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91.
Precise temperature and polarization dependences of Raman spectra have been investigated for fully oxygenated twin-free YBa2Cu3O7 single crystals. We have found a striking superconductivity-induced x−y anisotropy in the temperature behavior of the 340 cm−1 line: the magnitudes of the softening and broadening are quite different in the xx-and yy-polarizations. This anisotropy suggests a contribution of the CuO-chain superconductivity with a pairing symmetry different
from that for the CuO2 plane, or indicates that the superconducting gap amplitudes are different in the k
x and k
y directions. The d+s gap symmetry is the only realistic symmetry in the case of Δx≠Δy.
Fiz. Tverd. Tela (St. Petersburg) 40, 403–412 (March 1998)
Published in English in the original Russian journal. Reproduced here with stylistic changes by the Translation Editor. 相似文献
92.
Optical and Quantum Electronics - 相似文献
93.
94.
S. Tajima 《Ukrainian Mathematical Journal》1998,50(12):1908-1916
95.
H. Iwasawa J.F. Douglas K. Sato T. Masui Y. Yoshida Z. Sun H. Eisaki H. Bando A. Ino M. Arita K. Shimada H. Namatame M. Taniguchi S. Tajima S. Uchida T. Saitoh D.S. Dessau Y. Aiura 《Physica C: Superconductivity and its Applications》2010
Using angle-resolved photoemission spectroscopy (ARPES) with low-energy tunable photons, we studied the oxygen isotope effect in optimally doped Bi2Sr2CaCu2O8+δ (Bi2212). We found the oxygen isotope shift in the real part of the electron self-energies [ReΣ(ω)s] along the nodal direction derived not only from the momentum distribution curves (MDCs) but also from the energy distribution curves (EDCs). Present results indicate straightforwardly the coupling between the nodal electrons and the phonons. 相似文献
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98.
Keisuke Tajima Gen Ogawa Takuzo Aida 《Journal of polymer science. Part A, Polymer chemistry》2000,38(Z1):4821-4825
A novel molecularly hybridized polyethylene/silica composite thin film was obtained by the gas‐phase polymerization of ethylene with a titanocene‐mounted mesoporous silica layer on a mica plate with mesoscopic pores arranged on the film surface. However, the use of titanocene‐mounted hexagonal domains of mesoporous silica on a glass plate for the gas‐phase polymerization of ethylene resulted in the formation of an islanded polyethylene/silica hybridized material. © 2000 John Wiley & Sons, Inc. J Polym Sci A: Polym Chem 38: 4821–4825, 2000 相似文献
99.
100.
Over 30 associated laboratories across 13 countries are part of the international program known as IZEST (International center for Zetta-Exawatt Science and Technology), which has been initiated and coordinated by the École Polytechique and the CEA. Together, this collaboration of laboratories are exploring new ways to push laser peak power and intensities beyond the present horizon with the aim to perform Laser-Based High Energy Physics. 相似文献