English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

We present high-frequency ultrasonic measurements on the filled skutteruditeSmOs$_4$Sb$_{12}$ under hydrostatic pressure. The results clarify that the 4$f$electrons in this compound transform from delocalized at ambient pressure tolocalized at high pressures with a crossover pressure of approximately 0.7 GPa.This drastic change in the 4$f$ electrons under pressure is apparently relatedto the non-Fermi liquid state, which appears in an intermediate-pressure rangeof 0.5-1.5 GPa. The results or our analysis strongly suggest that theferro-octupolar interaction becomes dominant at high pressure. Moreover, wereport the pressure dependence of the ultrasonic dispersion, which is due torattling, over a wide range of ultrasonic frequencies up to 323 MHz. Thedrastic change in the ultrasonic dispersions and the frequency dependentelastic anomaly in the $C_{11}$ mode at lower temperatures imply a possiblecoupling between rattling phonons and 4$f$ electrons.

Study of Localized Character of 4f Electrons and Ultrasonic Dispersions in SmOs4Sb12 by High-Pressure High-Frequency Ultrasonic Measurements