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Electrically driven spin resonance in a bent disordered carbon nanotube

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Article number195440
<mark>Journal publication date</mark>24/11/2014
<mark>Journal</mark>Physical review B
Issue number19
Volume90
Number of pages10
Publication StatusPublished
<mark>Original language</mark>English

Abstract

Resonant manipulation of carbon nanotube valley-spin qubits by an electric field is investigated theoretically. We develop a new analysis of electrically driven spin resonance exploiting fixed physical characteristics of the nanotube: a bend and inhomogeneous disorder. The spectrum is simulated for an electron valley-spin qubit coupled to a hole valley-spin qubit and an impurity electron spin, and features that coincide with a recent measurement are identified. We show that the same mechanism allows resonant control of the full four-dimensional spin-valley space.