234 citations · 1.1k across the 17 of their papers we have counts for
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Valence and Na content dependences of superconductivity in NaxCoO2.yH2O
H. Sakurai, N. Tsujii, O. Suzuki +5
Various samples of sodium cobalt oxyhydrate with relatively large amounts of Na ions were synthesized by a modified soft-chemical process in which a NaOH aqueous solution was…
Optical transitions in quantum ring complexes
T. Kuroda, T. Mano, T. Ochiai +4
Making use of a droplet-epitaxial technique, we realize nanometer-sized quantum ring complexes, consisting of a well-defined inner ring and an outer ring. Electronic structure inhe…
Effect of charge state in nearby quantum dots on quantum Hall effect
K. Takehana, T. Takamasu, G. Kido +1
Magnetoresistance measurements have been performed on a gated two-dimensional electron system (2DES) separated by a thin barrier layer from a layer of InAs self-assembled quantum d…
Coexistence of a nearly spin-singlet state and antiferromagnetic long-range order in quantum spin system CuCdBO
Masashi Hase, Masanori Kohno, Hideaki Kitazawa +5
A 1/2 magnetization plateau in magnetic fields above 23 T and antiferromagnetic (AF) long-range order (AFLRO) in low fields were found in CuCdBO. Experimental results a…
Field-induced magnetic ordering in the Haldane system PbNi2V2O8
N. Tsujii, O. Suzuki, H. Suzuki +2
The Haldane system PbNi2V2O8 was investigated by the temperature dependent magnetization M(T) measurements at fields higher than H_c, with H_c the critical fields necessary to clos…
Magnetic phase diagram of antiferroquadrupole ordering in HoB2C2
Tatsuya Yanagisawa, Terutaka Goto, Yuichi Nemoto +4
The magnetic phase diagram for antiferro-quadrupole (AFQ) ordering in tetragonal HoBC has been investigated by measurements of elastic constants , and $C_{…