Microscopic Theory of Plasmons in Substrate-Supported Borophene

Anubhab Haldar, Cristian L. Cortes, Pierre Darancet*, Sahar Sharifzadeh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


We compute the dielectric properties of freestanding and metal-supported borophene from first-principles time-dependent density functional theory. We find that both the low- and high-energy plasmons of borophene are fully quenched by the presence of a metallic substrate at borophene-metal distances smaller than ≃9 Å. Based on these findings, we derive an electrodynamic model of the interacting, momentum-dependent polarizability for a two-dimensional metal on a model metallic substrate, which quantitatively captures the evolution of the dielectric properties of borophene as a function of metal-borophene distance. Applying this model to a series of metallic substrates, we show that maximizing the plasmon energy detuning between borophene and substrate is the key material descriptor for plasmonic performance.

Original languageEnglish (US)
Pages (from-to)2986-2992
Number of pages7
JournalNano letters
Issue number5
StatePublished - May 13 2020


  • borophene
  • electrodynamics
  • Electronic structure
  • plasmons

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering


Dive into the research topics of 'Microscopic Theory of Plasmons in Substrate-Supported Borophene'. Together they form a unique fingerprint.

Cite this