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 distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| 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 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 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 teacher head, 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".