3
]}

Takahashi, Y. ^{[1
]}

Shimano, R. ^{[1
,3
]}

Arima, T. ^{[4
]}

Nagaosa, N. ^{[2
,5
]}

Tokura, Y. ^{[1
,2
,5
]}

机构：

[1] Univ Tokyo, Multiferro Project, Japan Sci & Technol Agcy, Dept Appl Phys,ERATO,Bunkyo Ku, 7-3-1 Hongo, Tokyo 1138656, Japan

[2] Univ Tokyo, Dept Appl Phys, Tokyo 1138656, Japan

[3] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[4] Tohoku Univ, Inst Multidisciplin Res Adv Mat, Sendai, Miyagi 9808577, Japan

[5] RIKEN, ASI, Cross Correlated Mat Res Gro CMRG, Wako, Saitama 3510198, Japan

来源：

LXIII YAMADA CONFERENCE ON PHOTO-INDUCED PHASE TRANSITION AND COOPERATIVE PHENOMENA (PIPT3) | 2009年 / 148卷

关键词：

D O I：

10.1088/1742-6596/148/1/012038

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Here we overview the low-energy (1-10 meV) electrodynamics of spin excitations in a family of ferroelectric perovskite manganites, DyMnO3 and Gd0.7Tb0.3MnO3. By using THz time-domain spectroscopy, we show the compelling evidence that the electric-dipole active spin excitation around 2 meV emerges only along the a-axis, irrespective of the direction of the spiral spin plane (bc or ab). We sum up the general features of the spin excitations, as observed at THz frequencies in ferroelectric perovskite manganites, by taking DyMnO3 and Gd0.7Tb0.3MnO3 as typical examples.

引用

页数：4

共 4 条

[1] Lattice dynamics in the ab- and bc-spiral spin-ordered states of perovskite manganites
Lee, J. S.
Kida, N.
Yamasaki, Y.
Shimano, R.
Tokura, Y.
PHYSICAL REVIEW B, 2009, 80 (13):
[2] Charge-ordered, spin-spiral state in perovskite manganites
Inoue, J
Ohsawa, T
Kurauchi, N
PHYSICA B, 2000, 284 : 1436 - 1437
[3] Electrically driven spin excitation in the ferroelectric magnet DyMnO3
Kida, N.
Ikebe, Y.
Takahashi, Y.
He, J. P.
Kaneko, Y.
Yamasaki, Y.
Shimano, R.
Arima, T.
Nagaosa, N.
Tokura, Y.
PHYSICAL REVIEW B, 2008, 78 (10)
[4] Electric-Dipole Active Two-Magnon Excitation in ab Spiral Spin Phase of a Ferroelectric Magnet Gd0.7Tb0.3MnO3
Kida, Noriaki
Yamasaki, Yuichi
Shimano, Ryo
Arima, Taka-hisa
Tokura, Yoshinori
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 2008, 77 (12)

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