Oxide-based platform for reconfigurable superconducting nanoelectronics

We report quasi-1D superconductivity at the interface of LaAlO3 and SrTiO3. The material system and nanostructure fabrication method supply a new platform for superconducting nanoelectronics. Nanostructures having line widths w ∼ 10 nm are formed from the parent two-dimensional electron liquid using...

Full description

Saved in:
Bibliographic Details
Published in:Nanotechnology 2013-09, Vol.24 (37), p.375201-1-8
Main Authors: Veazey, Joshua P, Cheng, Guanglei, Irvin, Patrick, Cen, Cheng, Bogorin, Daniela F, Bi, Feng, Huang, Mengchen, Bark, Chung-Wung, Ryu, Sangwoo, Cho, Kwang-Hwan, Eom, Chang-Beom, Levy, Jeremy
Format: Article
Language:English
Subjects:
Applied sciences
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Condensed matter: structure, mechanical and thermal properties
Cross-disciplinary physics: materials science
rheology
Electronics
Exact sciences and technology
Lithography
Low-dimensional structures (superlattices, quantum well structures, multilayers): structure, and nonelectronic properties
Materials science
Mesoscopic and nanoscale systems
Methods of nanofabrication
Molecular electronics, nanoelectronics
Nanoelectronics
Nanolithography
Nanomaterials
Nanostructure
Nanotechnology
Physics
Platforms
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Strontium titanates
Superconducting films and low-dimensional structures
Superconductivity
Surfaces and interfaces
thin films and whiskers (structure and nonelectronic properties)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We report quasi-1D superconductivity at the interface of LaAlO3 and SrTiO3. The material system and nanostructure fabrication method supply a new platform for superconducting nanoelectronics. Nanostructures having line widths w ∼ 10 nm are formed from the parent two-dimensional electron liquid using conductive atomic force microscope lithography. Nanowire cross-sections are small compared to the superconducting coherence length in LaAlO3/SrTiO3, placing them in the quasi-1D regime. Broad superconducting transitions versus temperature and finite resistances in the superconducting state well below Tc 200 mK are observed, suggesting the presence of fluctuation- and heating-induced resistance. The superconducting resistances and V-I characteristics are tunable through the use of a back gate. Four-terminal resistances in the superconducting state show an unusual dependence on the current path, varying by as much as an order of magnitude. This new technology, i.e., the ability to 'write' gate-tunable superconducting nanostructures on an insulating LaAlO3/SrTiO3 'canvas', opens possibilities for the development of new families of reconfigurable superconducting nanoelectronics.
ISSN:0957-4484
1361-6528
DOI:10.1088/0957-4484/24/37/375201