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Record W2060815400 · doi:10.1103/physrevb.77.115305

Metal-organic-silicon nanoscale contacts

2008· article· en· W2060815400 on OpenAlex
Adam J. Dickie, Robert A. Wolkow

Why this work is in the frame

A frame that forgets how it found something cannot be audited. These are the routes that admitted this work.

affAt least one author lists a Canadian institution in the pinned OpenAlex snapshot.

Bibliographic record

VenuePhysical Review B · 2008
Typearticle
Languageen
FieldPhysics and Astronomy
TopicSemiconductor materials and interfaces
Canadian institutionsNational Research Council CanadaNational Institute for NanotechnologyUniversity of Alberta
Fundersnot available
KeywordsOverlayerMaterials scienceScanning tunneling microscopeSiliconOhmic contactQuantum tunnellingOptoelectronicsConductive atomic force microscopyDopingNanotechnologyCondensed matter physicsAtomic force microscopyLayer (electronics)Physics

Abstract

fetched live from OpenAlex

A scanning tunneling microscope tip is used to create nanoscale contacts on degenerately doped ${n}^{+}\text{\ensuremath{-}}\mathrm{Si}(100)$ surfaces. Current-voltage spectra are recorded as the tip transitions from tunneling to point contact on surfaces prepared in three ways: (1) the clean $2\ifmmode\times\else\texttimes\fi{}1$ surface, (2) with a covalently bonded benzene overlayer, and (3) through nanoscale clean silicon windows formed within the benzene film. Contacts to the clean surface are more Ohmic than rectifying and show a surface leakage current that arises from partially occupied ${\ensuremath{\pi}}^{*}$ states. Contacts to the benzene surface do not display a surface current and exhibit significant current rectification. The unpinning of the Si band structure by the organic adsorbate leads to inversion and a limiting minority-carrier tunnel current under reverse bias. Contacts to the windows simulate defects to an overlayer and reveal characteristics of a hybrid junction. Current-voltage spectra through the windows are free of surface leakage and are independent of the cleaned area. The return of majority carrier tunneling under reverse bias demonstrates that the pinning states of the clean substrate are restored to the windows. However, the charge distribution on the windows is significantly different from the clean surface because the restored surface states are isolated within the benzene monolayer.

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.

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 score0.092
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
Bibliometrics0.0000.000
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 head0.286
Teacher spread0.260 · 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