Zobrazeno 1 - 10
of 199
pro vyhledávání: '"Shoichi Nagata"'
Autor:
Shoichi Nagata
Publikováno v:
Results in Physics, Vol 6, Iss , Pp 946-951 (2016)
The Heisenberg uncertainty relation, ΔxΔpx ⩾ ℏ/2 (ℏ ≡ h/2π), is well known. The purpose of this paper is to study a linkage between macroscopic thermodynamic quantities and the uncertainty relation. To simplify matters, we consider one-dim
Externí odkaz:
https://doaj.org/article/f60a7be9233345a69ec26cd60cb68e0a
Potential role of uncertainty relation for thermodynamic quantities in the Planck’s cavity radiation
Autor:
Shoichi Nagata
Publikováno v:
The European Physical Journal D. 75
The electromagnetic field is well described in terms of one-dimensional quantum harmonic oscillator. The uncertainty product of canonically conjugate variables is quantized just like as for the energy quantization except constant factor. This is a ch
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cdaa783ad09811a5c020fc663a9c8d09
https://doi.org/10.1140/epjd/s10053-021-00232-2
https://doi.org/10.1140/epjd/s10053-021-00232-2
Autor:
Shoichi Nagata
Publikováno v:
Chemical Physics. 522:55-58
An expression of the entropy for massless photon gas in a unit volume is provided. A quantity, ( Δ x ) T ( Δ p x ) T , is introduced, which indicates the magnitude of an average uncertainty at certain temperature T. The entropy of the photon gas ca
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c454f2570429b72793a7717bd2ebbcb
https://doi.org/10.1016/j.chemphys.2019.02.001
https://doi.org/10.1016/j.chemphys.2019.02.001
Autor:
Shoichi Nagata
Publikováno v:
Chemical Physics. 504:8-12
An expression for the entropy of a monoatomic classical ideal gas is known as the Sackur-Tetrode equation. This pioneering investigation about 100 years ago incorporates quantum considerations. The purpose of this paper is to provide an alternative e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::db4d6aa4264c55c6178362f081d47bd6
https://doi.org/10.1016/j.chemphys.2018.02.001
https://doi.org/10.1016/j.chemphys.2018.02.001
Publikováno v:
Solid State Communications. 265:23-26
We have investigated the thermodynamic and electrical properties of spinel CuIr 2 S 4 . The temperature, T , dependence of the electrical resistivity ρ ( T ) , thermal conductivity, κ ( T ) , and thermoelectric power, S ( T ), show the abrupt jumps
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7bda24f3c2e20739ad453628085ad506
https://doi.org/10.1016/j.ssc.2017.07.021
https://doi.org/10.1016/j.ssc.2017.07.021
Publikováno v:
Journal of Magnetism and Magnetic Materials. 405:287-291
We have investigated the thermodynamic and electrical properties of spinel CuIrRhS 4 . The temperature ( T ) dependence of the electrical resistivity ( ρ ) shows metallic behaviour defined as ∂ ρ / ∂ T > 0 , in the range of 5 ≤ T ≤ 300 K .
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9c7e5c9982376b49a1c1f1f441a20a6
https://doi.org/10.1016/j.jmmm.2015.12.097
https://doi.org/10.1016/j.jmmm.2015.12.097
Autor:
Shoichi Nagata
Publikováno v:
Fluctuation and Noise Letters. 20:2150026
Research on fluctuations in energy and temperature is presented for a small specimen. The small specimen in contact with a heat bath shows energy fluctuations, [Formula: see text], at the constant temperature. On the other hand, when this small speci
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f19906aae9866e3a0b68c2a799b68bec
https://doi.org/10.1142/s0219477521500267
https://doi.org/10.1142/s0219477521500267
Publikováno v:
Journal of Alloys and Compounds. 598:133-136
We studied the electrical resistivity, thermal conductivity, and thermopower of thiospinel CuCrTiS 4 . Temperature (T) dependence of the electrical resistivity ( ρ ) is insulating in the whole temperature range we measured, 5 T 300 K . ρ ( T ) show
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3ea7f72b28aeddd540c34a726c71ebf9
https://doi.org/10.1016/j.jallcom.2014.01.222
https://doi.org/10.1016/j.jallcom.2014.01.222
Autor:
Norio Terada, Kazuyuki Matsubayashi, Naotoshi Kado, Shoichi Nagata, Shuji Ebisu, Yoshiya Uwatoko, Masakazu Ito
Publikováno v:
Journal of Magnetism and Magnetic Materials. 331:98-101
We studied the magnetic properties of thiospinel CuCrZrS 4 under pressure. At ambient pressure, the temperature dependence of magnetization shows a large irreversibility due to spin-glass freezing between the magnetizations with zero-field cooling an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::60b81e6ac51fc1dc8cad20ea76562e47
https://doi.org/10.1016/j.jmmm.2012.11.023
https://doi.org/10.1016/j.jmmm.2012.11.023
Publikováno v:
Philosophical Magazine. 92:2957-2969
It is difficult to find a typical compound to understand the spin-glass (SG). Only a few model compounds for the SG have been investigated; Fe0.50Mn0.50TiO3 as a short-range interacting three-dimensional (3D) Ising SG, Dy0.103Y0.897Ru2Si2 as a long-r
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5b2ba753828170d8b46dbedd29b15a2e
https://doi.org/10.1080/14786435.2012.678400
https://doi.org/10.1080/14786435.2012.678400