Okazaki, R., Kasahara, Y., Shishido, H., Konczykowski, M., Behnia, K., Haga, Y., ...
We find that in ultraclean heavy-fermion superconductor URu$_2$Si$_2$ ($T_{c0}=1.45$ K) a distinct flux line lattice melting transition with outstanding characters occurs well below the mean-field...
Superconducting properties of Pr-based Filled skutterudite PrRu$_4$As$_{12}$ (2007)
Namiki, T., Aoki, Y., Sato, H., Sekine, C., Shirotani, I., Matsuda, T. D., ...
We report on systematic study of superconducting characteristics and Pr crystalline-electric-field (CEF) levels of filled-skutterudite \pra ($T_{\rm c}$ = 2.33 K). The temperature dependences of the...
Kasahara, Y., Iwasawa, T., Shishido, H., Shibauchi, T., Behnia, K., Haga, Y., ...
We show that the charge and thermal transport measurements on ultraclean crystals of URu2Si2 reveal a number of unprecedented superconducting properties. The uniqueness is best highlighted by the...
Collapse of antiferromagnetism in CeRh2Si2 : volume versus entropy (2007)
Villaume, A., Aoki, D., Haga, Y., Knebel, G., Boursier, R., Flouquet, J.
The thermal expansion of the heavy fermion compound CeRh2Si2 has been measured under pressure as a function of temperature using strain gages. A large anomaly associated to the Neel temperature has...
Harada, A., Kawasaki, S., Mukuda, H., Kitaoka, Y., Haga, Y., Yamamoto, E., ...
We report that a novel type of superconducting order parameter has been realized in the ferromagnetic states in UGe$_2$ via $^{73}$Ge nuclear-quadrupole-resonance (NQR) experiments performed under...
Magnetic state dynamics in itinerant paramagnet UM3B2 (M= Co, Ir) probed by 11B NMR (2006)
Fujimoto, T., Sakai, H., Tokunaga, Y., Kambe, S., Walstedt, R. E., Ikeda, S., ...
We have carried out the $^{11}$B NMR measurement on the itinerant paramagnetic systems U$M_{3}$B$_{2}$ ($M =$ Co, Ir) to investigate the low-dimensional characteristics of the $5f$-electrons due to...
Sakai, H., Tokunaga, Y., Fujimoto, T., Kambe, S., Walstedt, R. E., Yasuoka, H., ...
^{69,71}Ga NMR/NQR studies have been performed on a single crystal of the transuranium superconductor PuRhGa_{5} with Tc ~ 9 K. We have observed a ^{69}Ga NQR line at ~29.15 MHz, and assigned it to...
Magnetic properties of UTGa5 (T: transition metal) (2005)
Ikeda,S., Tokiwa,Y., Matsuda,T. D., Galatanu,A., Yamamoto,E., Nakamura,A., ...
Watanabe,T., Izawa,K., Kasahara,Y., Haga,Y., Onuki,Y., Thalmeier,P., ...
Magnetic properties of UTGa5 (T: transition metal) (2005)
Ikeda, S., Tokiwa, Y., Matsuda, T. D., Galatanu, A., Yamamoto, E., Nakamura, A., ...
Thermal transport in the hidden-order state of URu$_{2}$Si$_{2}$ (2004)
Behnia, K., Bel, R., Kasahara, Y., Nakajima, Y., Jin, H., Aubin, H., ...
We present a study of thermal conductivity in the normal state of the heavy-fermion superconductor URu$_{2}$Si$_{2}$. Ordering at 18K leads to a steep increase in thermal conductivity and (in...
Kotegawa, H., Harada, A., Kawasaki, S., Kawasaki, Y., Kitaoka, Y., Haga, Y., ...
We report on the itinerant ferromagnetic superconductor UGe_2 through ^73Ge-NQR measurements under pressure (P). The P dependence of the NQR spectrum signals a first-order transition from the...
Hiess, A., Bernhoeft, N., Metoki, N., Lander, G. H., Roessli, B., Sato, N. K., ...
