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O: Fachverband Oberflächenphysik

O 81: Nanostructures at Surfaces I

O 81.1: Talk

Thursday, March 21, 2024, 10:30–10:45, MA 042

One-dimensional electronic structure of phosphorene chains — •Maxim Krivenkov¹, Maryam Sajedi¹, Dmitry Marchenko¹, Evangelos Golias², Oliver Rader¹, and Maxim Krivenkov¹ — ¹Helmholtz-Zentrum Berlin für Materialien und Energie, Elektronenspeicherring BESSY II, Albert-Einstein-Str. 15, 12489 Berlin, Germany — ²MAX IV Laboratory, Lund University, Fotongatan 2, 22484, Lund, Sweden

Phosphorene, a 2D allotrope of phosphorus, is very appealing to electronic technology due to its semiconducting properties with narrow band gap. Further reduction of dimensionality could give rise to exotic properties of its electronic structure. Using angle-resolved photoemission we studied P atomic wires self-assembled on Ag(111) substrate. Dispersion of the P band measured along and perpendicular to the wires, reveals pronounced electronic confinement in a 1D band, dispersionless in perpendicular direction to the wire. Our density functional calculations, apart from precise reproduction of the 1D band for the P/Ag(111), predict a 1D to 2D metallic transition in the electronic structure upon increasing density of the nanowire array.

Keywords: phosphorus; chains; one-dimensional; STM; ARPES