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解説記事
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2011 年以前の主な論文
"Magnetically driven ferroelectric atomic displacements in
orthorhombic YMnO3"
D. Okuyama, S. Ishiwata, Y. Takahashi, K. Yamauchi, S.
Picozzi, K. Sugimoto, H. Sakai, M. Takata, R. Shimano, Y. Taguchi,
T. Arima, and Y. Tokura
Phys. Rev. B 84, 054440 (2011).
"Optical investigation of the collective dynamics of
charge-orbital density waves in layered manganites"
J. Fujioka, Y. Ida, Y. Takahashi, N. Kida, R. Shimano, and
Y. Tokura
Phys. Rev. B 82, 140409 (R) (2010).
"Electromagnons in the multiferroic state of perovskite manganites
with symmetric exchange striction"
Youtarou Takahashi, Shintaro Ishiwata, Shin Miyahara,
Yoshio Kaneko, Nobuo Furukawa, Yasujiro Taguchi, Ryo Shimano, and
Yoshinori Tokura
Phys. Rev. B 81, 100413(R) (2010).
"Splitting dynamics of nuclear wave packets in a Peierls insulator
using femtosecond laser spectroscopy"
Youtarou Takahashi, Keizo Yasukawa, Susumu Kurita, and
Tohru Suemoto
Phys. Rev. B 81, 081102(R) (2010).
"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, Y. Kaneko, T. Arima, R.
Shimano, and Y. Tokura
Phys. Rev. B 79, 214431 (2009). (selected as an editors
suggestion)
"Systematics of electromagnons in the spiral spin-ordered states
of R MnO3"
J. S. Lee, N. Kida, S. Miyahara, Y. Takahashi, Y. Yamasaki,
R. Shimano, N. Furukawa, and Y. Tokura
Phys. Rev. B 79, 180403(R) (2009).
"Terahertz time-domain spectroscopy of electromagnons in
multiferroic perovskite manganites"
N. Kida, Y. Takahashi, J. S. Lee, R. Shimano, Y. Yamasaki,
Y. Kaneko, S. Miyahara, N. Furukawa, T. Arima, and Y. Tokura
J. Opt. Soc. Am. B 26, A35-A51 (2009).
"Propagation of a ballistic nuclear wavepacket on an adiabatic
potential surface of a one-dimensional Br-bridged Pd complex
without a self-trapped exciton state"
Youtarou Takahashi, Hiroshi Kitagawa, and Tohru Suemoto
Phys. Rev. B 79, 153103 (2009).
"Evidence for an electric-dipole active continuum band of spin
excitations in multiferroic TbMnO3"
Y. Takahashi, N. Kida, Y. Yamasaki, J. Fujioka, T. Arima,
R. Shimano, S. Miyahara, M. Mochizuki, N. Furukawa, and Y.
Tokura
Phys. Rev. Lett. 101, 187201 (2008).
"Electrically driven spin excitation in the ferroelectric magnet
DyMnO3"
N. Kida, Y. Ikebe, Y. Takahashi, J. P. He, Y. Kaneko, Y.
Yamasaki, R. Shimano, T. Arima, N. Nagaosa, and Y. Tokura
Phys. Rev. B 78, 1044142 (2008).
"Wavepacket Motion in a Self-trapped Exciton of a
Quasi-one-dimensional Halogen-bridged Pt Complex,
[Pt(en)2][Pt(en)2I2]
(ClO4)4, Observed by Femtosecond
Time-resolved Luminescence Spectroscopy"
Keizo Yasukawa, Youtarou Takahashi and Tohru Suemoto
J. Phys. Soc. Jpn. 77 (2008) 064714.
"Wavepacket dynamics at low temperature in localized excitons of
the quasi-one-dimensional Br-bridged Pt complex studied by
femtosecond luminescence spectroscopy"
Yasukawa K, Takahashi Y, Suemoto T, Kurita S.
J. Phys. Soc. Jpn. 76, 084707 (2007).
"Nuclear wave-packet dynamics on nearly degenerate two adiabatic
potensial energy surfaces in the excited state of KI F center"
Takeshi Koyama, Youtarou Takahashi, Makoto Nakajima, and
Tohru Suemoto
Phys. Rev. B 76 115122 (2007).
"Relaxation processes from charge-transfer excited states of
organic radical 1,3,5-trithia-2,4,6-triazapentalenyl crystals
studied by ultrafast luminescence spectroscopy"
Youtarou Takahashi, Tohru Suemoto, Seiji Oguri, Jun
Takeda
Phys. Rev. B 74, 193104 (2006).
"Lissajous-like wavepacket motion on the two-dimensional adiabatic
potential surface in localized excitons"
K. Yasukawa, Y. Takahashi, S. Kurita and T. Suemoto
Solid State Communications 140 197-201 (2006).
"Persistent nuclear wave packet oscillation coexistent with
incohernt vibrational population at excited F centers in Kl"
Takeshi Koyama, Youtarou Takahashi, Makoto Nakajima, and
Tohru Suemoto
J. Chem. Phys. 124 221104 (2006).
"Selective observation of the wave-packet dynamics in the excited
states at KBr F centers by luminescence experiments"
Takeshi Koyama, Youtarou Takahashi, Makoto Nakajima, and Tohru
Suemoto
Phys. Rev. B 73 161102 1-4 (2006).
"Real-Time Observation on Femtosecond Depolarization of
Room-Temparature Luminescence in KI F Centers"
Takeshi KOYAMA, Youtarou TAKAHASHI, Makoto NAKAJIMA and
Tohru SUEMOTO
J. Phys. Soc. Jpn. 75 045001 1-2 (2006).
"Evidence for an excited state with a large lattice relaxation in
quasi-one-dimensional halogen-bridged Ni complexes"
Y. Takahashi and T. Suemoto
Phys. Rev. B 70 081101(R) (2004).