activity
20202026
most citedDensest binary sphere packings and phase diagram : revisited

20 citations · 37 across the 7 of their papers we have counts for

collaborators

7 papers

math-ph2026

Mathematical crystal chemistry: A formal theory for crystal structure prediction by generalized disjunctive programming

Ryotaro Koshoji

Inorganic structural chemistry leads naturally to a theory for crystal structure prediction formalized by a generalized disjunctive programming (GDP), which is formulated using con…

cond-mat.mtrl-sci2025

Mathematical crystal chemistry II: Random search for ionic crystals and analysis on oxide crystals registered in ICSD

Ryotaro Koshoji

Mathematical crystal chemistry views crystal structures as the optimal solutions of mathematical optimization problem formalizing inorganic structural chemistry. This paper introdu…

cond-mat.mtrl-sci2024

Mathematical Crystal Chemistry

Ryotaro Koshoji, Taisuke Ozaki

Efficient heuristics have predicted many functional materials such as high-temperature superconducting hydrides, while inorganic structural chemistry explains why and how the cryst…

cond-mat.mtrl-sci2022

Prediction of quaternary hydrides based on densest ternary sphere packings

Ryotaro Koshoji, Masahiro Fukuda, Taisuke Ozaki

We exhaustively search quaternary metal hydrides based on the (13-2-1) and (13-3-1) structures that are the two of the putative densest ternary sphere packings in cubic systems [R.…

cond-mat.soft2021

Diverse densest ternary sphere packings

Ryotaro Koshoji, Taisuke Ozaki

The exploration of the densest sphere packings is a fundamental problem in mathematics and a wide variety of sciences including materials science. We present our exhaustive computa…

physics.comp-ph2021★ 17 cited

Densest ternary sphere packings

Ryotaro Koshoji, Taisuke Ozaki

We present our exhaustive exploration of the densest ternary sphere packings (DTSPs) for 45 radius ratios and 237 kinds of compositions, which is a packing problem of three kinds o…

cond-mat.mtrl-sci2020★ 20 cited

Densest binary sphere packings and phase diagram : revisited

Ryotaro Koshoji, Mitsuaki Kawamura, Masahiro Fukuda +1

We revisit the densest binary sphere packings (DBSP) under the periodic boundary conditions and present an updated phase diagram, including newly found 12 putative densest structur…