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Electronic structure of Bi nanolines on InAs(100)
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- Nafday, Dhani (författare)
- Asia Pacific Center for Theoretical Physics (APCTP),Asia Pacific Ctr Theoret Phys, Pohang 790784, Gyeonbuk, South Korea.
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- Richter, Christine (författare)
- Université de Cergy-Pontoise,University of Paris-Saclay,CY Cergy Paris Univ, Lab Phys Mat & Surfaces, 5 Mail Gay Lussac, F-95031 Cergy Pontoise, France.;Univ Paris Saclay, LIDYL, CNRS, CEA, F-91191 Gif Sur Yvette, France.
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- Heckmann, Olivier (författare)
- University of Paris-Saclay,Université de Cergy-Pontoise,CY Cergy Paris Univ, Lab Phys Mat & Surfaces, 5 Mail Gay Lussac, F-95031 Cergy Pontoise, France.;Univ Paris Saclay, LIDYL, CNRS, CEA, F-91191 Gif Sur Yvette, France.
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- Asia Pacific Center for Theoretical Physics (APCTP) Asia Pacific Ctr Theoret Phys, Pohang 790784, Gyeonbuk, South Korea (creator_code:org_t)
- Elsevier BV, 2023
- 2023
- Engelska.
- Ingår i: Applied Surface Science. - : Elsevier BV. - 0169-4332 .- 1873-5584. ; 611
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
Stäng
- Self-assembled nanolines are attractive to build the technological devices of next generation, but characterizing their electronic properties is often difficult to achieve. In this work we employ angle-resolved photoemission spectroscopy and density functional theory to clarify the electronic structure exhibited by self-assembled Bi nanolines grown on the InAs(100) surface. A surface resonance associated to the reconstructed ζ(4 × 2) surface is visible in the photoemission spectra before and after the formation of the Bi nanolines. This demonstrates that Bi deposition does not necessarily drive a transition to an unreconstructed surface in the substrate, which is contrary to what was reported in previous studies. In addition, experiment and theory show the presence of a flat band located in the band gap of InAs, just above the valence band maximum. This flat band is associated to the Bi nanolines and possesses a strong orbital character, consistent with its unidimensional nature. These spectral features suggest that Bi nanolines on InAs(100) may have a strongly polarized conductivity, which makes them suitable to be exploited as nanowires in nanotechnology. The coexistence with an accumulation layer suggests an even farther functionalization.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- Bi nanolines
- Density-functional theory
- InAs surface
- Photoemission spectroscopy
- Self-assembly
- Bi nanolines
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