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Spin Vortex Crystal Order in Organic Triangular Lattice Compound

2021· article· en· W3171616870 on OpenAlexfundno aff
Kira Riedl, Elena Gati, David Zielke, Steffi Hartmann, O. M. Vyaselev, N.D. Kushch, Harald O. Jeschke, Michael Lang, Roser Valentí, M. V. Kartsovnı̆k, Stephen M. Winter

Bibliographic record

VenuePhysical Review Letters · 2021
Typearticle
Languageen
FieldMaterials Science
TopicOrganic and Molecular Conductors Research
Canadian institutionsnot available
FundersNatural Sciences and Engineering Research Council of CanadaRussian Foundation for Basic ResearchDeutsche Forschungsgemeinschaft
KeywordsCondensed matter physicsSpin (aerodynamics)VortexHexagonal latticeOrder (exchange)Crystal structureMaterials scienceQuantum spin liquidLattice (music)Ab initio quantum chemistry methodsAb initioRing (chemistry)Chemical physicsCrystallographyPhysicsChemistryAntiferromagnetismThermodynamicsSpin polarizationOrganic chemistryQuantum mechanicsMolecule

Abstract

fetched live from OpenAlex

Organic salts represent an ideal experimental playground for studying the interplay between magnetic and charge degrees of freedom, which has culminated in the discovery of several spin-liquid candidates such as $\ensuremath{\kappa}\text{\ensuremath{-}}(\mathrm{ET}{)}_{2}{\mathrm{Cu}}_{2}(\mathrm{CN}{)}_{3}$ ($\ensuremath{\kappa}\text{\ensuremath{-}}\mathrm{Cu}$). Recent theoretical studies indicate the possibility of chiral spin liquids stabilized by ring exchange, but the parent states with chiral magnetic order have not been observed in this material family. In this Letter, we discuss the properties of the recently synthesized $\ensuremath{\kappa}\text{\ensuremath{-}}(\mathrm{BETS}{)}_{2}\mathrm{Mn}[\mathrm{N}(\mathrm{CN}{)}_{2}{]}_{3}$ ($\ensuremath{\kappa}\text{\ensuremath{-}}\mathrm{Mn}$). Based on analysis of specific heat, magnetic torque, and NMR measurements combined with ab initio calculations, we identify a spin-vortex crystal order. These observations definitively confirm the importance of ring exchange in these materials and support the proposed chiral spin-liquid scenario for triangular lattice organics.

Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.

How this classification was reachedexpand

Full frame distilled prediction

Teacher imitation

Not 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.

metaresearch head score (Codex)0.000
metaresearch head score (Gemma)0.000
Version: codex-gemma-dda1882f352aValidation status: machine_predicted_unvalidated
Candidate categoriesInsufficient payload (model declined to judge)
Consensus categoriesInsufficient payload (model declined to judge)
DomainCandidate signal: none · Consensus signal: none
Study designCandidate signal: Bench or experimental · Consensus signal: Bench or experimental
GenreCandidate signal: Empirical · Consensus signal: Empirical
Teacher disagreement score0.188
Threshold uncertainty score1.000

Codex and Gemma teacher scores by category

CategoryCodexGemma
Metaresearch0.0000.000
Meta-epidemiology (narrow)0.0000.000
Meta-epidemiology (broad)0.0000.000
Bibliometrics0.0000.001
Science and technology studies0.0000.000
Scholarly communication0.0000.000
Open science0.0000.000
Research integrity0.0000.000
Insufficient payload (model declined to judge)0.0030.001

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.

Opus teacher head0.026
GPT teacher head0.324
Teacher spread0.298 · how far apart the two teachers sit on this one work
Validation statusscore_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it

Classification

machine, unvalidated

Machine predicted; both teacher heads agree on what is shown here.

Study designBench or experimental
Domainnot available
GenreEmpirical

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".

Quick stats

Citations11
Published2021
Admission routes1
Has abstractyes

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