Y. Um

activity

20112014

most citedAnomalous dependence of the c-axis polarized Fe B

_{1 g}

phonon mode with Fe and Se concentrations in Fe

_{1 + y}

_{1 - x}

_{x}

31 citations · 39 across the 2 of their papers we have counts for

collaborators

3 papers

cond-mat.supr-con2014★ 8 cited

Superconductivity-induced Phonon Renormalization on NaFe $_{1 - x}$ Co $_{x}$ As

Y. J. Um, Yunkyu Bang, B. H. Min +2

We report a study of the lattice dynamics in superconducting NaFeAs (Tc = 8 K) and doped NaFe0.97Co0.03As (Tc = 20 K) using Raman light scattering. Five of the six phonon modes exp…

cond-mat.supr-con2012★ 31 cited

Anomalous dependence of the c-axis polarized Fe B $_{1 g}$ phonon mode with Fe and Se concentrations in Fe $_{1 + y}$ Te $_{1 - x}$ Se $_{x}$

Y. J. Um, A. Subedi, P. Toulemonde +10

We report an investigation of the lattice dynamical properties in a range of Fe $_{1 + y}$ Te $_{1 - x}$ Se $_{x}$ compounds, with special emphasis on the c-axis polarized vibration of Fe w…

cond-mat.supr-con2011

Raman Scattering Study of the Lattice Dynamics of Superconducting LiFeAs

Y. J. Um, J. T. Park, B. H. Min +4

We report an investigation of the lattice dynamical properties of LiFeAs using inelastic light scattering. Five out of the six expected phonon modes are observed. The temperature e…

Superconductivity-induced Phonon Renormalization on NaFe1−x​Cox​As

Anomalous dependence of the c-axis polarized Fe B1g​ phonon mode with Fe and Se concentrations in Fe1+y​Te1−x​Sex​

Raman Scattering Study of the Lattice Dynamics of Superconducting LiFeAs

Superconductivity-induced Phonon Renormalization on NaFe $_{1 - x}$ Co $_{x}$ As

Anomalous dependence of the c-axis polarized Fe B $_{1 g}$ phonon mode with Fe and Se concentrations in Fe $_{1 + y}$ Te $_{1 - x}$ Se $_{x}$