News

[Young Kim and Prof. Changyoung Kim*] Growth and Electronic Structure of Copper Oxide Monolayer Epit... Aug 9, 2023 l Hit 603

Copper-based superconductors commonly have a CuO2 plane structure, where high-temperature superconductivity occurs. Due to these characteristics, extensive research has been conducted on whether high-temperature superconductivity can occur even in a single layer of the CuO2 plane. However, a pure CuO2 plane single laye...

[Hyungbin Lim, Jeongjae Lee and Takhee Lee] Mechanochemical synthesis and thin-film deposition of ze... Aug 1, 2023 l Hit 596

Metal-halide perovskites possess synthetic tunability in terms of their compositions and structures, which results in a facile control of the properties crucial for optoelectronic device applications. For instance, the optical bandgap of perovskites can be adjusted by means of halide compositions, which can generate a ...

[Younsik Kim, Dr. Soonsang Huh and Prof. Changyoung Kim] Kondo interaction in FeTe and its potential... Jul 13, 2023 l Hit 727

Finding d-electron heavy fermion states has been an important topic as the diversity in d-electron materials can lead to many exotic Kondo effect-related phenomena or new states of matter such as correlation-driven topological Kondo insulator. Yet, obtaining direct spectroscopic evidence for a d-electron heav...

[Yeahan Sur, Kwang-Tak Kim & Prof. Kee Hoon Kim] Optimized superconductivity in the vicinity of a ne... Jul 10, 2023 l Hit 863

CsV3Sb5 exhibits superconductivity at Tc=3.2 K after undergoing intriguing two high-temperature transitions: charge density wave order at ~98 K and electronic nematic order at Tnem~35 K. Here, we investigate nematic susceptibility in single crystals of Cs(V1-xTix)3Sb5 (x=0.00-0.06) where double-dome...

[Donghan Kim, Younsik Kim and Prof. Changyoung Kim] Electric control of Two-Dimensional Van Hove Sin... Mar 21, 2023 l Hit 1564

Divergent density of states (DOS) can induce extraordinary phenomena such as significant enhancement of superconductivity and unexpected phase transitions. Moreover, van Hove singularities (VHSs) lead to divergent DOS in two-dimensional (2D) systems. Despite recent interest in VHSs, only a few controllable cases have b...

[Eunho Song and Prof. Sungchul Hohng] Transcriptional pause extension benefits the stand-by rather t... Feb 17, 2023 l Hit 604

Transcriptional pause is essential for all types of termination. In this single-molecule study on bacterial Rho factor-dependent terminators, we confirm that the three Rho-dependent termination routes operate compatibly together in a single terminator, and discover that their termination efficiencies depend on the term...

[Moohyun Ahn, Prof. Byeongsu Yang and Prof. Jonghee Yoo] Searching for Invisible Axion Dark Matter w... Dec 5, 2022 l Hit 564

The axion has been postulated to solve the strong-CP problem in quantum chromodynamics, and it is a strong candidate for dark matter. Axion can couple to magnetic fields and convert to electromagnetic waves. Using this property, one can probe the dark matter axions. Our research team built a dark matter axion det...

[Kunihiro Yananose and Prof. Jaejun Yu] Growth of bilayer MoTe2 single crystals with strong non-line... Sep 21, 2022 l Hit 2037

The reduced symmetry in strong spin-orbit coupling materials such as transition metal ditellurides (TMDTs) gives rise to non-trivial topology, unique spin texture, and large charge-to-spin conversion efficiencies. Bilayer TMDTs are non-centrosymmetric and have unique topological properties compared to monolayer or tril...

[Kyeong-Yoon Baek, Dr. Jeongjae Lee, Prof. Tae-Woo Lee, Prof. Keehoon Kang & Prof. Takhee Lee] Mecha... Jul 25, 2022 l Hit 2413

Embedding metal–halide perovskite particles within an insulating host matrix has proven to be an effective strategy for revealing the outstanding luminescence properties of perovskites as an emerging class of light emitters. Particularly, unexpected bright green emission observed in a nominally pure zero-dimensio...

[KW An's Group] A photonic quantum engine driven by superradiance Jul 25, 2022 l Hit 3174

Performance of nano- and microscale heat engines can be improved with the help of quantum-mechanical phenomena. Recently, heat reservoirs with quantum coherence have been proposed to enhance engine performance beyond the Carnot limit even with a single reservoir. However, no physical realizations have been achieved so ...