Raman scattering study of (K$_x$Sr$_{1-x}$)Fe$_2$As$_2$ ($x$ = 0.0, 0.4)

A. P. Litvinchuk; V. G. Hadjiev; M. N. Iliev; Bing Lv; A. M. Guloy; C. W. Chu

doi:10.1103/PhysRevB.78.060503

paper

Raman scattering study of (K $_{x}$ Sr $_{1 - x}$ )Fe $_{2}$ As $_{2}$ ( $x$ = 0.0, 0.4)

arXiv:0807.2284 · doi:10.1103/PhysRevB.78.060503

Abstract

Polarized Raman spectra of non-superconducting SrFe $_{2}$ As $_{2}$ and superconducting K $_{0.4}$ Sr $_{0.6}$ Fe $_{2}$ As $_{2}$ ( $T_{c} = 37$ K) are reported. All four phonon modes (A $_{1 g}$ + B $_{1 g}$ + 2E $_{g}$ ) allowed by symmetry, are found and identified. Shell model gives reasonable description of the spectra. No detectable anomalies are observed near the tetragonal-to-orthorhombic transition in SrFe $_{2}$ As $_{2}$ or the superconducting transition in K $_{0.4}$ Sr $_{0.6}$ Fe $_{2}$ As $_{2}$ .

4 pages, 4 figures, 2 tables

Raman scattering study of (Kx​Sr1−x​)Fe2​As2​ (x = 0.0, 0.4)

Abstract

References in corpus (2)

Raman scattering study of (K $_{x}$ Sr $_{1 - x}$ )Fe $_{2}$ As $_{2}$ ( $x$ = 0.0, 0.4)