Spin-orbit interaction and anomalous spin relaxation in carbon nanotube quantum dots

2007/12/31 by D. V. Bulaev, Denis V. Bulaev, Björn Trauzettel +2 · 5 citations
Materials Science · Physics and Astronomy · #Graphene research and applications #Quantum and electron transport phenomena #Topological Materials and Phenomena #cond-mat.mes-hall

paper · pdf · doi:10.1103/physrevb.77.235301

published as Phys. Rev. B 77, 235301 (2008) · 19 pages, 12 figures

openalex publication_date 2008/06/03 · arxiv created 2008/06/04 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/30

Abstract

We study spin relaxation and decoherence in nanotube quantum dots caused by electron-lattice and spin-orbit interaction and predict striking effects induced by magnetic fields B. For particular values of B, destructive interference occurs resulting in ultralong spin relaxation times T₁ exceeding tens of seconds. For small phonon frequencies \ensuremathω, we find a 1/√\ensuremathω spin-phonon noise spectrum---a dissipation channel for spins in quantum dots---which can reduce T₁ by many orders of magnitude. We show that nanotubes exhibit zero-field level splitting caused by spin-orbit interaction. This enables an all-electrical and phase-coherent control of spin.

Citations

• Spin relaxation and anticrossing in quantum dots: Rashba versus Dresselhaus spin-orbit coupling
• Ambiente Informático Interactivo para el aprendizaje de las cónicas
• Electronic Transport Spectroscopy of Carbon Nanotubes in a Magnetic Field

Cited by

• Hyperfine interaction and electron-spin decoherence in graphene and carbon nanotube quantum dots
• All-Optical Manipulation of Electron Spins in Carbon-Nanotube Quantum Dots
• Bends in nanotubes allow electric spin control and coupling
• Helical Modes in Carbon Nanotubes Generated by Strong Electric Fields
• Quantum transport in carbon nanotubes