Zobrazeno 1 - 10
of 135
pro vyhledávání: '"Shunji Sugai"'
Publikováno v:
Journal of Superconductivity and Novel Magnetism. 25:1393-1397
The superconducting transition temperature in the cuprate is pointed to be enhanced by the self-organized spin-charge separated stripes. The magnetic excitations are very different in k∥ and k⊥ stripes. Therefore if one detects the different exci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3d6821e781f7fe78cab095e54d64e671
https://doi.org/10.1007/s10948-012-1528-y
https://doi.org/10.1007/s10948-012-1528-y
Autor:
Masamichi Nakajima, Akira Iyo, Chul-Ho Lee, Y. Mizuno, Hiroshi Eisaki, K. Kiho, Takahiko Kawaguchi, Shunji Sugai, R. Watanabe, Hiroshi Ikuta, S. Uchida, Koshi Takenaka
Publikováno v:
Journal of Superconductivity and Novel Magnetism. 24:1185-1189
The spin density wave (SDW) transition in BaFe2As2 and the superconducting transition in BaFe1.84Co0.16As2 were investigated by Raman scattering. The symmetries of the nodal SDW gap at 400 cm−1 and the superconducting gap at 75 cm−1 are both B 2g
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::841dde90dff25a279e3e7b1238eeeb3f
https://doi.org/10.1007/s10948-010-1106-0
https://doi.org/10.1007/s10948-010-1106-0
Publikováno v:
Journal of Superconductivity and Novel Magnetism. 24:421-425
The femtosecond timescale photoinduced reflectivity response in La1.9Sr0.1CuO4 under intense laser photoexcitation is reported as a function of intensity and temperature. We observe saturation of the response, which corresponds to the destruction of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f528209360d93b41b5773f660473a1d1
https://doi.org/10.1007/s10948-010-0951-1
https://doi.org/10.1007/s10948-010-0951-1
Publikováno v:
Journal of Superconductivity and Novel Magnetism. 22:313-317
The superconductivity depression mechanisms at x≈1/8 in La2−xBaxCuO4 and Zn substitution in La2−xSrxCuO4 were investigated by Raman scattering. About 80% of low-energy electronic states are two-dimensional at x≈1/8 and form the Fermi arc arou
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::44835f98297cfdb041b4cabacb67035d
https://doi.org/10.1007/s10948-008-0421-1
https://doi.org/10.1007/s10948-008-0421-1
Autor:
T. Asaka, K. Yoshidome, K. Yoshii, Y. Matsui, X. Xu, Y. Nagamine, Shunji Sugai, Koshi Takenaka, Shigeo Mori
Publikováno v:
Transactions of the Materials Research Society of Japan. 34:55-58
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::20b33b5e506077dbe9be15c289ff97f3
https://doi.org/10.14723/tmrsj.34.55
https://doi.org/10.14723/tmrsj.34.55
Publikováno v:
Journal of Physics and Chemistry of Solids. 69:3058-3063
Anisotropy of high-energy spin excitations and low-energy conductive electronic excitations in Raman spectra can be interpreted, if quantum spin fluctuation is weak. The low-energy states at (π/2, π/2) in the underdoped phase are composed of insula
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90193617352eb88c4a82444b7e0dd473
https://doi.org/10.1016/j.jpcs.2008.06.020
https://doi.org/10.1016/j.jpcs.2008.06.020
Publikováno v:
Journal of Physics and Chemistry of Solids. 69:3078-3081
We have investigated electron–boson coupling in the optical conductivity of high- T c superconductors through the optical self-energy. The real part of the self-energy (Re Σ op ( ω )) of YBa 2 Cu 3 O y (YBCO) shows a characteristic doping depende
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b7b3288c23da601671874c545c378bc
https://doi.org/10.1016/j.jpcs.2008.06.023
https://doi.org/10.1016/j.jpcs.2008.06.023
Publikováno v:
Journal of Luminescence. :378-382
Under the high-density photoexcitation by ultrashort laser pulses, strong coupling between photogenerated carriers and phonons as well as anharmonic phonon–phonon coupling may cause structural phase transition in ferroelectric materials. In the pre
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73839776c3db76cd0bc706a525e523e0
https://doi.org/10.1016/j.jlumin.2006.01.020
https://doi.org/10.1016/j.jlumin.2006.01.020
Autor:
N. Hayamizu, Y. Takayanagi, T. Muroi, T. Hosokawa, Koshi Takenaka, Y. Sone, Shunji Sugai, Haruyuki Suzuki, H. Mabuchi, J. Nohara, R. Shiozaki
Publikováno v:
Journal of Superconductivity. 18:779-783
The phonon modes with strong electron–phonon interactions were investigated by two-phonon Raman scattering in p- and n-type high T c superconductors. In p-type superconductors, the strong electron–phonon interaction mode changes from the breathin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::869ffaa03689ca65224a8d049cc87451
https://doi.org/10.1007/s10948-005-0080-4
https://doi.org/10.1007/s10948-005-0080-4
Publikováno v:
Chemical Physics Letters. 411:133-137
We have measured the temperature dependence of reflectivity spectra of a single crystal of (C 2 H 5 ) 2 (CH 3 ) 2 Sb[Pd(dmit) 2 ] 2 (dmit = 1,3-dithiol-2-thione-4,5-dithiolate), to elucidate the origin of its phase transition at 70 K. A remarkable sp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9637104c949788549c4c71666ad35963
https://doi.org/10.1016/j.cplett.2005.06.026
https://doi.org/10.1016/j.cplett.2005.06.026