Laboratory for Unobtainable Functional Oxides

언옵테이늄 연구실

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We are an experimental condensed matter physics group focusing on many-body and topological phenomena in quantum materials and their potential applications. To this end, we design materials that do not exist in nature and realize new phases of matter through experiments. In particular, our research explores 1) Topologically ordered phases for topological qubits, which exhibit macroscopic quantum entanglement and fractional excitations, 2) Novel broken symmetry phases for next-generation spintronics and neuromorphic memory, 3)Optical materials with unique properties for advanced optics and photonics.

Major research field

Quantum materials, light-matter interaction, spectroscopy, oxide heterostructures, new functional materials

Desired field of research

Quantum materials, light-matter interaction, spectroscopy, oxide heterostructures, new functional materials

Research Keywords and Topics

Designing and discovering phases of matter that do not naturally exist
1. Quantum Materials: Many-body quantum entanglement, Fractional excitations, Topological qubits
– Realization of quantum spin liquid states via heterostructure engineering
– Detections and manipulations of fractional excitations through spintronics techniques
– Exploration of entangled quantum phases as platforms for topological qubits

2. Optical Materials: Materials for advanced optics and photonics
– Low-dimensional excitions, giant optical anisotropy, hyperbolic dispersion
– Design of bolometric materials for high-sensitivity infrared sensing
– Development of novel materials for optical modulators

3. Ferroic Materials: Emerging ferroic systems for future memory and logic applications
– Altermagnetic materials for next-generation spintronics
– Materials for multi-level and neuromorphic memory devices

Research Publications
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Physical Review Letters, Tunneling magnetoresistance in altermagnetic RuO2-based magnetic tunnel junctions (2025)
Nature Communications, Optical detection of bond-dependent and frustrated spin in the two-dimensional cobalt-based honeycomb antiferromagnet Cu3Co2SbO6 (2025)
Science Advances, Suppression of antiferromagnetic order by strain-enhanced frustration in honeycomb cobaltate (2024)
Nano Letters, Extended Oxygen Octahedral Tilt Proximity near Oxide Heterostructures (2023)
Physical Review B, Honeycomb oxide heterostructure as a candidate host for a Kitaev quantum spin liquid (2023)