Conditions for Josephson Diode Effect in Spin-Polarized Materials
Published:Dec 26, 2025 12:33
•1 min read
•ArXiv
Analysis
This paper investigates the conditions required for a Josephson diode effect, a phenomenon where the current-phase relation in a Josephson junction is asymmetric, leading to a preferred direction for current flow. The focus is on junctions incorporating strongly spin-polarized magnetic materials. The authors identify four key conditions: noncoplanar spin texture, contribution from both spin bands, different band-specific densities of states, and higher harmonics in the current-phase relation. These conditions are crucial for breaking symmetries and enabling the diode effect. The paper's significance lies in its contribution to understanding and potentially engineering novel spintronic devices.
Key Takeaways
- •The paper provides a theoretical framework for understanding the Josephson diode effect in junctions with strongly spin-polarized materials.
- •Four key conditions are identified as necessary for the effect to occur.
- •The findings could be relevant for the development of new spintronic devices.
Reference
“The paper identifies four necessary conditions: noncoplanarity of the spin texture, contribution from both spin bands, different band-specific densities of states, and higher harmonics in the CPR.”