Quantum Matter Theory Group

INTRODUCTION

Welcome to the Quantum Matter Theory Group at APCTP!

The Quantum Matter Theory Group theoretically investigates emergent quantum phenomena in strongly correlated electrons within quantum materials, including van der Waals materials, transition-metal oxides, and strongly correlated metals. We develop effective models for interacting electrons in these materials and analyze their physical properties, such as magnetism and superconductivity, using both analytical and numerical methods.

2026

- Our paper titled "Giant orbital Hall effect from cubic Dresselhaus orbital coupling" in collaboration with Ms. Gwen Sevilen at ITB has been published in arXiv:2608.19648 on August 21.
- Our paper titled "Emergence of moir\'e magnetic chaos in twisted bilayer CrI3" in collaboration with Dr. Gyuyoung Park and Prof. OukJae Lee at KIST has been published in arXiv:2608.13062 on August 14.
- Our paper titled "Optimized control protocols for stable skyrmion creation using deep reinforcement learning" in collaboration with Mr. Ji Seok Song and Prof. Se Kwon Kim at KAIST has been published in npj Computational Materials on August 7.
- Dr. Sanghoon Lee and I have published our paper titled "Mobility-edge-embedded Hofstadter butterfly from a tilt-induced quasiperiodic potential" in Physical Review B 114, 014207 (2026), on July 21.
- Our paper titled "Non-Perturbative Renormalization Group for Ising-Nematic Criticality: A Closed-Form Nonlocal Ansatz" in collaboration with Mr. Hyeon Jung Kim and Prof. Ki-Seok Kim at POSTECH has been published in arXiv: 2605.30715 on May 29.
- Dr. Tilen Čadež has published a paper titled "Nonrelativistic versus relativistic quantum scars in billiard systems" in Discover Quantum Science 2, 15 (2026), on May 20. Congratulation, Tilen ! 🎉
- Dr. Sanghoon Lee, Dr. Tilen Čadež, and I have published our paper titled "Structural constraints on mobility edges in one-dimensional quasiperiodic systems" in Physical Review B 113, 174202 (2026), on May 15.
- Our paper titled "Topological Ising superconductivity in two-dimensional p-wave magnet" in collaboration with Dr. Gibaik Sim at University of Melbourne and Prof. Moon Jip Park at Hanyang University has been published in arXiv: 2605.01686 on May 5.
- Dr. Sanghoon Lee and I have published our paper titled "Mobility-edge-embedded Hofstadter butterfly from a tilt-induced quasiperiodic potential" in arXiv: 2604.12472, on April 15.
- Our paper titled "Optimized control protocols for stable skyrmion creation using deep reinforcement learning" in collaboration with Mr. Ji Seok Song and Prof. Se Kwon Kim at KAIST has been published in arXiv: 2603.24177 on May 5.
- Dr. Tilen Čadež and I have published our paper titled "Emergence of chiral p-wave and d-wave states in g-wave altermagnets" in arXiv: 2602.22736, on February 27.
- Dr. Tilen Čadež and I have published our paper titled "Neural scaling laws for deep regression on domain image data of twisted magnets" in Machine Learning: Science Technology, 7, 025011 (2026), on February 27.
- I have published a news & views article titled "Super-moiré spin textures revealed" in Nature Nanotechnology on February 13.
- Dr. Sanghoon Lee, Dr. Tilen Čadež, and I have published our paper titled "Structural constraints on mobility edges in one-dimensional quasiperiodic systems" in arXiv: 2601.15799, on January 22.
- Dr. Tilen Čadež has published his paper titled "Nonrelativistic versus relativistic quantum scars in billiard systems" in arXiv: 2601.11224, on January 16.

2025

- Dr. Sanghoon Lee joined our group on October 1. Welcome, Sanghoon ! 🎉
- Dr. Tilen Čadež and I have published our paper titled "Neural Scaling Laws for Deep Regression" in arXiv: 2509.10000, on September 15.
- Our paper titled "Emergence of Meron Kekulé Lattices in Twisted Néel Antiferromagnets," in collaboration with Prof. Se Kwon Kim's group at KAIST, has been published in npj Quantum Materials, 10, 68 (2025), on July 1.
- Mr. Abraham Nathan Sunanta joined our group on July 1 for a summer internship program. Welcome, Abraham ! 🎉
- Dr. Tilen Cadez joined our group on February 24. Welcome, Tilen ! 🎉
- Our paper titled "Emergence of Unpinned Dirac Points in Defected Photonic Crystals" in collaboration with Dr. Chang-Hwan Yi at PCS-IBS has been published in arXiv: 2502.10753.
- Our paper titled "Unconventional p-wave and finite-momentum superconductivity induced by altermagnetism through the formation of Bogoliubov Fermi surface" in collaboration with Prof. Moon Jip Park's group at Hanyang University has been published in Phys. Rev. B.111.054501 (2025).

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