Combined Light and Electron Scattering for Exploring Proximity Effects on Hydrogen Absorption in Vanadium

Wen Huang,Max Wolff,Xin Xiao,Xing’Ao Li,Sotirios A Droulias,Martin Brischetto,Björgvin Hjörvarsson,Parker Steichen

doi:10.3390/en14248251

Abstract

We investigate proximity effects on hydrogen absorption in ultra-thin vanadium layers through combing light transmission and electron scattering. We compare the thermodynamic properties of the vanadium layers, which are based on the superlattice structure of Cr/V (001) and Fe/V (001). We find an influence of the proximity effects on the finite-size scaling of the critical temperatures, which can be explained by a variation of dead layers in the vanadium. In addition to this, the proximity effects on hydrogen absorption are also verified from the changes of excess resistivity.

Highlights

IntroductionThe changes of physical properties are usually related to the influence of electronic structuretransformation and special physical properties arising from the composition
The physical properties of thin films are usually influenced by the presence of neighbor materials
We find thinner dead layers for the Cr/V superlattices, which is consistent with a larger critical temperature and larger hydrogen-hydrogen interaction in Cr/V (001) superlattices

Summary

Introduction

The changes of physical properties are usually related to the influence of electronic structuretransformation and special physical properties arising from the composition. Understanding these effects is significant, for the fundamental studies, and for their related technology applications. The proximity effects, which may be related to the different composition in the neighbor layers through the electron transfers and other physical properties, are conceivable as well for the thermodynamic properties of hydrogen absorption.

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Results

Conclusion