Fork stamping of pristine carbon nanotubes onto ferromagnetic contacts for spin-valve devices

Abstract

We present a fabrication scheme called 'fork stamping' optimized for the dry transfer of individual pristine carbon nanotubes (CNTs) onto ferromagnetic contact electrodes fabricated by standard lithography. We demonstrate the detailed recipes for a residue-free device fabrication and in-situ current annealing on suspended CNT spin-valve devices with ferromagnetic Permalloy (Py) contacts and report preliminary transport characterization and magnetoresistance experiments at cryogenic temperatures. This scheme can directly be used to implement more complex device structures, including multiple gates or superconducting contacts.

7 pages, 4 figures, submitted to IWEPNM 2015 conference proceedings (physica status solidi (b))

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Cited by in corpus (8)

• Resonant and inelastic Andreev tunneling observed on a carbon nanotube quantum dot
• Quantum capacitance mediated carbon nanotube optomechanics
• Electronic structure of carbon nanotubes on graphene substrates
• Quartz tuning-fork based carbon nanotube transfer into quantum device geometries
• Towards carbon nanotube growth into superconducting microwave resonator geometries
• Full characterization of a carbon nanotube parallel double quantum dot
• Supercurrent and phase slips in a ballistic carbon nanotube embedded into a van der Waals heterostructure
• Nano-assembled open quantum dot nanotube devices