Cheol-Hwan Park

collaborators

4 papers

cond-mat.mtrl-sci2026

First-principles study of bulk stacking, $J_{eff}$ picture, magnetic Hamiltonian, $g$ factors, and structural distortions of $I^\pm$ -RuCl $_{3}$

Seung-Ju Hong, Tae Yun Kim, Cheol-Hwan Park

$I^\pm$ -RuCl $_{3}$ is a candidate Kitaev material that exhibits zigzag antiferromagnetic ordering below 7 K. One contentious issue regarding this material is its bulk structure in the l…

cond-mat.mtrl-sci2025

Non-adiabatic phonon self-energy due to electrons with finite linewidths

Cheol-Hwan Park

We develop the theory of the non-adiabatic phonon self-energy arising from coupling to electrons with finite linewidths using the spectral representation of Green's functions. Our…

cond-mat.mtrl-sci2025

Lippmann-Schwinger Approach for Accurate Photoelectron Wavefunctions and Angle-Resolved Photoemission Spectra from First Principles

Ji Hoon Ryoo, Cheol-Hwan Park

We present a conceptually simple and technically straightforward method for calculating photoelectron wavefunctions that is easily integrable with standard wavefunction-based densi…

cond-mat.mtrl-sci2025

Theory of infrared magneto-optical effects from chiral phonons in solids

Chiara Fiorazzo, Cheol-Hwan Park, Ivo Souza +1

In crystals with broken time-reversal symmetry, zone-center phonons can acquire a finite angular momentum via velocity-dependent forces on the nuclei. Despite having the same order…

First-principles study of bulk stacking, Jeff​ picture, magnetic Hamiltonian, g factors, and structural distortions of I^±-RuCl3​

Non-adiabatic phonon self-energy due to electrons with finite linewidths

Lippmann-Schwinger Approach for Accurate Photoelectron Wavefunctions and Angle-Resolved Photoemission Spectra from First Principles

Theory of infrared magneto-optical effects from chiral phonons in solids

First-principles study of bulk stacking, $J_{eff}$ picture, magnetic Hamiltonian, $g$ factors, and structural distortions of $I^\pm$ -RuCl $_{3}$