Sturdy spin-momentum locking in a chiral organic superconductor
Takuro Sato, Hiroshi Goto, Hiroshi M. Yamamoto
DOI 10.1103/PhysRevResearch.7.023056 · Physical Review Research
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
Among noncentrosymmetric structures, chirality has recently been recognized as a novel source of asymmetrical charge/spin transports as exemplified by electrical magnetochiral anisotropy (EMChA) and chirality-induced spin selectivity. Although similar bulk-charge rectification and the Rashba-Edelstein effect in polar systems are quantitively reproducible by theory based on the electronic band structures, the relevance of band parameters in chiral effects remains elusive. Here, by working with a chiral organic superconductor, we experimentally demonstrate a gigantic EMChA and large superconducting diode effect, both of which are difficult to be explained solely by its band parameters. A two-critical-current signature and an enhanced critical field suggested triplet-mixed Cooper pairs with anomalously enhanced spin-orbit coupling above atomic limit. Our results clearly highlight a unique spin-momentum locking with large stiffness beyond the expectation, suggesting an unknown driving force for spin polarization inherent to chirality.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| κ-(BEDT-TTF)2Cu(NCS)2 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 8.7 | Pressure not reported | midpoint |
Similar papers
Low-temperature microwave surface impedance of the conventional organic superconductor κ-(BEDT-TTF)2Cu(NCS)2
similarity 0.95M. Dressel et al.
Source status unknown — claims are unverified
Fluctuating superconductivity in the strongly correlated two-dimensional organic superconductor κ-(BEDT-TTF)2Cu(NCS)2 in an in-plane magnetic field
similarity 0.95Satoshi Tsuchiya et al.
Source status unknown — claims are unverified
NMR study of the vortex slush phase in organic superconductor κ−(BEDT−TTF)2Cu(NCS)2
similarity 0.95M. Urano et al.
Source status unknown — claims are unverified
Mixed pairing symmetry in κ−(BEDT-TTF)2X organic superconductors from ultrasonic velocity measurements
similarity 0.95Maxime Dion et al.
Source status unknown — claims are unverified
Tunneling spectroscopy on the organic superconductor κ−(BEDT−TTF)2Cu(NCS)2 using STM
similarity 0.95T. Arai et al.
Source status unknown — claims are unverified
Antiferromagnetic Fluctuations in the Organic Superconductor κ−(BEDT−TTF)2Cu(NCS)2 under Pressure
similarity 0.94Megumi Itaya et al.
Source status unknown — claims are unverified