424 citations · 802 across the 16 of their papers we have counts for
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Roles of Fe-ion irradiation on MgB thin films: Structural, superconducting, and optical properties
Dzung T. Tran, Tien Le, Yu-Seong Seo +8
The effects of Fe-ion irradiation on the crystal structure and superconducting properties of MgB thin films were investigated. Pristine samples were prepared using hybrid physi…
Probing superconducting gap in CeH under pressure
Zi-Yu Cao, Seokmin Choi, Liu-Cheng Chen +11
The recent discovery of superconductivity in hydrogen-rich compounds has garnered significant experimental and theoretical interest because of the record-setting critical temperatu…
Bosonic spectrum of a correlated multiband system, BaFe1.80Co0.20As2, obtained via infrared spectroscopy
Chandan Kumar Panda, Hong Gu Lee, Hwiwoo Park +3
We investigated a single crystal BaFe(2-x)CoxAs2 (Co-doped BaFe2As2: Co-doped Ba122) with x = 0.20 using infrared spectroscopy. We obtained the bosonic spectrum from the measured s…
Artificially Engineered Nanostrain in Iron Chalcogenide Superconductor Thin Film for Enhancing Supercurrent
Sehun Seo, Heesung Noh, Ning Li +13
Although nanoscale deformation, such as nanostrain in iron chalcogenide (FeSexTe1-x, FST) thin films, has attracted attention owing to the enhancement of general superconducting pr…
Influence of carbon-ion irradiation on the superconducting critical properties of MgB thin films
Soon-Gil Jung, Seung-Ku Son, Duong Pham +4
We investigate the influence of carbon-ion irradiation on the superconducting critical properties of MgB thin films. MgB films of two thicknesses viz. 400 nm (MB400nm) and…
A peak in the critical current for quantum critical superconductors
Soon-Gil Jung, Soonbeom Seo, Sangyun Lee +3
Generally, studies of the critical current Ic are necessary if superconductors are to be of practical use because Ic sets the current limit below which there is a zero-resistance s…
Pressure dependence of upper critical fields in FeSe single crystals
Ji-Hoon Kang, Soon-Gil Jung, Sangyun Lee +5
We investigate the pressure dependence of the upper critical fields (μ) for FeSe single crystals with pressure up to 2.57 GPa. The superconducting (SC) properties sho…
Enhanced critical current density in the pressure-induced magnetic state of the high-temperature superconductor FeSe
Soon-Gil Jung, Ji-Hoon Kang, Eunsung Park +5
We investigate the relation of the critical current density (Jc) and the remarkably increased superconducting transition temperature (Tc) for the FeSe single crystals under pressur…
Superconductivity at 7.4 K in Few Layer Graphene by Li-intercalation
Anand P. Tiwari, Soohyeon Shin, Eunhee Hwang +3
Superconductivity in graphene has been highly sought after for its promise in various device applications and for general scientific interest. Ironically, the simple electronic str…
Effect of SiC-Impurity Layer and Growth Temperature on MgB2 Superconducting Tapes Fabricated by HPCVD
Mahipal Ranot, Won Kyung Seong, Soon-Gil Jung +5
The influence of SiC-impurity layer and growth temperature on microstructure and superconducting properties were studied for MgB2 superconducting tapes. The pulsed laser deposition…
Perfect Domain-Lattice Matching Between MgB2 and Al2O3: Single-Crystal MgB2 Thin Films Grown on Sapphire
Won Kyung Seong, Sangjun Oh, Won Nam Kang*
We have found that single-crystal films can be grown on (0001) Al2O3 substrates through the golden relation of a perfect lattice-matching ratio between the a-axis lattice constants…
Fabrication of FeSe1-x superconducting films with bulk properties
Soon-Gil Jung, Nam Hoon Lee, Eun-Mi Choi +4
We have fabricated high-quality FeSe1-x superconducting films with a bulk Tc of 11-12 K on different substrates, Al2O3(0001), SrTiO3(100), MgO(100), and LaAlO3(100), by using a pul…
Potassium-doped BaFe2As2 superconducting thin films with a transition temperature of 40 K
Nam Hoon Lee, Soon-Gil Jung, Dong Ho Kim +1
We report the growth of potassium-doped BaFe2As2 thin films, where the major charge carriers are holes, on Al2O3 (0001) and LaAlO3 (001) substrates by using an ex-situ pulsed laser…
In-situ fabrication of cobalt-doped SrFe2As2 thin films by using pulsed laser deposition with excimer laser
Eun-Mi Choi, Soon-Gil Jung, Nam Hoon Lee +6
The remarkably high superconducting transition temperature and upper critical field of iron(Fe)-based layered superconductors, despite ferromagnetic material base, open the prospec…
Influence of Mg Deficiency on the Superconductivity in MgB2 Thin Films Grown by using HPCVD
Ji Young Huh, Won Kyung Seong, Soon-Gil Jung +1
The effects of Mg deficiency in MgB2 films grown by using hybrid physical-chemical vapor deposition were investigated after vacuum annealing at various temperatures. High-quality M…