This paper, I, presents new results from neutron inelastic scattering experiments on single crystals of UPd2Al3. The focus is on the experimental position whilst the sequel, II, advances theoretical...
Watanabe,T., Izawa,K., Kasahara,Y., Haga,Y., Onuki,Y., Thalmeier,P., ...
Yogi, M., Kitaoka, Y., Hashimoto, S., Yasuda, T., Settai, R., Matsuda, T. D., ...
We report on novel antiferromagnetic (AFM) and superconducting (SC) properties of noncentrosymmetric CePt3Si through measurements of the 195Pt nuclear spin-lattice relaxation rate 1/T_1. In the...
Watanabe, T., Izawa, K., Kasahara, Y., Haga, Y., Onuki, Y., Thalmeier, P., ...
The superconducting gap structure of heavy fermion UPd_2Al_3, in which unconventional superconductivity coexists with antiferromagnetic (AF) order with atomic size local moments, was investigated by...
Heat-capacity anomalies at $T_{sc}$ and $T^{*}$ in the ferromagnetic superconductor UGe$_2$ (2004)
Tateiwa, N., Kobayashi, T. C., Amaya, K., Haga, Y., Settai, R., Ōnuki, Y.
The heat-capacity and magnetization measurements under high pressure have been carried out in a ferromagnetic superconductor UGe$_2$. Both measurements were done using a same pressure cell in order...
Pressure-induced magnetic phase transition in gold-phase SmS (2004)
Haga, Y., Derr, J., Barla, A., Salce, B., Lapertot, G., Sheikin, I., ...
Kawasaki, Y., Kawasaki, S., Yashima, M., Mito, T., Kitaoka, Y., ...
We report In-NQR and Co-NMR experiments of CeCoIn$_5$ that undergoes a superconducting transition with a record high $T_{\rm c}$ = 2.3 K to date among heavy-fermion superconductors. At zero magnetic...
Phase diagram of heavy fermion systems (2003)
Flouquet, J., Haga, Y., Haen, P., Braithwaite, D., Knebel, G., Raymond, S., ...
The Meccano of heavy fermion systems is shown on different cases going from anomalous monochalcogenides to cerium intermetallic compounds with special focus on the ideal case of the CeRu2Si2 series....
Kawasaki, S., Mito, T., Kawasaki, Y., Kitaoka, Y., Aoki, D., ...
We report systematic measurements of ac-susceptibility, nuclear-quadrupole-resonance spectrum, and nuclear-spin-lattice-relaxation time ($T_1$) on the pressure ($P$)- induced heavy-fermion (HF)...
Mito, T., Kawasaki, S., Kawasaki, Y., Kitaoka, Y., Aoki, D., ...
We report a study on the interplay between antiferromagnetism (AFM) and superconductivity (SC) in a heavy-fermion compound CeRhIn$_5$ under pressure $P=1.75$ GPa. The onset of the magnetic order is...
Coexistence of antiferromagnetism and superconductivity in heavy-fermion systems (2002)
Kitaoka,Y., Kawasaki,Y., Mito,T., Kawasaki,S., Zheng,G. Q., Ishida,K., ...
We report the novel pressure (P)-temperature (T) phase diagrams of antiferromagnetism (AFM) and superconductivity (SC) in CeRhIn5, CeIn3, and CeCu2Si2 revealed by the nuclear quadrupole resonance...
Coexistence of antiferromagnetism and superconductivity in heavy-fermions systems (2002)
Kitaoka, Y., Kawasaki, Y., Mito, T., Kawasaki, S., Ishida, K., ...
We report the novel pressure(P)-temperature(T) phase diagrams of antiferromagnetism (AF) and superconductivity (SC) in CeRhIn$_5$, CeIn$_3$ and CeCu$_2$Si$_2$ revealed by the NQR measurement. In the...
Coexistence of antiferromagnetism and superconductivity in heavy-fermion systems (2002)
Kitaoka, Y., Kawasaki, Y., Mito, T., Kawasaki, S., Zheng, G. Q., Ishida, K., ...
