A Polymorphic Memtransistor with Tunable Metallic and Semiconducting Channel

Eshete, Yonas Assefa; Hwang, E. Shelley; Kim, Junhyung; Nguyen, Phuong Lien; Yu, Woo Jong; Kong, Bai-Sun; Jang, Min Seok; Lee, Jaekwang; Cho, Suyeon; Yang, Heejun

doi:10.1002/adma.202209089

Cited by 8 publications

(12 citation statements)

References 34 publications

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“…While the x = 1 case (i.e., WTe 2 case) exhibits the T d phase, pristine MoTe 2 can have two distinct states at room temperature: hexagonal (semiconducting) 2H and monoclinic (metallic) 1T′. Accordingly, the rich phases in Mo 1– x W x Te 2 enable an appealing way to achieve atomically thin functional materials (Figure c,d) . In addition, we note that composition control has been recently used to realize ferroelectricity …”

Section: Large-scale Phase Engineering Of 2d Materialsmentioning

confidence: 92%

Section: Large-scale Phase Engineering Of 2d Materialsmentioning

confidence: 99%

“…In particular, MoTe 2 exhibits relatively easier phase modulation by charge accumulation, as experimentally shown in Figure f,g. Moreover, alloying certain TMDs can reduce the potential barriers even further for phase transition, requiring less carriers for the phase transition, which is promising with evolving gating techniques. ,− …”

Section: Local Phase Patterning and Phase Interfacesmentioning

confidence: 99%

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Phase Engineering of 2D Materials

Kim,

Pandey,

Jeong

et al. 2023

Chem. Rev.

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Polymorphic 2D materials allow structural and electronic phase engineering, which can be used to realize energy-efficient, cost-effective, and scalable device applications. The phase engineering covers not only conventional structural and metal−insulator transitions but also magnetic states, strongly correlated band structures, and topological phases in rich 2D materials. The methods used for the local phase engineering of 2D materials include various optical, geometrical, and chemical processes as well as traditional thermodynamic approaches. In this Review, we survey the precise manipulation of local phases and phase patterning of 2D materials, particularly with ideal and versatile phase interfaces for electronic and energy device applications. Polymorphic 2D materials and diverse quantum materials with their layered, vertical, and lateral geometries are discussed with an emphasis on the role and use of their phase interfaces. Various phase interfaces have demonstrated superior and unique performance in electronic and energy devices. The phase patterning leads to novel homo-and heterojunction structures of 2D materials with low-dimensional phase boundaries, which highlights their potential for technological breakthroughs in future electronic, quantum, and energy devices. Accordingly, we encourage researchers to investigate and exploit phase patterning in emerging 2D materials.

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Section: Large-scale Phase Engineering Of 2d Materialsmentioning

confidence: 92%

Section: Large-scale Phase Engineering Of 2d Materialsmentioning

confidence: 99%

Section: Local Phase Patterning and Phase Interfacesmentioning

confidence: 99%

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Phase Engineering of 2D Materials

Kim,

Pandey,

Jeong

et al. 2023

Chem. Rev.

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“…[7][8][9] In addition, nonlinear and temporal response of memristors to external stimuli enables cognitive sensing/leaning capability in robotic systems, which eventually implements high-speed and low-powered robotic operation over traditional digital computing platforms. [10][11][12][13][14] Particularly, memtransistors (memristors with a three-terminal transistor structure [15][16][17][18][19] ) have garnered significant attention due to their distinct advantages over conventional memristors. One particular noteworthy advantage of memtransistors is their improved reliability.…”

Section: Introductionmentioning

confidence: 99%

“…Particularly, memtransistors (memristors with a three-terminal transistor structure 15–19 ) have garnered significant attention due to their distinct advantages over conventional memristors. One particular noteworthy advantage of memtransistors is their improved reliability.…”

Section: Introductionmentioning

confidence: 99%

A self-tuning PID controller based on analog–digital hybrid computing with a double-gate SnS₂ memtransistor

Tarar¹,

Khan²,

Kim³

et al. 2023

Nanoscale

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Polymorphic Kondo Effects Driven by Spin Lattice Coupling in VTe₂

Won,

Kiem,

Cho

et al. 2024

Adv Funct Materials

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Polymorphism in transition metal dichalcogenides (TMDs) allows unique physical properties to be controlled, such as artificial heavy fermion phenomena, the quantum spin Hall effect, and optimized device operations with 2D materials. Besides lattice structural and metal‐semiconductor polymorphs, intriguing charge density wave (CDW) states with different electronic and magnetic phases are demonstrated in TMDs. Typically, the “normal” state is stabilized at high temperature above the CDW energy scale, and therefore, is not relevant to many low‐temperature quantum phenomena, such as magnetic ordering and the heavy fermion Kondo state. Here, a local and robust phase manipulation of the normal (1T) and CDW (1T’) states of VTe2 is reported by laser irradiation, and polymorphic Kondo effects are demonstrated with the two phases at low temperatures. The theoretical calculations show that Kondo screening of vanadium 3d electron moments is markedly enhanced in 1T’‐VTe2, which is responsible for the observed transport properties distinct from its 1T counterpart. Controlling the spin‐lattice coupling and Kondo physics via laser‐driven CDW phase patterning allows the design of correlated electronic and magnetic properties in TMDs.

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A Polymorphic Memtransistor with Tunable Metallic and Semiconducting Channel

Cited by 8 publications

References 34 publications

Phase Engineering of 2D Materials

Phase Engineering of 2D Materials

A self-tuning PID controller based on analog–digital hybrid computing with a double-gate SnS₂ memtransistor

Polymorphic Kondo Effects Driven by Spin Lattice Coupling in VTe₂

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A Polymorphic Memtransistor with Tunable Metallic and Semiconducting Channel

Cited by 8 publications

References 34 publications

Phase Engineering of 2D Materials

Phase Engineering of 2D Materials

A self-tuning PID controller based on analog–digital hybrid computing with a double-gate SnS2 memtransistor

Polymorphic Kondo Effects Driven by Spin Lattice Coupling in VTe2

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A self-tuning PID controller based on analog–digital hybrid computing with a double-gate SnS₂ memtransistor

Polymorphic Kondo Effects Driven by Spin Lattice Coupling in VTe₂