Observation of Two-Terminal CISS Magnetoresistance with Nonmagnetic Contacts
Bibliographic record
Abstract
High Resolution Image Download MS PowerPoint Slide Chiral materials contacted between a ferromagnet (FM) and a nonmagnet (NM) exhibit a chirality-dependent asymmetric magnetoresistance (MR) as the FM magnetization is flipped. This is considered to be a manifestation of the chirality induced spin selectivity (CISS) effect, in which chirality dependent spins generated in the medium are subsequently detected by the ferromagnetic spin detector. Here we show that this two-terminal asymmetric MR response is quite general and can arise even when an achiral medium is contacted by nonmagnetic electrodes, with no known spin detecting property. By controllably introducing chirality in the channel, we demonstrate how the chirality-dependent CISS MR manifests even for nonspin-detecting electrodes . The response, distinct from electromagnetochiral anisotropy (EMChA), remains unchanged in the standard configuration with FM/NM electrodes. Thus, observation of chirality-dependent MR in transport experiments does not necessarily relate chirality to spin, as commonly assumed in CISS literature.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".