News

[Wonjin Jang, Min-Kyun Cho / Prof. Dohun Kim] Single-Shot Readout of a Driven Hybrid Qubit in a GaAs... Jun 15, 2021 l Hit 2158

We report a single-shot-based projective readout of a semiconductor hybrid qubit formed by three electrons in a GaAs double quantum dot. Voltage-controlled adiabatic transitions between the qubit operations and readout conditions allow high-fidelity mapping of quantum states. We show that a large ratio both in relaxati...

[Youjin Lee, Prof. Kee Hoon Kim and Prof. Je-Geun Park] Possible persistence of multiferroic order d... Jun 8, 2021 l Hit 1114

Realizing a state of matter in two dimensions has repeatedly proven a novel route of discovering new physical phenomena. Van der Waals (vdW) materials have been at the center of these now extensive research activities. They offer a natural way of producing a monolayer of matter simply by mechanical exfoliation. This wo...

[Pyeongjae Park, Kisoo Park and Prof. Je-Geun Park] Spin texture induced by non-magnetic doping and ... Apr 20, 2021 l Hit 1072

Novel effects induced by nonmagnetic impurities in frustrated magnets and quantum spin liquid represent a highly nontrivial and interesting problem. A theoretical proposal of extended modulated spin structures induced by doping of such magnets, distinct from the well-known skyrmions has attracted significant interest. ...

[Daeho Yang, Seunghoon Oh, Junseok Han, Gibeom Son, Jinuk Kim and Kyungwon An] Realization of supera... Mar 8, 2021 l Hit 2148

Superabsorption refers to a 'super' version of absorption just like superradiance is a 'super' version of emission. In superabsorption, correlated atoms collectively absorb light. The light can be absorbed completely and the number of absorbed photons is proportional to the square of the number of atoms. Although super...

[Prof. Cheol-Hwan Park] Outstanding Referees of the American Physical Society Mar 3, 2021 l Hit 680

Professor Cheol-Hwan Park is selected and honored with the Outstanding Referee designation of the American Physical Society (APS). APS has selected 151 Outstanding Referees for 2021 who have demo...

[Sunghoon Kim, Joon-Hyuk Ko, Prof. Wonho Jhe ] Universal Theory of Dynamic Force Microscopy for Exac... Feb 25, 2021 l Hit 643

Force reconstruction in dynamic force microscopy (DFM) is a nontrivial problem that requires deconvolution of integrals. However, conventional reconstruction methods, which recover forces from single-frequency motion of the cantilever at its resonance, exhibit non-negligible error and reconstruction instability in the ...

[Seung Hun Lee, Hong Chul Choi, Prof. Bohm-Jung Yang] Odd-parity spin-triplet superconductivity in c... Feb 18, 2021 l Hit 644

We propose a route to achieve odd-parity spin-triplet (OPST) superconductivity in metallic collinear antiferromagnets with inversion symmetry. Owing to the existence of hidden antiunitary symmetry, which we call the effective time-reversal symmetry (eTRS), the Fermi surfaces of ordinary antiferromagnetic metals are gen...

[Keehoon Kang, Prof. Takhee Lee] Layer-by-Layer Structural Identification of 2D Ruddlesden–Popper Hy... Jan 28, 2021 l Hit 2722

Application of two-dimensional (2D) organic–inorganic hybrid halide perovskites in optoelectronic devices requires a detailed understanding of the local structural features including the Pb–I bonding in the 2D layers and the organic–inorganic interaction between the organic spacer molecules and the pe...

[Sangwoo Sim, Heejun Yang and Prof. Je-Geun Park] Sizable Suppression of Thermal Hall Effect upon Is... Jan 14, 2021 l Hit 589

We report measurements of the thermal Hall effect in single crystals of both pristine and isotopically substituted strontium titanate. We discovered a two orders of magnitude difference in the thermal Hall conductivity between SrTi16O3 and 18O-enriched SrTi18O3 samples. In most temperature ranges, the magnitude of ther...

[Minsu Kang and Prof. Heonsu Jeon] Submicron-scale pattern generation via maskless digital photolith... Dec 17, 2020 l Hit 641

Maskless photolithography based on the digital micromirror device (DMD), a two-dimensional micromirror array, is considered the next-generation low-cost lithographic technology. However, the DMD-based digital photolithography has been implemented only for micrometre-scale pattern generation, whereas sophisticated photo...