Seokbae Lee

activity

20092025

most citedWeak-link behavior of grain boundaries in superconducting Ba(Fe1-xCox)2As2 bicrystals

173 citations · 220 across the 11 of their papers we have counts for

collaborators

11 papers

cond-mat.str-el2025

Hybridization gap and $f$ -electron effect evolutions with Cd- and Sn-doping in CeCoIn $_{5}$ via infrared spectroscopy

Myounghoon Lee, Yu-Seong Seo, Seulki Roh +4

We investigated hole (Cd)- and electron (Sn)-doped CeCoIn $_{5}$ (CeCo(In $_{1 - x} T_{x}$ ) $_{5}$ ( $T$ = Cd or Sn)) using infrared spectroscopy. Doping-dependent hybridization gap distributio…

cond-mat.str-el2023

Temperature-dependent $f$ -electron evolution in CeCoIn $_{5}$ via a comparative infrared study with LaCoIn $_{5}$

Myounghoon Lee, Yu-Seong Seo, Seulki Roh +6

We investigated CeCoIn $_{5}$ and LaCoIn $_{5}$ single crystals, which have the same HoCoGa $_{5}$ -type tetragonal crystal structure, using infrared spectroscopy. However, while CeCoIn $_{5}$ …

cond-mat.supr-con2023

Doping-dependent superconducting physical quantities of K-doped BaFe $_{2}$ As $_{2}$ obtained through infrared spectroscopy

Seokbae Lee, Yu-Seong Seo, Seulki Roh +3

We investigated four single crystals of K-doped BaFe $_{2}$ As $_{2}$ (Ba-122), Ba $_{1 - x}$ K $_{x}$ Fe $_{2}$ As $_{2}$ with $x$ = 0.29, 0.36, 0.40, and 0.51, using infrared spectroscopy. We explored…

cond-mat.str-el2022

Electron-hole symmetry in quasiparticle spectral weight of cuprates observed via infrared and photoemission spectroscopy

Myounghoon Lee, Dongjoon Song, Yu-Seong Seo +4

We performed an optical spectroscopy study on single crystals of Pr $_{0.85}$ LaCe $_{0.15}$ CuO $_{4 - δ}$ (PLCCO) to revisit the electron-hole asymmetry, which has been understood as a…

cond-mat.str-el2021★ 3 cited

Evolution of electronic structure of Ru-doped single-crystal iridiates, Sr $_{2}$ Ir $_{1 - x}$ Ru $_{x}$ O $_{4}$

Seokbae Lee, Yu-Seong Seo, Eilho Jung +7

We investigated Ru-doped single-crystal 5 $d$ iridiates, Sr $_{2}$ Ir $_{1 - x}$ Ru $_{x}$ O $_{4}$ , at three different doping concentrations ( $x =$ 0.01, 0.07 and 0.10) using optical spectrosco…

cond-mat.str-el2021

Correlation effects obtained from optical spectra of Fe-pnictides using an extended Drude-Lorentz model analysis

Seokbae Lee, Yu-Seong Seo, Seulki Roh +3

We introduce an analysis model, an extended Drude-Lorentz model, and apply it to Fe-pnictide systems to extract their electron-boson spectral density functions (or correlation spec…

cond-mat.str-el2021★ 11 cited

Magnetic-order-driven metal-insulator transitions in the quasi-one-dimensional spin-ladder compounds BaFe $_{2}$ S $_{3}$ and BaFe $_{2}$ Se $_{3}$

Seulki Roh, Soohyeon Shin, Jaekyung Jang +9

The quasi-one-dimensional spin ladder compounds, BaFe $_{2}$ S $_{3}$ and BaFe $_{2}$ Se $_{3}$ , are investigated by infrared spectroscopy and density functional theory (DFT) calculations. We ob…

cond-mat.mtrl-sci2018★ 27 cited

Oxygen vacancy-induced structural evolution of SrFeO $_{3 - x}$ epitaxial thin film from brownmillerite to perovskite

Seulki Roh, Seokbae Lee, Myounghoon Lee +8

We investigated SrFeO $_{3 - x}$ thin films on a SrTiO $_{3}$ (001) substrate prepared via pulsed laser epitaxy using an optical spectroscopy technique. The oxygen vacancy level ( $x$ ) wa…

cond-mat.supr-con2015

Hidden non-Fermi liquid behavior caused by magnetic phase transition in Ni-doped Ba-122 pnictides

Seokbae Lee, Kiyoung Choi, Eilho Jung +4

We studied two BaFe2-xNixAs2 (Ni-doped Ba-122) single crystals at two dfferent doping levels (underdoped and optimally doped) using an optical spectroscopic technique. The underdop…

cond-mat.supr-con2014★ 6 cited

Electrodynamics of superconducting pnictide superlattices

A. Perucchi, F. Capitani, P. Di Pietro +8

It has been recently reported (S. Lee et al., Nature Materials 12, 392, 2013) that superlattices where layers of the 8% Co-doped BaFe2As2 superconducting pnictide are intercalated…

cond-mat.supr-con2009★ 173 cited

Weak-link behavior of grain boundaries in superconducting Ba(Fe1-xCox)2As2 bicrystals

S. Lee, J. Jiang, J. D. Weiss +17

We show that despite the low anisotropy, strong vortex pinning and high irreversibility field Hirr close to the upper critical field Hc2 of Ba(Fe1-xCox)2As2, the critical current d…

Hybridization gap and f-electron effect evolutions with Cd- and Sn-doping in CeCoIn5​ via infrared spectroscopy

Temperature-dependent f-electron evolution in CeCoIn5​ via a comparative infrared study with LaCoIn5​

Doping-dependent superconducting physical quantities of K-doped BaFe2​As2​ obtained through infrared spectroscopy