Journal
NATURE PHYSICS
Volume 14, Issue 11, Pages 1138-+Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/s41567-018-0259-9
Keywords
-
Categories
Funding
- Microsoft Station Q
- Danish National Research Foundation
- Villum Foundation
- Marie Curie Fellowship [659653]
- Marie Curie Actions (MSCA) [659653] Funding Source: Marie Curie Actions (MSCA)
Ask authors/readers for more resources
The superconductor-insulator transition in two dimensions has been widely investigated as a paradigmatic quantum phase transition. The topic remains controversial because many experiments exhibit a metallic regime with saturating low-temperature resistance, which is at odds with conventional theory. Here, we explore this transition in a highly controllable system, a semiconductor heterostructure with epitaxial aluminium, patterned to form a regular array of superconducting islands connected by a gateable quantum well. Spanning nine orders of magnitude in resistance, the system exhibits regimes of superconducting, metallic and insulating behaviour, along with signatures of flux commensurability and vortex penetration. An in-plane magnetic field eliminates the metallic regime, restoring the direct superconductor-insulator transition; it also improves the scaling behaviour while strongly altering the scaling exponent.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available