Coulomb Blockade and Possible Luttinger Liquid Behaviors in Encapsulated High-Mobility Graphene Nanoribbons.

IF 9.6 1区材料科学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Nano Letters Pub Date : 2025-05-20 DOI:10.1021/acs.nanolett.4c06064

Peiyue Shen,Bosai Lyu,Zhenghan Wu,Liguo Wang,Zhichun Zhang,Xianliang Zhou,Shuo Lou,Jiajun Chen,Saiqun Ma,Yufeng Xie,Yi Chen,Kunqi Xu,Kenji Watanabe,Takashi Taniguchi,Guohua Wang,Dong Qian,Qi Liang,Wei Yang,Guangyu Zhang,Zhiwen Shi

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引用次数: 0

Abstract

Graphene nanoribbons (GNRs) are highly promising for exploring one-dimensional (1D) correlation physics and constructing digital logic circuits. Here, we report the intrinsic electrical transport behaviors of GNR field-effect transistors (FETs) fabricated using GNRs in situ encapsulated by hexagonal boron nitride (hBN) flakes. The FET devices exhibit excellent performance at room temperature: mobility up to ∼5000 cm2 V-1 s-1, on/off ratio up to ∼106, and subthreshold swing down to ∼70 mV dec-1. The devices exhibit periodic conductance peaks and regular Coulomb diamonds due to strong electron-electron repulsion at cryogenic temperatures. Additionally, conductance of the GNR devices exhibits power-law dependence and universal scaling, signatures of Luttinger liquid behaviors, with a tunable Luttinger parameter g ranging from 0.1 to 0.3. Our study demonstrates that the in situ encapsulated GNRs can function as both high-performance FET devices and strongly interacting 1D quantum systems, providing an ideal platform for studying 1D transport and correlated physics.

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封装高迁移率石墨烯纳米带中的库仑阻塞和可能的Luttinger液体行为。

石墨烯纳米带在探索一维（1D）相关物理和构建数字逻辑电路方面具有很大的应用前景。本文报道了用六方氮化硼（hBN）片封装GNR原位制备的GNR场效应晶体管（fet）的本征电输运行为。FET器件在室温下表现出优异的性能：迁移率高达~ 5000 cm2 V-1 s-1，开/关比高达~ 106，亚阈值摆幅降至~ 70 mV dec1。在低温下，由于强烈的电子-电子斥力，器件表现出周期性的电导峰和规则的库仑钻石。此外，GNR器件的电导表现出幂律依赖性和普遍标度性，是Luttinger液体行为的特征，Luttinger参数g在0.1到0.3之间可调。我们的研究表明，原位封装的gnr既可以作为高性能场效应管器件，又可以作为强相互作用的一维量子系统，为研究一维输运和相关物理提供了理想的平台。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nano Letters 工程技术-材料科学：综合

CiteScore

16.80

自引率

2.80%

发文量

1182

审稿时长

1.4 months

期刊介绍： Nano Letters serves as a dynamic platform for promptly disseminating original results in fundamental, applied, and emerging research across all facets of nanoscience and nanotechnology. A pivotal criterion for inclusion within Nano Letters is the convergence of at least two different areas or disciplines, ensuring a rich interdisciplinary scope. The journal is dedicated to fostering exploration in diverse areas, including: - Experimental and theoretical findings on physical, chemical, and biological phenomena at the nanoscale - Synthesis, characterization, and processing of organic, inorganic, polymer, and hybrid nanomaterials through physical, chemical, and biological methodologies - Modeling and simulation of synthetic, assembly, and interaction processes - Realization of integrated nanostructures and nano-engineered devices exhibiting advanced performance - Applications of nanoscale materials in living and environmental systems Nano Letters is committed to advancing and showcasing groundbreaking research that intersects various domains, fostering innovation and collaboration in the ever-evolving field of nanoscience and nanotechnology.