50 citations · 160 across the 13 of their papers we have counts for
13 papers
Antiferromagnetic structure of alkali metal superoxide CsO
Takehito Nakano, Shun Kontani, Masatoshi Hiraishi +3
We have performed a powder neutron diffraction study on CsO, where the unpaired electron with in the orbital of the O ion is responsible for the magnetism.…
Spin-gap formation due to spin-Peierls instability in -orbital-ordered NaO
Mizuki Miyajima, Fahmi Astuti, Takahito Fukuda +11
We have investigated the low-temperature magnetism of sodium superoxide (NaO), in which spin, orbital, and lattice degrees of freedom are closely entangled. The magnetic susc…
Ferrimagnetic States of Na-K Alloy Clusters in Zeolite Low-Silica X
Takehito Nakano, Shingo Araki, Luu Manh Kien +7
In zeolite low-silica X (LSX), beta-cages with the inside diameter of approx 7 AA{} are arrayed in a diamond structure. Among them, supercages with the inside diameter of approx 13…
Origin of magnetic moments and ferromagnetic properties of potassium clusters in zeolite A
Takehito Nakano, Shingo Araki, Nguyen Hoang Nam +5
K clusters arrayed in zeolite A are investigated in detail. K clusters are generated in regular alpha-cages of zeolite A by the loading of guest K metal at a loading density of K a…
Metallic State in Rubidium-Loaded Low-Silica X zeolite
Peter Jeglič, Takehito Nakano, Tadej Mežnaršič +2
The ground state of alkali metals when the particle size decreases from bulk to nanometric atomic clusters is inevitably accompanied by quantum effects that can suppress their pris…
High-field Magnetism of the Honeycomb-lattice Antiferromagnet Cu(pymca)(ClO)
Akira Okutani, Takanori Kida, Yasuo Narumi +6
We report on the experimental results of magnetic susceptibility, specific heat, electron spin resonance (ESR), and high-field magnetization measurements on a polycrystalline sampl…
Magnetism and high-magnetic field magnetization in alkali superoxide CsO2
Mizuki Miyajima, Fahmi Astuti, Takeshi Kakuto +9
Alkali superoxide CsO2 is one of candidates for the spin-1/2 one-dimensional (1D) antiferromagnet, which may be sequentially caused by an ordering of the pi-orbital of O2- molecule…
Thermally Activated Motion of Sodium Cations in Insulating Parent Low-Silica X Zeolite
Mutsuo Igarashi, Peter Jeglič, Tadej Mežnaršič +4
We report a Na spin-lattice relaxation rate, , in low-silica X zeolite. follows multiple BPP-type behavior as a result of thermal motion of sodium catio…
Magnetodielectric detection of magnetic quadrupole order in Ba(TiO)Cu(PO) with CuO square cupolas
K. Kimura, P. Babkevich, M. Sera +12
In vortex-like spin arrangements, multiple spins can combine into emergent multipole moments. Such multipole moments have broken space-inversion and time-reversal symmetries, and c…
Observation of the orbital quantum dynamics in the spin-1/2 hexagonal antiferromagnet Ba3CuSb2O9
Yibo Han, Masayuki Hagiwara, Takehito Nakano +4
We explore orbital dynamics in the spin liquid candidate Ba3CuSb2O9 using multi-frequency electron spin resonance. We prepared two high quality single crystals. The crystal with a…
Evolution of the density of states at the Fermi level across the metal-to-insulator crossover in alkali doped zeolite
Mutsuo Igarashi, Peter Jeglic, Andraz Krajnc +4
We report a systematic nuclear magnetic resonance investigation of the Na spin-lattice relaxation rate, , in sodium loaded low-silica X (LSX) zeolite, Na/Na$_{12}…
Absence of Jahn-Teller transition in the hexagonal Ba3CuSb2O9 single crystal
N. Katayama, K. Kimura, Y. Han +15
We present a comprehensive structural study on perovskite-type 6H-Ba3CuSb2O9, which exhibits a spin-orbital short-range ordering on a honeycomb-based lattice. By combining synchrot…
NMR study of thermally activated paramagnetism in metallic low-silica X zeolite filled with sodium atoms
Mutsuo Igarashi, Takehito Nakano, Pham Tan Thi +8
We report a \^{23}Na and \^{27}Al nuclear magnetic resonance (NMR) investigation of low-silica X (LSX) zeolite with chemical formula Na_{12}Al_{12}Si_{12}O_{48} (Na_{12}-LSX) loade…