Scattering Strength Of Potassium On A Carbon Nanotube With Known Chirality

Abstract

We have measured the scattering strength of charged impurities on a semiconducting single-walled carbon nanotube with known chirality. The resistivity of the nanotube is measured as a function of the density of adsorbed potassium atoms, enabling the determination of the resistance added by an individual potassium atom. Holes are scattered 37 times more efficiently than electrons by an adsorbed potassium atom. The determined scattering strength is used to reveal the spatial extent and depth of the scattering potential for potassium, a model Coulomb adsorbate. Our result represents an essential experimental input to understand adsorbate-induced scattering and provides a crucial step for paving the way to rational design of nanotube-based sensors.

Publication Date

7-7-2016

Publication Title

Physical Review B

Volume

94

Issue

4

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1103/PhysRevB.94.045408

Socpus ID

84978401130 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84978401130

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