Zigzag phosphorene nanoribbons: one-dimensional resonant channels in two-dimensional atomic crystals

• Carlos. J. Páez,
• Dario. A. Bahamon,
• Ana L. C. Pereira and
• Peter. A. Schulz

Beilstein J. Nanotechnol. 2016, 7, 1983–1990, doi:10.3762/bjnano.7.189

• materials; constrictions; edge states; phosphorene nanoribbons; quantum dots; Introduction Low-dimensional systems have attracted attention over the past fifty years since the development of semiconductor epitaxial growth and deposition of metallic thin films [1]. The early scenario, back in the 1960s, as

• , created by an effective doubly degenerate band (in the relevant energy scale) associated to states strongly localized at the zigzag edges [11][12] of phosphorene nanoribbons, whose properties are explored using a new strictly one-dimensional resonant tunnelling device. The double-barrier resonant

• step from the upper zigzag edge), the resonant tunnelling permits a spectroscopy of the band structure of phosphorene nanoribbons in this energy window. Furthermore, progressive widening of the barriers (enhancing the step width of the constriction), thus nearing the constriction to the other edge