Scientific Results

Simple-to-Complex Transformation in Liquid Rubidium

Year: 2018

Authors: Gorelli FA., De Panfilis S., Bryk T., Ulivi L., Garbarino G., Parisiades P., Santoro M .

Autors Affiliation: [Gorelli, Federico A.; Santoro, Mario] INO CNR, I-50019 Sesto Fiorentino, Italy and European Lab Non Linear Spect, LENS, I-50019 Sesto Fiorentino, Italy.
[De Panfilis, Simone] Ist Italiano Tecnol, Ctr Life Nano Sci IIT Sapienza, I-00161 Rome, Italy.
[Bryk, Taras] NASU, Inst Condensed Matter Phys, UA-79011 Lvov, Ukraine.
[Ulivi, Lorenzo] IFAC CNR, I-50019 Sesto Fiorentino, Italy.
[Garbarino, Gaston; Parisiades, Paraskevas] European Synchrotron Res Facil, FR-38043 Grenoble, France.

Abstract: We investigated the atomic structure of liquid Rb along an isothermal path at 573 K, up to 23 GPa, by X-ray diffraction measurements. By raising the pressure, we observed a liquid-liquid transformation from a simple metallic liquid to a complex one. The transition occurs at 7.5 +/- 1 GPa which is slightly above the first maximum of the T-P melting line. This transformation is traced back to the density-induced hybridization of highest electronic orbitals leading to the accumulation of valence electrons between Rb atoms and to the formation of interstitial atomic shells, a behavior that Rb shares with Cs and is likely to be common to all alkali metals.


Volume: 9 (11)      Pages from: 2909  to: 2913

KeyWords: total scattering data; high-pressure; supercooled silicon; phase-transition; water
DOI: 10.1021/acs.jpclett.8b01094

Citations: 15
data from “WEB OF SCIENCE” (of Thomson Reuters) are update at: 2021-10-24
References taken from IsiWeb of Knowledge: (subscribers only)
Connecting to view paper tab on IsiWeb: Click here
Connecting to view citations from IsiWeb: Click here

This site uses cookies. If you decide to continue browsing we consider that you accept their use. For more information about cookies and how to delete them please read our Info Policy on cookies use.
Read more