Direction and strain controlled anisotropic transport behaviors of 2D GeSe-phosphorene vdW heterojunctions
Bibliographic record
Abstract
Abstract Vertical van der Waals (vdW) heterostructures made up of two or more 2D monolayer materials provide new opportunities for 2D devices. Herein, we study the electronic transport properties of vertical integration of 2D GeSe-phosphorene(GeSe–BP) heterostructure, using the nonequilibrium Green’s function formalism combined with the density-functional theory. The results reveal that the directional dependency and strain tunable transport anisotropic behavior appears in GeSe/BP-stacking vdW heterostructures. The current–voltage ( I – V ) characteristics indicate that the electric current propagates more easily through the perpendicular buckled direction ( Y ) than the linear atomic chain direction ( X ) in the low bias regime regardless of the GeSe–BP stacking, which is supported by the underlying electronic structures along Γ– Y and Γ– X lines. The anisotropic transmission spectra indicate an over 10 5 on/off ratio between the I Y and I X in GeSe–BP systems. This anisotropic transmission behavior of 2D GeSe–BP heterojunction is regardless of the considered layer distances. The similar situation can also be found in the I – V characteristics of GeSe–BP nano-device after applying a strain, and a charming behavior that the transport gap can be minished obviously when applied a compressed strain on the perpendicular y -direction or the stretched strain on the x -direction. Moreover, an intriguing semiconductor-metal transition induces by applying the in-plain strain along the y -direction. These results imply that the GeSe–BP nanojunctions may be a promising application in futuristic nano-switching materials.
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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) | 0.001 | 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".