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Noriaki Kida / Associate Professor / Division of Transdisciplinary Sciences
Department of Materials Science / / Terahertz optics in strongly correlated electron systems
http://pete.k.u-tokyo.ac.jp/

Career Summary
2002: Eng.D. (Osaka University)
2002: PostDoc Researcher (Research Center for Superconductor Photonics, Osaka University)
2003-2007: Researcher (ERATO Tokura Spin Superstructure Project, JST)
2007-2010: Researcher (ERATO Tokura Multiferroics Project, JST)
2010: Associate Professor (University of Tokyo)
Educational Activities
Graduate school: Electrodynamics
Research Activities
My long-term research interest is to investigate the optical properties of solids, ranging from terahertz to violet frequencies.
Literature
1) "Gigantic terahertz magnetochromism via electromagnons in the hexaferrite magnet Ba2Mg2Fe12O22"
N. Kida et al., Physical Review B (2011) in press.
2) "Enhanced directional dichroism of terahertz light in resonance with magnetic excitations of the multiferroic Ba2CoGe2O7 oxide compound"
I. Kezsmarki, N. Kida et al., Physical Review Letters 106, 057403-1-4 (2011).
3) "Optical investigation on collective dynamics of charge-orbital density wave in layered manganites"
J. Fujioka, N. Kida et al., Physical Review B 82, 140409(R)-1-4 (2010).
Selected at Editorfs Suggestion
4) "Electromagnons in the spin collinear state of a triangular lattice antiferromagnet"
S. Seki, N. Kida et al., Physical Review Letters 105, 097207-1-4 (2010).
5) "Charge-ordering-induced polar domains and domain walls in a bilayered manganite Pr(Sr0.15Ca0.85)2Mn2O7"
H. Itoh, Y. Tokunaga, N. Kida et al., Applied Physics Letters 96, 032902-1-3 (2010).
6) "Electric-dipole-active magnetic resonance in the conical-spin magnet Ba2Mg2Fe12O22"
N. Kida et al., Physical Review B 80, 220406(R)-1-4 (2009).
7) "Lattice dynamics in the ab- and bc-spiral spin-ordered states of perovskite manganites"
J. S. Lee, N. Kida et al., Physical Review B 80, 134409-1-6 (2009).
8) "Electrically driven spin excitation at THz frequencies in bc and ab spiral spin phases of perovskite manganites"
N. Kida et al., Journal of Physics Conference Series 148, 012038-1-4 (2009).
9) "Anisotropic polarization pi-molecular skeleton coupled dynamics in proton-displacive organic ferroelectrics"
J. Fujioka, S. Horiuchi, N. Kida et al., Physical Review B 80, 125134-1-8 (2009).
10) "Terahertz time-domain spectroscopy of electromagnons in multiferroic perovskite manganites [Invited]"
N. Kida et al., Journal of the Optical Society of America B 26, A35-A51 (2009).
11) "Far-infrared optical study of electromagnons and their coupling to optical phonons in Eu1-xYxMnO3 (x=0.1, 0.2, 0.3, 0.4, and 0.45)"
Y. Takahashi, Y. Yamasaki, N. Kida et al., Physical Review B 79, 214431-1-8 (2009).
Selected at Editorfs Suggestion
12) "Systematics of electromagnons in the spiral spin-ordered states of RMnO3"
J. S. Lee, N. Kida et al., Physical Review B 79, 180403(R)-1-4 (2009).
13) "Electric-dipole active two-magnon excitation in ab spiral spin phase of a ferroelectric magnet Gd0.7Tb0.3MnO3"
N. Kida et al., Journal of the Physical Society of Japan 77, 123704-1-4 (2008).
14) "Evidence for an electric-dipole active continuum band of spin excitations in multiferroic TbMnO3"
Y. Takahashi, N. Kida et al.,Physical Review Letters 101, 187201-1-4 (2008).
15) "Electrically driven spin excitation in the ferroelectric magnet DyMnO3"
N. Kida et al., Physical Review B 78, 104414-1-9 (2008).
Selected at Editorfs Suggestion,
Highlighted in Synopsis Section of Physics.
16) "Optical magnetoelectric effect at CaRuO3-CaMnO3 interfaces as a polar ferromagnet"
H. Yamada, H. Sato, H. Akoh, N. Kida et al., Applied Physics Letters 92, 062508-1-3 (2008).
17) "Photoinduced phase transition in Pr0.7Ca0.3MnO3 thin films probed via ultrafast switching characteristics of terahertz radiation"
N. Kida et al., Physical Review B 76, 184437-1-7 (2007).
18) "Optical magnetoelectric effect of patterned oxide superlattices with ferromagnetic interfaces"
N. Kida et al., Physical Review Letters 99, 197404-1-4 (2007).
19) "Enhanced optical magnetoelectric effect in a patterned polar ferrimagnet"
N. Kida et al., Physical Review Letters 96, 167202-1-4 (2006).
20) "Terahertz radiation by an ultrafast spontaneous polarization modulation of multiferroic BiFeO3 thin films"
K. Takahashi, N. Kida et al., Physical Review Letters 96, 117402-1-4 (2006).
21) "Terahertz radiation from magnetoresistive Pr0.7Ca0.3MnO3 thin films under strong electric fields"
N. Kida et al., Journal of the Optical Society of America B 23, 179-182 (2006).
22) "Optical magnetoelectric effect in a submicron patterned magnet"
N. Kida et al., Physical Review Letters 94, 077205-1-4 (2005).
23) "Control of the ferroelectric properties of DyMn2O5 by magnetic fields"
D. Higashiyama, S. Miyasaka, N. Kida et al., Physical Review B 70, 174405-1-7 (2004).
24) "Effect of charge ordering and disordering on terahertz radiation characteristics of magnetoresistive Pr0.7Ca0.3MnO3 thin films"
N. Kida et al., Optics Letters 29, 2554-2556 (2004).
25) "Observation of a pseudogap at terahertz frequencies in the ferromagnetic metallic phase of La2-2xSr1+2xMn2O7 (x=0.3)"
K. Takahashi, N. Kida et al., Applied Physics Letters 83, 4303-4305 (2003).
26) "Reversible and bistable terahertz radiation from magnetoresistive Pr0.7Ca0.3MnO3 thin films"
N. Kida et al., Applied Physics Letters 82, 3412-3414 (2003).
27) "Partial and macroscopic phase coherences in an underdoped Bi2Sr2CaCu2O8+delta thin film"
H. Murakami, T. Kiwa, N. Kida et al., Europhysics Letters 60, 288-294 (2002).
28) "Spectroscopic evidence for a charge-density-wave condensate in a charge-ordered manganite: Observation of a collective excitation mode in Pr0.7Ca0.3MnO3 by using THz time-domain spectroscopy"
N. Kida et al., Physical Review B 66, 024401 (2002).
29) "Terahertz radiation from magnetoresistive Pr0.7Ca0.3MnO3 thin films"
N. Kida et al., Applied Physics Letters 78, 4115-4117 (2001).
30) "Low-energy charge dynamics in La0.7Ca0.3MnO3: THz time-domain spectroscopic studies"
N. Kida et al., Physical Review B 62, R11965-R11968 (2000).

Other Activities
Member of The Physical Society of Japan, The Japan Society of Applied Physics, and American Physical Society.
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Future Plan
Our laboratory is now working on terahertz optics in strongly correlated electron systems.
Messages to Students
I hope you will discover a new optical functionality while in our group.
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