Van der Waals Nanowires with Continuously Variable Interlayer Twist and Twist Homojunctions
Abstract
Abstract Moiré patterns at van der Waals interfaces between twisted 2D crystals give rise to distinct optoelectronic excitations, as well as, narrowly dispersive bands responsible for correlated electron phenomena. Contrasting with the conventional, mechanically stacked planar twist moirés, recent work shows twisted van der Waals interfaces spontaneously formed in nanowires of layered crystals, where Eshelby twist due to axial screw dislocations stabilizes a chiral structure with small interlayer rotation. Here, the realization of tunable twist in germanium(II) sulfide (GeS) van der Waals nanowires is reported. Tapered nanowires host continuously variable interlayer twist. Homojunctions between dislocated (chiral) and defect‐free (achiral) segments are obtained by triggering the emission of axial dislocations during growth. Measurements across such junctions, implemented here using local absorption and luminescence spectroscopy, provide a convenient tool for detecting twist effects. The results identify a versatile system for 3D twistronics, probing moiré physics, and for realizing moiré architectures without equivalent in planar systems.
- Authors:
-
[1];
- Department of Electrical &, Computer Engineering University of Nebraska‐Lincoln Lincoln NE 68588 USA
- Center for Nanophase Materials Sciences Oak Ridge National Laboratory Oak Ridge TN 37831 USA
- Department of Mechanical &, Materials Engineering University of Nebraska‐Lincoln Lincoln NE 68588 USA
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1804227
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Advanced Functional Materials
- Additional Journal Information:
- Journal Name: Advanced Functional Materials Journal Volume: 31 Journal Issue: 9; Journal ID: ISSN 1616-301X
- Publisher:
- Wiley Blackwell (John Wiley & Sons)
- Country of Publication:
- Germany
- Language:
- English
Citation Formats
Sutter, Peter, Idrobo, Juan‐Carlos, and Sutter, Eli. Van der Waals Nanowires with Continuously Variable Interlayer Twist and Twist Homojunctions. Germany: N. p., 2020.
Web. doi:10.1002/adfm.202006412.
Sutter, Peter, Idrobo, Juan‐Carlos, & Sutter, Eli. Van der Waals Nanowires with Continuously Variable Interlayer Twist and Twist Homojunctions. Germany. https://doi.org/10.1002/adfm.202006412
Sutter, Peter, Idrobo, Juan‐Carlos, and Sutter, Eli. Thu .
"Van der Waals Nanowires with Continuously Variable Interlayer Twist and Twist Homojunctions". Germany. https://doi.org/10.1002/adfm.202006412.
@article{osti_1804227,
title = {Van der Waals Nanowires with Continuously Variable Interlayer Twist and Twist Homojunctions},
author = {Sutter, Peter and Idrobo, Juan‐Carlos and Sutter, Eli},
abstractNote = {Abstract Moiré patterns at van der Waals interfaces between twisted 2D crystals give rise to distinct optoelectronic excitations, as well as, narrowly dispersive bands responsible for correlated electron phenomena. Contrasting with the conventional, mechanically stacked planar twist moirés, recent work shows twisted van der Waals interfaces spontaneously formed in nanowires of layered crystals, where Eshelby twist due to axial screw dislocations stabilizes a chiral structure with small interlayer rotation. Here, the realization of tunable twist in germanium(II) sulfide (GeS) van der Waals nanowires is reported. Tapered nanowires host continuously variable interlayer twist. Homojunctions between dislocated (chiral) and defect‐free (achiral) segments are obtained by triggering the emission of axial dislocations during growth. Measurements across such junctions, implemented here using local absorption and luminescence spectroscopy, provide a convenient tool for detecting twist effects. The results identify a versatile system for 3D twistronics, probing moiré physics, and for realizing moiré architectures without equivalent in planar systems.},
doi = {10.1002/adfm.202006412},
journal = {Advanced Functional Materials},
number = 9,
volume = 31,
place = {Germany},
year = {Thu Dec 03 00:00:00 EST 2020},
month = {Thu Dec 03 00:00:00 EST 2020}
}
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