Semantic Scholar Open Access 2011 12 sitasi

Softening of bond-stretching phonon mode in Ba 1-x K x BiO 3 at the metal-insulator transition

H. Khosroabadi S. Miyasaka J. Kobayashi K. Tanaka H. Uchiyama +2 lainnya

Lihat Sumber DOI

Abstrak

The dispersion of phonons in Ba1-xKxBiO3 along the (3+q, 0, 0) direction in reciprocal space was determined for x=0, 0.30, 0.37, 0.52 using high-resolution inelastic X-ray scattering. The observed phonon energies near \Gamma were in good agreement with published optical data. It was found that two high-energy modes strongly soften near q=0.25 when the system becomes metallic (x >0.35). There was no softening in the insulating phase, even at x=0.30, very near the metal-insulator transition. This suggests that the phonon softening is linked to the appearance of the Fermi-surface.

Topik & Kata Kunci

Physics

Penulis (7)

H. Khosroabadi

S. Miyasaka

J. Kobayashi

K. Tanaka

H. Uchiyama

A. Baron

S. Tajima

Format Sitasi

APA MLA BibTeX

Khosroabadi, H., Miyasaka, S., Kobayashi, J., Tanaka, K., Uchiyama, H., Baron, A. et al. (2011). Softening of bond-stretching phonon mode in Ba 1-x K x BiO 3 at the metal-insulator transition. https://doi.org/10.1103/PhysRevB.83.224525

Akses Cepat

Lihat di Sumber doi.org/10.1103/PhysRevB.83.224525

Informasi Jurnal

Tahun Terbit: 2011
Bahasa: en
Total Sitasi: 12×
Sumber Database: Semantic Scholar
DOI: 10.1103/PhysRevB.83.224525
Akses: Open Access ✓