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Dive into the research topics where Kazunori Umeo is active.

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Featured researches published by Kazunori Umeo.


Physical Review B | 2006

Glasslike versus crystalline thermal conductivity in carrier-tuned Ba8 Ga16 X30 clathrates (X=Ge,Sn)

Marcos A. Avila; Koichiro Suekuni; Kazunori Umeo; Hiroshi Fukuoka; Shoji Yamanaka; Toshiro Takabatake

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


Applied Physics Letters | 2008

Ba8Ga16Sn30 with type-I clathrate structure: Drastic suppression of heat conduction

Marcos A. Avila; K. Suekuni; Kazunori Umeo; Hiroshi Fukuoka; Shoji Yamanaka; Toshiro Takabatake

\ensuremath{\kappa}(T)


Physical Review B | 2007

Cage-size control of guest vibration and thermal conductivity in Sr 8 Ga 16 Si 30 − x Ge x

K. Suekuni; Marcos A. Avila; Kazunori Umeo; T. Takabatake

, and specific heat


Journal of Physics: Condensed Matter | 1996

Non-Fermi-liquid behaviour at the pressure-induced antiferromagnetic to nonmagnetic transition in a heavy-fermion compound,

Kazunori Umeo; Hideoki Kadomatsu; Toshiro Takabatake

{C}_{p}(T)


Physical Review B | 2010

Structural modification and metamagnetic anomaly in the ordered state of CeOs 2 Al 10

Yuji Muro; Jumpei Kajino; Kazunori Umeo; K. Nishimoto; Ryuji Tamura; Toshiro Takabatake

of carrier-tuned


Physical Review B | 2012

Simultaneous superconducting and antiferroquadrupolar transitions in PrRh2Zn20

Takahiro Onimaru; Naohiro Nagasawa; Keisuke T. Matsumoto; Kazuhei Wakiya; Kazunori Umeo; Shunichiro Kittaka; Toshiro Sakakibara; Yoshitaka Matsushita; T. Takabatake

{\mathrm{Ba}}_{8}{\mathrm{Ga}}_{16}{X}_{30}


Journal of the Physical Society of Japan | 2005

Probing Glasslike Excitations in Single-Crystalline Sr8Ga16Ge30 by Specific Heat and Thermal Conductivity

Kazunori Umeo; Marcos A. Avila; Takeaki Sakata; K. Suekuni; Toshiro Takabatake


Journal of Alloys and Compounds | 2000

Large thermoelectric power in several metallic compounds of cerium and uranium

Y Bando; T. Suemitsu; K Takagi; H Tokushima; Y. Echizen; Kenichi Katoh; Kazunori Umeo; Y Maeda; T. Takabatake

(X=\mathrm{Ge},\mathrm{Sn})


Journal of the Physical Society of Japan | 2004

Successive Magnetic Transitions in a Frustrated Compound YbAgGe

Kazunori Umeo; Kyoutarou Yamane; Yuji Muro; Kenichi Katoh; Y. Niide; Akira Ochiai; Takaaki Morie; Toshiro Sakakibara; Toshiro Takabatake

clathrates. These crystals show radically different low-temperature


Physical Review B | 2012

Ferromagnetic instability in a doped band gap semiconductor FeGa3

Kazunori Umeo; Yuta Hadano; Shota Narazu; Takahiro Onimaru; Marcos A. Avila; Toshiro Takabatake

\ensuremath{\kappa}(T)

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Marcos A. Avila

Universidade Federal do ABC

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