3 papers
cond-mat.mes-hall2026
Mobile Exceptional Points Generate Momentum-Space Switching Domains
Jung-Wan Ryu, Chang-Hwan Yi
Exceptional points (EPs), non-Hermitian degeneracies where both eigenvalues and eigenvectors coalesce, play a central role in the topology of non-Hermitian spectra. Recent advances…
quant-ph2024
Pseudo-Hermitian Topology of Multiband Non-Hermitian Systems
Jung-Wan Ryu, Jae-Ho Han, Chang-Hwan Yi +2
The complex eigenenergies and non-orthogonal eigenstates of non-Hermitian systems exhibit unique topological phenomena that cannot appear in Hermitian systems. Representative examp…
cond-mat.mes-hall2024
Diamond molecular balance: Revolutionizing high-resolution mass spectrometry from MDa to TDa at room temperature
Donggeun Lee, Seung-Woo Jeon, Chang-Hwan Yi +14
The significance of mass spectrometry lies in its unparalleled ability to accurately identify and quantify molecules in complex samples, providing invaluable insights into molecula…