K. Iwamoto

activity

20092013

most citedAnomalous infrared spectra of hybridized phonons in type-I clathrate Ba

_{8}

_{16}

_{30}

8 citations · 8 across the 3 of their papers we have counts for

collaborators

5 papers

cond-mat.mtrl-sci2013

Optical conductivity spectra of the rattling phonons and charge carriers in type-VIII clathrate Ba $_{8}$ Ga $_{16}$ Sn $_{30}$

K. Iwamoto, T. Mori, S. Kajitani +6

We have investigated optical conductivity spectra of $n$ - and $p$ -type Ba $_{8}$ Ga $_{16}$ Sn $_{30}$ ( $α$ -BGS) with type-VIII clathrate structure, at temperatures from 296\,K down to 6…

cond-mat.mtrl-sci2012★ 8 cited

Anomalous infrared spectra of hybridized phonons in type-I clathrate Ba $_{8}$ Ga $_{16}$ Ge $_{30}$

K. Iwamoto, S. Kushibiki, H. Honda +7

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…

cond-mat.mtrl-sci2010

Low temperature line-width broadening in optical-conductivity spectra of the off-center rattling phonons in type-I clathrate Ba $_{8}$ Ga $_{16}$ Sn $_{30}$

T. Mori, K. Iwamoto, S. Kushibiki +6

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…

cond-mat.mtrl-sci2009

Optical conductivity from local anharmonic phonons

Hideki Matsumoto, Tatsuya Mori, Kei Iwamoto +3

Recently there has been paid much attention to phenomena caused by local anharmonic vibrations of the guest ions encapsulated in polyhedral cages of materials such as pyrochlore ox…

cond-mat.mtrl-sci2009

Optical conductivity of rattling phonons in type-I clathrate Ba $_{8}$ Ga $_{16}$ Ge $_{30}$

T. Mori, S. Goshima, K. Iwamoto +9

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…

Optical conductivity spectra of the rattling phonons and charge carriers in type-VIII clathrate Ba8​Ga16​Sn30​

Anomalous infrared spectra of hybridized phonons in type-I clathrate Ba8​Ga16​Ge30​

Low temperature line-width broadening in optical-conductivity spectra of the off-center rattling phonons in type-I clathrate Ba8​Ga16​Sn30​

Optical conductivity from local anharmonic phonons

Optical conductivity of rattling phonons in type-I clathrate Ba8​Ga16​Ge30​

Optical conductivity spectra of the rattling phonons and charge carriers in type-VIII clathrate Ba $_{8}$ Ga $_{16}$ Sn $_{30}$

Anomalous infrared spectra of hybridized phonons in type-I clathrate Ba $_{8}$ Ga $_{16}$ Ge $_{30}$

Low temperature line-width broadening in optical-conductivity spectra of the off-center rattling phonons in type-I clathrate Ba $_{8}$ Ga $_{16}$ Sn $_{30}$

Optical conductivity of rattling phonons in type-I clathrate Ba $_{8}$ Ga $_{16}$ Ge $_{30}$