• 专利标题:   Josephson junction for Josephson junction device such as microwave detector, comprises superconducting bilayer comprising two misaligned layers of material and having first and second segment, and weak-link region separating segments.
  • 专利号:   US2022005998-A1, WO2022046289-A2, WO2022046289-A9, WO2022046289-A3, EP4175934-A2
  • 发明人:   BLICK R H, LAGALLY M G
  • 专利权人:   UNIV HAMBURG, WISCONSIN ALUMNI RES FOUND, WISCONSIN ALUMNI RES FOUND, UNIV HAMBURG, WISCONSIN ALUMNI RES FOUND, UNIV HAMBURG
  • 国际专利分类:   H01L039/02, H01L039/12, H01L039/22, H01P003/00, H01L000/00, C04B000/00, H01L027/18, C07C013/04, C07C255/09
  • 专利详细信息:   US2022005998-A1 06 Jan 2022 H01L-039/02 202215 English
  • 申请详细信息:   US2022005998-A1 US366195 02 Jul 2021
  • 优先权号:   US047948P, US366195

▎ 摘  要

NOVELTY - Josephson junction comprises a superconducting bilayer comprising two azimuthally misaligned layers of a two-dimensional material and having a first 202 and second segment 204, and a weak-link region 206 separating the first segment from the second segment, where the weak-link region has an enhanced concentration of lattice defects relative to the first segment and second segment and is an integral part of the superconducting bilayer. USE - Josephson junction for use in Josephson junction device such as microwave detector (all claimed). ADVANTAGE - The Josephson junction has desired tunability. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: 1. a Josephson junction device, which comprises the Josephson junction, a first electrode in electrical communication with the first segment, a second electrode in electrical communication with the second segment, a gate dielectric underlying the Josephson junction and a back-gate electrode 210underlying the gate dielectric; and 2. a microwave detector, which comprises the Josephson junction device, a microwave source configured to direct microwave photons onto the weak-link region and a voltage detector configured to measure the voltage across the weak-link region of the Josephson junction. DESCRIPTION OF DRAWING(S) - The drawing shows schematic view of twisted-bilayer graphene Josephson junction incorporated into a microwave circuit. Twisted-bilayer graphene Josephson junction (200) First segment (202) Second segment (204) Weak-link region (206) Back-gate electrode (210)