H
Hitoshi Gomi
Researcher at Okayama University
Publications - 18
Citations - 562
Hitoshi Gomi is an academic researcher from Okayama University. The author has contributed to research in topics: Electrical resistivity and conductivity & Thermal conductivity. The author has an hindex of 8, co-authored 15 publications receiving 446 citations. Previous affiliations of Hitoshi Gomi include Carnegie Institution for Science & Tokyo Institute of Technology.
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Journal ArticleDOI
The high conductivity of iron and thermal evolution of the Earth’s core
Hitoshi Gomi,Kenji Ohta,Kei Hirose,Kei Hirose,Stéphane Labrosse,Stéphane Labrosse,Razvan Caracas,Matthieu J. Verstraete,John Hernlund,John Hernlund +9 more
TL;DR: In this paper, the electrical resistivity of iron and iron-silicon alloy was measured to 100 GPa, which is significantly higher than conventional estimates, implying rapid secular core cooling, an inner core younger than 1 Ga, and ubiquitous melting of the lowermost mantle during the early Earth.
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Electrical resistivity of substitutionally disordered hcp Fe-Si and Fe-Ni alloys: Chemically-induced resistivity saturation in the Earth's core
TL;DR: In this paper, the electrical resistivity of hexagonal-close-packed (hcp) iron was measured using four-terminal method in a diamond-anvil cell up to 90 GPa at 300 K, and the electronic band structure was computed by means of Korringa-Kohn-Rostoker method with coherent potential approximation (KKR-CPA).
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Electrical resistivity and thermal conductivity of hcp Fe-Ni alloys under high pressure: Implications for thermal convection in the Earth's core
TL;DR: In this article, the electrical resistivity of Fe-Ni alloys (iron with 5, 10, and 15% nickel) was measured using four-terminal method in a diamond-anvil cell up to 70 GPa at 300 K. The results demonstrate that measured resistivity increases linearly with increasing nickel impurity concentration.
Journal Article
Electrical resistivity of substitutionally disordered hcp Fe-Si and Fe-Ni alloys: Chemically-induced resistivity saturation in the Earth’s core
TL;DR: In this paper, the electrical resistivity of hexagonal-close-packed (hcp) iron was measured using four-terminal method in a diamond-anvil cell up to 90 GPa at 300 K, and the electronic band structure was computed by means of Korringa-Kohn-Rostoker method with coherent potential approximation (KKR-CPA).
Journal ArticleDOI
Impurity Resistivity of fcc and hcp Fe-Based Alloys: Thermal Stratification at the Top of the Core of Super-Earths
Hitoshi Gomi,Takashi Yoshino +1 more
TL;DR: In this paper, the impurity resistivities of substitutionally disordered hcp and fcc Fe-based alloys were calculated using the Akai-Kohn-Rostoker (KKR) package and the atomic sphere approximation (ASA).