4 citations · 5 across the 3 of their papers we have counts for
6 papers
First-principles study on the specific heat jump in the glass transition of silica glass and the Prigogine-Defay ratio
Koun Shirai, Kota Watanabe, Hiroyoshi Momida
The most important characteristic of glass transition is a jump in specific heat . Despite its significance, no standard theory exists to describe it. In this study, first-…
Interpretation of the Formation Volume of Defects in Crystal Growth
Koun Shirai
In the calculation of the formation enthalpy of a defect, a stress term accompanying the formation volume of the defect appears. This formation volume is conventionally interpreted…
Hydrogenation, dehydrogenation of -tetragonal boron and its transition to -orthorhombic boron
Naoki Uemura, Koun Shirai, Jens Kunstmann +2
Boron bulk crystals are marked by exceptional structural complexity and unusual related physical phenomena. Recent reports of hydrogenated -tetragonal and a new -orthorhombic…
On the unattainability of absolute zero temperature and the Nernst heat theorem
Koun Shirai
It is sometimes argued that the unattainability of zero temperature is a consequence of the second law of thermodynamics. Historically, the independence of the unattainability of z…
Residual Entropy and Refinement of the Third-Law Expression
Koun Shirai
Although the third law of thermodynamics was established almost a century ago, it is not yet universally considered to be a fundamental law of physics. A major problem is that ther…
Impact of Ferroelectric Distortion on Thermopower in BaTiO3
Hiroaki Saijo, Kunihiko Yamauchi, Koun Shirai +1
We present a strategy for increasing thermoelectric performance by invoking ferroelectric distortion in a transition-metal oxide. By using an ab initio calculation approach with th…