Taxonomy of high pressure vibration spectra of zincblende semiconductor alloys based on the percolation model.

ABSTRACT: Due to their simple structure (two bond species randomly arranged on a cubic lattice), the zincblende A_1-xB_xC semiconductor alloys (zb-SCA) set a benchmark to explore how physical properties are impacted by disorder. A longstanding controversy was whether the lattice dynamics (phonons), governed by the bond force constant, i.e., a local physical property, is blind to the alloy disorder or actually sees it. Over the past two decades, we introduced the percolation model (PM) that distinguishes between like bonds depending on whether they vibrate in same (homo) or alien (hetero) environments (1-bond → 2-mode scheme). The PM seems to apply universally among zb-SCA, and hence would solve the controversy in favor of the second scenario. Here our aim is to take one step forw

SUBMITTER: Alhaddad T 

PROVIDER: S-EPMC11885623 | biostudies-literature | 2025 Jan

REPOSITORIES: biostudies-literature