Josephson effects in twisted cuprate bilayers

T Tummuru, S Plugge, M Franz - Physical Review B, 2022 - APS
Twisted bilayers of high-T c cuprate superconductors have been argued to form topological
phases with spontaneously broken time reversal symmetry T for certain twist angles. A key …

Half-integer Shapiro steps in highly transmissive InSb nanoflag Josephson junctions

A Iorio, A Crippa, B Turini, S Salimian, M Carrega… - Physical Review …, 2023 - APS
We investigate a ballistic InSb nanoflag-based Josephson junction with Nb superconducting
contacts. The high transparency of the superconductor-semiconductor interfaces enables …

Microwave-tunable diode effect in asymmetric SQUIDs with topological Josephson junctions

JJ Cuozzo, W Pan, J Shabani, E Rossi - Physical Review Research, 2024 - APS
In superconducting systems in which inversion and time-reversal symmetry are
simultaneously broken the critical current for positive and negative current bias can be …

Multiterminal inverse AC Josephson effect

EG Arnault, TFQ Larson, A Seredinski, L Zhao… - Nano …, 2021 - ACS Publications
When a Josephson junction is exposed to microwave radiation, it undergoes the inverse AC
Josephson effect─ the phase of the junction locks to the drive frequency. As a result, the I–V …

[HTML][HTML] Supercurrent in Bi4Te3 Topological Material-Based Three-Terminal Junctions

J Kölzer, AR Jalil, D Rosenbach, L Arndt, G Mussler… - Nanomaterials, 2023 - mdpi.com
In this paper, in an in situ prepared three-terminal Josephson junction based on the
topological insulator Bi 4 Te 3 and the superconductor Nb the transport properties are …

Evolution of 4π-Periodic Supercurrent in the Presence of an In-Plane Magnetic Field

BH Elfeky, JJ Cuozzo, N Lotfizadeh, WF Schiela… - ACS …, 2023 - ACS Publications
In the presence of a 4π-periodic contribution to the current phase relation, for example in
topological Josephson junctions, odd Shapiro steps are expected to be missing. While …

Fractional Shapiro steps in resistively shunted Josephson junctions as a fingerprint of a skewed current-phase relationship

B Raes, N Tubsrinuan, R Sreedhar, DS Guala… - Physical Review B, 2020 - APS
We study numerically the fractional Shapiro step response in low-frequency driven
Josephson junctions which have a nonsinusoidal current-phase relation. We perform this …

Observation of half-integer Shapiro steps in graphene Josephson junctions

Z Huang, BH Elfeky, T Taniguchi, K Watanabe… - Applied Physics …, 2023 - pubs.aip.org
We study quantum transport and AC Josephson effect of hexagonal boron nitride
encapsulated graphene (BGB) Josephson junctions (JJs). Our experiments reveal the …

Ballistic surface channels in fully in situ defined BiTe Josephson junctions with aluminum contacts

D Rosenbach, AR Jalil, TW Schmitt… - arXiv preprint arXiv …, 2023 - arxiv.org
In this letter we report on the electrical transport properties of Bi $ _4 $ Te $ _3 $ in a
Josephson junction geometry using superconducting Al electrodes with a Ti interdiffusion …

Nonreciprocal microwave responses in Nb/Au/NbSe2 Josephson junctions

W Tian, H Zhang, D Zhang, W Shao - Applied Physics Letters, 2023 - pubs.aip.org
The nonreciprocal Josephson junction, the Josephson diode, opens a door for
superconducting circuit technology. Here, we report on nonreciprocal behaviors in …