Possible Luttinger liquid behavior of edge transport in monolayer transition metal dichalcogenide crystals

Yang, Guanhua; Shao, Yan; Niu, Jiebin; Ma, Xiaolei; Lu, Congyan; Wei, Wei; Chuai, Xichen; Wang, Jiawei; Cao, Jingchen; Huang, Hao; Xu, Guangwei; Shi, Xuewen; Ji, Zhuoyu; Lu, Nianduan; Geng, Di; Qi, Jing; Cao, Yun; Liu, Zhong-Liu; Liu, Liwei; Huang, Yuan; Liao, Lei; Dang, Weiqi; Zhang, Zhengwei; Liu, Yuan; Duan, Xidong; Chen, Jiezhi; Fan, Zhi‐Qiang; Jiang, Xiangwei; Wang, Yeliang; Li, Ling; Gao, Hongjun; Duan, Xiangfeng; Liu, Ming

doi:10.1038/s41467-020-14383-0

Cited by 30 publications

(16 citation statements)

References 36 publications

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“…systems, including metallic carbon nanotubes [15][16][17] , nanowires 18 , and edge states in 2D systems, have been reported as LLs and show good agreement with theory 19,20 . Although isolated polymer chains have quasi-1D structures, their films are usually in condensed 2D or 3D forms, and these undoubtedly raised questions on whether the conducting polymer could be treated as collections of pure 1D LL systems without considering their detailed condensed forms on the molecular scale.…”

Section: Introductionsupporting

confidence: 55%

A tied Fermi liquid to Luttinger liquid model for the explanation of nonlinear transport in conducting polymers

Wang

Niu

Shao

et al. 2020

Preprint

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Organic conjugated polymers demonstrate great potential in the transistor, solar cell and light-emitting diodes. The performances of those devices are fundamentally governed by charge transport within the active materials. However, the morphology-property relationships and the underpinning charge transport mechanism in polymers remain unclear. Particularly, whether the nonlinear charge transport in doped conducting polymers, i.e., anomalous non-Ohmic behaviors at low temperature, is appropriately formulated within non-Fermi liquid picture is not clear. In this work, via varying crystalline degrees of samples, we carried out systematic investigations on the charge transport nonlinearity in conducting polymers. Possible charge carriers’ dimensionality was discussed with experiments when varying the molecular chain’s crystalline orders. A heterogeneous-resistive-network (HRN) model was proposed based on the tied link between Fermi liquids (FL) and Luttinger liquids (LL), related to the high-ordered crystalline zones and weak-coupled amorphous regions, respectively. This mesoscopic HRN model is experimentally supported by precise electrical and microstructural characterizations, together with theoretic evaluations. Significantly, such model well describes the nonlinear transport behaviors in conducting polymers universally and provides new insights into the microstructure-correlated charge transport in organic conducting/semiconducting systems.

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Section: Introductionsupporting

confidence: 55%

A tied Fermi liquid to Luttinger liquid model for the explanation of nonlinear transport in conducting polymers

Wang

Niu

Shao

et al. 2020

Preprint

Self Cite

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“…However, LL theory usually relates to strict onedimensional (1D) systems with strong electron correlation, and its nonlinear current-voltage (I-V) behaviors usually stem from the power-law type density of states (DOS) near the Fermi level. Several pure 1D systems, including metallic carbon nanotubes [16][17][18] , nanowires 19 , and edge states in 2D systems, have been reported as LLs and show good agreement with theory 20,21 . Although isolated polymer chains have quasi-1D structures, their films are usually in condensed 2D or 3D forms, and these undoubtedly raised questions on whether the conducting polymer could be treated as collections of pure 1D LL systems without considering their detailed condensed forms on the molecular scale.…”

mentioning

confidence: 57%

A tied Fermi liquid to Luttinger liquid model for nonlinear transport in conducting polymers

et al. 2021

Self Cite

View full text Add to dashboard Cite

Organic conjugated polymers demonstrate great potential in transistors, solar cells and light-emitting diodes, whose performances are fundamentally governed by charge transport. However, the morphology–property relationships and the underpinning charge transport mechanisms remain unclear. Particularly, whether the nonlinear charge transport in conducting polymers is appropriately formulated within non-Fermi liquids is not clear. In this work, via varying crystalline degrees of samples, we carry out systematic investigations on the charge transport nonlinearity in conducting polymers. Possible charge carriers’ dimensionality is discussed when varying the molecular chain’s crystalline orders. A heterogeneous-resistive-network (HRN) model is proposed based on the tied-link between Fermi liquids (FL) and Luttinger liquids (LL), related to the high-ordered crystalline zones and weak-coupled amorphous regions, respectively. The HRN model is supported by precise electrical and microstructural characterizations, together with theoretic evaluations, which well describes the nonlinear transport behaviors and provides new insights into the microstructure-correlated charge transport in organic solids.

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“…These results were corroborated by DFTcalculations were up to two intrinsic metallic edge states were found, associated with subtle changes in the electronic structure close to the edge. A subsequent study [49] demonstrated that the edge transport plays a dominant role over bulk transport at low temperatures down to 6.3K. Other work [17] investigated the conducting properties of atomically thin layers of MoS 2 tuned by gate voltages.…”

Section: Summary and Discussionmentioning

confidence: 99%

Zero temperature superconductor - edge metal - insulator transition in $2D$ bosonic systems

Haugen,

Sudbø

2022

Preprint

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Motivated by the recent experimental observation of an intermediate bosonic metallic state in the two-dimensional superconductor-insulator transition at T = 0, we study an extended Bose Hubbard model in the limit of large number of particles per site. Using a representation of this in terms of two coupled XY models, we find, in addition to an insulating phase and a (2+ 1)D superfluid phase, two other phases. One phase is a 2D superfluid phase where a crossover from (2 + 1)D to 2D has taken place as a result of incipient charge ordering, signalled by θ disordering, and which is closely related to a supersolid phase. The other new phase is an edge metal state characterized by zero superfluid stiffness, zero charge ordering, and zero bulk compressibility. However, the edge compressibility of the system is nonzero. While we do not find any intermediate state with 2D metallic conductivity, we are able to connect these results to STM experiments on MoS 2 showing brims of finite density of states around the entire edge of 2D MoS 2 samples.

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Possible Luttinger liquid behavior of edge transport in monolayer transition metal dichalcogenide crystals

Cited by 30 publications

References 36 publications

A tied Fermi liquid to Luttinger liquid model for the explanation of nonlinear transport in conducting polymers

A tied Fermi liquid to Luttinger liquid model for the explanation of nonlinear transport in conducting polymers

A tied Fermi liquid to Luttinger liquid model for nonlinear transport in conducting polymers

Zero temperature superconductor - edge metal - insulator transition in $2D$ bosonic systems

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