978 citations
Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.
- Kyoto UniversityJP223 papers
- The University of TokyoJP53 papers
- The University of OsakaJP48 papers
- Kyoto Bunkyo UniversityJP45 papers
- Tohoku UniversityJP29 papers
- Japan Science and Technology AgencyJP26 papers
- Brookhaven National LaboratoryUS19 papers
- High Energy Accelerator Research OrganizationJP18 papers
- National Institute of Advanced Industrial Science and TechnologyJP18 papers
- Spintronics Research Network of JapanJP16 papers
- Korea Advanced Institute of Science and TechnologyKR13 papers
- Tokyo Institute of TechnologyJP13 papers
10 papers · 1 filter
Experimental Proof of Universal Conductance Fluctuation in Quasi-1D Epitaxial BiSe Wires
Sadashige Matsuo, Kensaku Chida, Daichi Chiba +8
We report on conductance fluctuation in quasi-one-dimensional wires made of epitaxial BiSe thin film. We found that this type of fluctuation decreases as the wire lengt…
On the Parameterized Complexity of Associative and Commutative Unification
Tatsuya Akutsu, Takeyuki Tamura, Atsuhiro Takasu
This paper studies the unification problem with associative, commutative, and associative-commutative functions mainly from a viewpoint of the parameterized complexity on the numbe…
Enhanced ferromagnetic moment in Co-doped BiFeO3 thin films studied by soft X-ray circular dichroism
V. R. Singh, V. K. Verma, K. Ishigami +10
BiFeO (BFO) shows both ferroelectricity and magnetic ordering at room temperature but its ferromagnetic component, which is due to spin canting, is negligible. Substitution of…
Theoretical estimation of metabolic network robustness against multiple reaction knockouts using branching process approximation
Kazuhiro Takemoto, Takeyuki Tamura, Tatsuya Akutsu
In our previous study, we showed that the branching process approximation is useful for estimating metabolic robustness, measured using the impact degree. By applying a theory of r…
Phonon anomalies and lattice dynamics in superconducting oxychlorides CaCuOCl
Matteo D'Astuto, Ikuya Yamada, Paola Giura +6
We present a comprehensive study of the phonon dispersion in an underdoped, superconducting CaCuOCl crystal. We interpret the results using lattice dynamical calcul…
Cu NQR and NMR Studies of Optimally Doped Ca2-xNaxCuO2Cl2
Y. Itoh, T. Machi, I. Yamada +2
We report on Cu nuclear quadrupole resonance (NQR) and NMR studies of an optimally hole-doped superconductor Ca2-xNaxCuO2Cl2 (Tc ~ 28 K for x ~ 0.2). In spite of robust oxygen comp…
Radio-frequency electromagnetic field and vortex penetration in multilayered superconductors
Takayuki Kubo, Yoshihisa Iwashita, Takayuki Saeki
A multilayered structure with a single superconductor layer and a single insulator layer formed on a bulk superconductor is studied. General formulae for the vortex-penetration fie…
Infrared spectroscopy of small-molecule endofullerenes
T. Rõõm, L. Peedu, Min Ge +13
Hydrogen is one of the few molecules which has been incarcerated in the molecular cage of C and forms endohedral supramolecular complex H@C. In this confinement h…
Injection locking at zero field in two free layer spin-valves
Mario Carpentieri, Takahiro Moriyama, Bruno Azzerboni +1
This paper predicts the possibility to achieve synchronization (via injection locking to a microwave current) of spin-transfer torque oscillators based on hybrid spin-valves compos…
Low-frequency and shot noises in CoFeB/MgO/CoFeB magnetic tunneling junctions
Tomonori Arakawa, Takahiro Tanaka, Kensaku Chida +7
The low-frequency and shot noises in spin-valve CoFeB/MgO/CoFeB magnetic tunneling junctions were studied at low temperature. The measured 1/f noise around the magnetic hysteresis…