We report the novel pressure (P)-temperature (T) phase diagrams of antiferromagnetism (AFM) and superconductivity (SC) in CeRhIn5, CeIn3, and CeCu2Si2 revealed by the nuclear quadrupole resonance...
Kawasaki, S., Mito, T., Thessieu, C., Kawasaki, Y., Ishida, K., ...
We report the novel pressure($P$) - temperature($T$) phase diagram of antiferromagnetism and superconductivity in CeRhIn$_5$ and CeIn$_3$ revealed by the $^{115}$In nuclear-spin-lattice-relaxation...
Kobayashi, T. C., Hanazono, K., Tateiwa, N., Amaya, K., Haga, Y., Settai, R., ...
The electrical resistivity measurements in the magnetic field are carried out on the pressure-induced superconductor UGe$_2$. The superconductivity is observed from 1.06 to 1.44 GPa. The upper...
Heat Capacity of the Pressure-induced Superconductivity in Itinerant Ferromagnet UGe$_2$ (2001)
Tateiwa, N., Kobayashi, T. C., Amaya, K., Haga, Y., Settai, R., Onuki, Y.
Recently co-existence of the ferromagnetism and superconductivity was reported in the high-pressure region (1.0-1.6 GPa) in UGe$_2$. We performed the heat capacity measurement on UGe$_2$ under high...
Superconducting gap and pair breaking in CeRu2 studied by point contacts (2001)
Moskalenko, A. V., Naidyuk, Yu. G., Yanson, I. K., Hedo, M., Inada, Y., Onuki, Y., ...
The superconducting gap in a CeRu$_{2}$ single crystal is investigated by point contacts. BCS-like behavior of the gap $\Delta $ in the temperature range below T$_{c}^{*}
Magnetic Properties of a Pressure-induced Superconductor UGe$_2$ (2001)
Tateiwa, N., Hanazono, K., Kobayashi, T. C., Amaya, K., Inoue, T., Kindo, K., ...
We performed the DC-magnetization and neutron scattering experiments under pressure {\it P} for a pressure-induced superconductor UGe$_2$. We found that the magnetic moment is enhanced at a...
Superconductivity in a pyrochlore oxide Cd2Re2O7 (2001)
Sakai, H., Yoshimura, K., Ohno, H., Kato, H., Kambe, S., Walstedt, R. E., ...
We make the first report that a metallic pyrochlore oxide \Cd2Re2O7, exhibits type II superconductivity at 1.1 K. The pyrochlore oxide is known to be a geometrical frustrated system, which includes...
Mito, T., Kawasaki, S., Kawasaki, Y., Ishida, K., Kitaoka, Y., ...
We report $^{115}$In nuclear-quadrupole-resonance (NQR) measurements of the pressure($P$)-induced superconductor CeRhIn$_5$ in the antiferromagnetic (AF) and superconducting (SC) states. In the AF...
Tanabe, K., Mito, T., Kawasaki, S., Kitaoka, Y., Aoki, D., ...
We report measurements of the ^{115}In nuclear spin-lattice relaxation rate (1/T_1) between T=0.09 K and 100 K in the new heavy fermion (HF) compound CeIrIn_5. At 0.4 K < T < 100 K, 1/T_1 is strongly...
Tulapurkar, A. A., Heidarian, D., Sarkar, S., Ramakrishnan, S., Grover, A. K., Yamamoto, E., ...
We present magnetization data on a weakly pinned CeRu_2 single crystal showing the existence of a stable state of the vortex lattice in the peak effect region. The stable state is achieved by cycling...
Haga, Y, Funakoshi, O, Kuroe, K, Kanazawa, K, Nakajima, H, Saito, H, ...
The aetiology of Crohn's disease remains unknown, although evidence for a viral cause has long been sought. Recent studies have shown inflammation of the submucosal microvascular endothelium and...
Sakamoto, K, Haga, Y, Yoshimura, R, Egami, H, Yokoyama, Y, Akagi, M
Serum concentrations of CA 19-9, CA 125 and carcinoembryonic antigen (CEA) in 145 patients with gastrointestinal carcinomas and 89 with non-neoplastic diseases were determined to compare the clinical...