Field-Free Superconducting Diode Effect in Layered Superconductor FeSe
Utane Nagata, Motomi Aoki, Akito Daido, Shigeru Kasahara, Yuichi Kasahara, Ryo Ohshima, Yuichiro Ando, Youichi Yanase, Yuji Matsuda, Masashi Shiraishi
DOI 10.1103/PhysRevLett.134.236703 · Physical Review Letters
Active bibliographic source — not scientific approval
Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.
Abstract
The superconducting diode effect (SDE), where zero-resistance states appear nonreciprocally during current injection, is receiving tremendous interest in both fundamental and applied physics because the SDE is a novel manifestation of symmetry breaking and enables the creation of a novel diode. In particular, magnetic-field-free SDEs have been extensively investigated because of their potential to serve as building blocks for superconducting circuit technology. In this Letter, we report the field-free SDE in a layered superconductor, FeSe. Its underlying physics is clarified by systematic controlled experiments to be an interplay of a large thermoelectric response and geometrical asymmetry in FeSe. Our findings can pave a new avenue for the construction of novel material and device platforms utilizing SDEs.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| FeSe Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 13 | Pressure not reported | midpoint |
| FeTe0.6Se0.4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| NbN Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
Similar papers
Field-free superconducting diode effect in layered superconductor FeSe
similarity 1.00Utane Nagata et al. · 2024 · arXiv:2409.01715
Source status unknown — claims are unverified
Superconductor-Insulator Quantum Phase Transition in Disordered FeSe Thin Films
similarity 0.95R. Schneider et al.
Source status unknown — claims are unverified
Discrete Superconducting Phases in FeSe-Derived Superconductors
similarity 0.95T. P. Ying et al.
Source status unknown — claims are unverified
Discrete superconducting phases in proton-intercalated FeSe thin flakes
similarity 0.94W. X. Wang et al.
Source status unknown — claims are unverified
Thermal Conductivity of the Iron-Based Superconductor FeSe: Nodeless Gap with a Strong Two-Band Character
similarity 0.94P. Bourgeois-Hope et al.
Source status unknown — claims are unverified
Evolution of High-Temperature Superconductivity from a Low-Tc Phase Tuned by Carrier Concentration in FeSe Thin Flakes
similarity 0.94B. Lei et al.
Source status unknown — claims are unverified