Yu Kumagai

activity

20242026

collaborators

4 papers

cond-mat.mtrl-sci2026

Atomic-scale phase-field modeling with dopants: Stochastic self-consistent harmonic approximation with fractional site occupancy

Kairi Masuda, Yu Kumagai

Phase-field modeling has achieved great success in predicting pattern formation in materials, such as the formation of ferroelectric domains. However, because it is typically based…

cond-mat.mtrl-sci2026

Atomic-scale phase-field modeling for 2D ferroelectrics including non-Gaussian fluctuations

Kairi Masuda, Yu Kumagai

Atomic-scale phase-field modeling extends the phase-field framework down to the level of individual atoms by treating the probability density of atomic vibrations as a field variab…

cond-mat.mtrl-sci2025

Investigation of Hole Dopability in Oxygen $2 p$ -Dominated Bands

Thi Ngoc Huyen Vu, Yu Kumagai

The development of $p$ -type oxide semiconductors remains impeded by the inherently low-lying valence-band maximum (VBM) dominated by O-2 $p$ states. A prevailing approach to mitigat…

cond-mat.mes-hall2024

Exploring Intrinsic and Extrinsic $p$ -type Dopability of Atomically Thin $β$ -TeO $_{2}$ from First Principles

Rafael Costa-Amaral, Soungmin Bae, Vu Thi Ngoc Huyen +1

Two-dimensional (2D) $β$ -TeO $_{2}$ has gained attention as a promising material for optoelectronic and power device applications, thanks to its transparency and high hole mobility. H…

Atomic-scale phase-field modeling with dopants: Stochastic self-consistent harmonic approximation with fractional site occupancy

Atomic-scale phase-field modeling for 2D ferroelectrics including non-Gaussian fluctuations

Investigation of Hole Dopability in Oxygen 2p-Dominated Bands

Exploring Intrinsic and Extrinsic p-type Dopability of Atomically Thin β-TeO2​ from First Principles

Investigation of Hole Dopability in Oxygen $2 p$ -Dominated Bands

Exploring Intrinsic and Extrinsic $p$ -type Dopability of Atomically Thin $β$ -TeO $_{2}$ from First Principles