[HTML][HTML] Ferromagnetic materials for Josephson π junctions

NO Birge, N Satchell - APL Materials, 2024 - pubs.aip.org
The past two decades have seen an explosion of work on Josephson junctions containing
ferromagnetic materials. Such junctions are under consideration for applications in digital …

Enhancing the Josephson diode effect with Majorana bound states

J Cayao, N Nagaosa, Y Tanaka - Physical Review B, 2024 - APS
We consider phase-biased Josephson junctions with spin-orbit coupling under external
magnetic fields and study the emergence of the Josephson diode effect in the presence of …

Nonsinusoidal current-phase relations in semiconductor–superconductor–ferromagnetic insulator devices

A Maiani, K Flensberg, M Leijnse, C Schrade… - Physical Review B, 2023 - APS
Coherent tunneling processes of multiple Cooper pairs across a Josephson junction give
rise to high harmonics in the current phase relation. In this work, we propose and study …

Semiconductor-ferromagnet-superconductor planar heterostructures for 1D topological superconductivity

SD Escribano, A Maiani, M Leijnse, K Flensberg… - npj quantum …, 2022 - nature.com
Hybrid structures of semiconducting (SM) nanowires, epitaxially grown superconductors
(SC), and ferromagnetic-insulator (FI) layers have been explored experimentally and …

Non-Hermitian phase-biased Josephson junctions

J Cayao, M Sato - Physical Review B, 2024 - APS
We study non-Hermitian Josephson junctions formed by superconductors with a finite phase
difference under non-Hermiticity, which naturally appears due to coupling to normal …

Nanoscale spin ordering and spin screening effects in tunnel ferromagnetic Josephson junctions

R Satariano, AF Volkov, HG Ahmad… - Communications …, 2024 - nature.com
Abstract Magnetic Josephson junctions (MJJs) have emerged as a prominent playground to
explore the interplay between superconductivity and ferromagnetism. A series of fascinating …

Superconducting flux qubit with ferromagnetic Josephson π-junction operating at zero magnetic field

S Kim, LV Abdurakhimov, D Pham, W Qiu… - Communications …, 2024 - nature.com
Conventional superconducting flux qubits require the application of a precisely tuned
magnetic field to set the operation point at half a flux quantum through the qubit loop, which …

Josephson Junction Transition Induced by Orbital Hybridization in a Double Quantum Dot

R Debbarma, A Tsintzis, M Aspegren, RS Souto… - Physical Review Letters, 2023 - APS
In this Letter, we manipulate the phase shift of a Josephson junction using a parallel double
quantum dot (QD). By employing a superconducting quantum interference device, we …

Dissipationless nonlinearity in quantum material Josephson diodes

C Schrade, V Fatemi - Physical Review Applied, 2024 - APS
Dissipationless nonlinearities for three-wave mixing are a key component of many
superconducting quantum devices, such as amplifiers and bosonic qubits. So far, such third …

Bulk Bogoliubov Fermi arcs in non-Hermitian superconducting systems

J Cayao, AM Black-Schaffer - Physical Review B, 2023 - APS
We consider a non-Hermitian superconducting system by coupling a conventional
superconductor to a ferromagnet lead and demonstrate the emergence of exceptional points …