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of 231
pro vyhledávání: '"Suekuni K"'
Autor:
Iwamoto, K., Mori, T., Kajitani, S., Matsumoto, H., Toyota, N., Suekuni, K., Avila, M. A., Saiga, Y., Takabatake, T.
We have investigated optical conductivity spectra of $n$- and $p$-type Ba$_8$Ga $_{16}$Sn$_{30}$ ($\alpha$-BGS) with type-VIII clathrate structure, at temperatures from 296\,K down to 6\,K with a terahertz time-domain spectrometer (0.2\,-\,2.5\,THz).
Externí odkaz:
http://arxiv.org/abs/1309.4524
Autor:
Iwamoto, K., Kushibiki, S., Honda, H., Kajitani, S., Mori, T., Matsumoto, H., Toyota, N., Suekuni, K., Avila, M. A., Takabatake, T.
The optical conductivity spectra of the rattling phonons in the clathrate Ba$_8$Ga$_{16}$Ge$_{30}$ are investigated in detail by use of the terahertz time-domain spectroscopy. The experiment has revealed that the lowest-lying vibrational mode of a Ba
Externí odkaz:
http://arxiv.org/abs/1206.0073
Autor:
Mori, T., Iwamoto, K., Kushibiki, S., Honda, H., Matsumoto, H., Toyota, N., Suekuni, K., Avila, M. A., Takabatake, T.
With a terahertz time-domain spectrometer (0.3 - 3.0 THz) we have measured the optical conductivity of the type-I clathrate Ba$_8$Ga$_{16}$Sn$_{30}$ at temperatures from 300 K down to 7 K. Independent six spectra superimposed on the Drude conductivit
Externí odkaz:
http://arxiv.org/abs/1007.4229
Autor:
Mori, T., Goshima, S., Iwamoto, K., Kushibiki, S., Matsumoto, H., Toyota, N., Suekuni, K., Avila, M. A., Takabatake, T., Hasegawa, T., Ogita, N., Udagawa, M.
A series of infrared-active optical phonons have been detected in type-I clathrate Ba$_8$Ga$_{16}$Ge$_{30}$ by terahertz time-domain spectroscopy. The conductivity spectra with the lowest-lying peaks at 1.15 and 1.80 THz are identified with so-called
Externí odkaz:
http://arxiv.org/abs/0905.3610
We present a systematic study of thermal conductivity, specific heat, electrical resistivity, thermopower and x-ray diffraction measurements performed on single-crystalline samples of the pseudoquaternary type-I clathrate system Sr8Ga16Si30-xGex, in
Externí odkaz:
http://arxiv.org/abs/cond-mat/0612626
Publikováno v:
Phys. Rev. B 74, 125109 (2006)
The present controversy over the origin of glasslike thermal conductivity observed in certain crystalline materials is addressed by studies on single-crystal x-ray diffraction, thermal conductivity k(T) and specific heat Cp(T) of carrier-tuned Ba8Ga1
Externí odkaz:
http://arxiv.org/abs/cond-mat/0606539
Publikováno v:
J. Phys. Condens. Matter 18 (2006) 1585-1592.
We have grown single crystals of the type-VIII intermetallic clathrate Ba8Ga16Sn30 from both Sn and Ga flux, evaluated their compositions through electron microprobe analysis and studied their transport properties through measurements on temperature
Externí odkaz:
http://arxiv.org/abs/cond-mat/0505095
Publikováno v:
In Journal of Crystal Growth 15 September 2014 402:312-318
Publikováno v:
In Current Applied Physics August 2014 14(8):1041-1044
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