57 citations · 171 across the 9 of their papers we have counts for
9 papers
X-ray crystal structure analysis and the Ru valence of Ba4Ru3O10 single crystals
Taichi Igarashi, Yoshio Nogami, Yannick Klein +5
We present the single-crystalline x-ray diffraction study on the Ba4Ru3O10 consisting of the corner-shared Ru3O12 trimers. The crystal structure is re-determined from 78 to 300 K a…
Emergence of superconductivity at 45 K by lanthanum and phosphorus co-doping of CaFe2As2
Kazutaka Kudo, Keita Iba, Masaya Takasuga +5
Co-doping of lanthanum and phosphorus in CaFe2As2 induces superconductivity at 45 K. This superconducting transition temperature is higher than the 38 K transition in Ba1-xKxFe2As2…
Vacuum charge fractionlization re-examined
Y. Nogami
We consider a model of a quantized fermion field that is based on the Dirac equation in one dimensional space and re-examine how the fermion number of the vacuum, or the vacuum cha…
Multi-phase matching in the Grover algorithm
F. M. Toyama, W. van Dijk, Y. Nogami +2
Phase matching has been studied for the Grover algorithm as a way of enhancing the efficiency of the quantum search. Recently Li and Li found that a particular form of phase matchi…
Dirac's hole theory versus quantum field theory
F. A. B. Coutinho, D. Kiang, Y. Nogami +1
Dirac's hole theory and quantum field theory are usually considered equivalent to each other. For models of a certain type, however, the equivalence may not hold as we discuss in t…
Bohmian description of a decaying quantum system
Y. Nogami, F. M. Toyama, W. van Dijk
We present a Bohmian description of a decaying quantum system. A particle is initially confined in a region around the origin which is surrounded by a repulsive potential barrier.…