Chun‐Ying Huang

Ferroelectric-assisted charge-transfer plasmons in graphene/CuInP2S6

Yinming Shao, Hae-Yeon Lee, Jin Zhang, Samuel Moore et autres

Abstract Two-dimensional materials and their van der Waals heterostructures provide a versatile platform for novel optoelectronic functionalities. Interfacial charge transfer in such stacks enables high-quality graphene plasmons, but the charge-doping is fixed by work-function differences between constituent layers. Ferroelectric substrates have been …

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Macroscopic Transition Metal Dichalcogenide Monolayers from Gold-Tape Exfoliation Retain Intrinsic Properties

Nicholas Olsen, Sunggun Yoon, Madisen Holbrook, Morgan Thinel et autres

The "gold-tape" exfoliation technique can deterministically exfoliate macroscopic transition metal dichalcogenide (TMD) monolayers from bulk single crystals, overcoming limitations of the widely used "Scotch-tape" method, but concerns over the quality of the large-area monolayers remain. Here we introduce a critical step improving …

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Chemical Control of Symmetry and Bandgap in Tungsten Oxyhalide van der Waals Semiconductors

Jordan M. Cox, Willa Mihalyi‐Koch, Sophie Beck, Eric Seewald et autres

Tunability in solid-state materials is essential for testing theory, discovering quantum phases, and enabling functionality. Layered van der Waals (vdW) semiconductors offer a unique platform, providing new degrees of freedom at the two-dimensional (2D) limit through exfoliation and external controls. Here, we …

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Charge Density Wave and Ferromagnetism in Intercalated CrSBr

Margalit L. Feuer, Morgan Thinel, Xiong Huang, Zhi‐Hao Cui et autres

Abstract In materials with 1D electronic bands, electron–electron interactions can produce intriguing quantum phenomena, including spin‐charge separation and charge density waves (CDW). Most of these systems, however, are non‐magnetic, motivating a search for anisotropic materials where the coupling of charge and spin …

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Terahertz emission from giant optical rectification in a van der Waals material

Taketo Handa, Chun‐Ying Huang, Yiliu Li, Nicholas Olsen et autres

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Coupling of electronic transition to ferroelectric order in a 2D semiconductor

Chun‐Ying Huang, Daniel G. Chica, Zhi‐Hao Cui, Taketo Handa et autres

A ferroelectric material often exhibits a soft transverse optical (TO) phonon mode which governs its phase transition. Charge coupling to this ferroelectric soft mode may further mediate emergent physical properties, including superconductivity and defect tolerance in semiconductors. However, direct experimental evidence for …

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Charge Density Wave and Ferromagnetism in Intercalated CrSBr

Margalit L. Feuer, Morgan Thinel, Xiong Huang, Zhi‐Hao Cui et autres

In materials with one-dimensional electronic bands, electron-electron interactions can produce intriguing quantum phenomena, including spin-charge separation and charge density waves (CDW). Most of these systems, however, are non-magnetic, motivating a search for anisotropic materials where the coupling of charge and spin may …

A 2D van der Waals Material for Terahertz Emission with Giant Optical Rectification

Taketo Handa, Chun‐Ying Huang, Yiliu Li, Nicholas Olsen et autres

Exfoliation and stacking of two-dimensional (2D) van der Waals (vdW) crystals have created unprecedented opportunities in the discovery of quantum phases. A major obstacle to the advancement of this field is the limited spectroscopic access due to a mismatch in sample sizes …

Designing Magnetic Properties in CrSBr through Hydrostatic Pressure and Ligand Substitution (Adv. Phys. Res. 11/2023)

Evan J. Telford, Daniel G. Chica, Michael E. Ziebel, Kaichen Xie et autres

Magnetic Van Der Waals Materials Understanding how electronic and structural perturbations influence the magnetic properties of van der Waals magnets is crucial for designing and implementing next-generation spintronic applications of 2D materials. In article number 2300036, Evan J. Telford, Daniel G. Chica, …

Visualizing moiré ferroelectricity via plasmons and nano-photocurrent in graphene/twisted-WSe2 structures

Shuai Zhang, Yang Liu, Zhiyuan Sun, Xinzhong Chen et autres

Abstract Ferroelectricity, a spontaneous and reversible electric polarization, is found in certain classes of van der Waals (vdW) materials. The discovery of ferroelectricity in twisted vdW layers provides new opportunities to engineer spatially dependent electric and optical properties associated with the configuration …

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Visualizing moiré ferroelectricity via plasmons and nano-photocurrent in graphene/twisted-WSe2 structures

Shuai Zhang, Yang Liu, Zhiyuan Sun, Xinzhong Chen et autres

Ferroelectricity, a spontaneous and reversible electric polarization, is found in certain classes of van der Waals (vdW) material heterostructures. The discovery of ferroelectricity in twisted vdW layers provides new opportunities to engineer spatially dependent electric and optical properties associated with the configuration …

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Designing Magnetic Properties in CrSBr through Hydrostatic Pressure and Ligand Substitution

Evan J. Telford, Daniel G. Chica, Michael E. Ziebel, Kaichen Xie et autres

Abstract Magnetic van der Waals (vdW) materials are a promising platform for producing atomically thin spintronic and optoelectronic devices. The A‐type antiferromagnet CrSBr has emerged as a particularly exciting material due to its high magnetic ordering temperature, semiconducting electrical properties, and enhanced …

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