High-transition-temperature nanoscale superconducting quantum interference devices directly written with a focused helium ion beam
Abstract
In this work, we present nanoscale superconducting quantum interference devices (SQUIDs) with dimensions as small as 10 nm from the high-transition-temperature superconductor YBa2Cu3O7−δ (YBCO). The SQUID features and Josephson junctions are directly written into a 35-nm thick YBCO film with a focused helium ion beam. We integrate these nano-SQUIDs with directly written nano-isolated inductively coupled control lines to demonstrate a low power superconducting output driver capable of transimpedance conversion over a very wide temperature range of 4–50 K.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Feb 18, 2020
- Source ID
- 10.1063/1.5143026
Entities
People
- Ethan Y Cho
- Han Cai
- Hao Li
- Jay C LeFebvre
- Shane A Cybart
- Stephen J. Mccoy
- Yan-Ting Wang
- Yuchao W Zhou
Organizations
- Air Force Office of Scientific Research
- Army Research Office
- National Science Foundation
- University of California
- University of California Office of the President