Epitaxially Defined Luttinger Liquids on MoS_{2} Bicrystals

A mirror twin boundary (MTB) in a transition metal dichalcogenide monolayer can host one-dimensional electron liquid of a topological nature with tunable interactions. Unfortunately, electrical characterization of such boundaries has been challenging due to the paucity of samples with large enough s...

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Published inPhysical review letters Vol. 134; no. 4; p. 046301
Main Authors Deng, Bingchen, Ahn, Heonsu, Wang, Jue, Moon, Gunho, Han, Cheolhee, Dongre, Ninad, Lei, Chao, Scuri, Giovanni, Sung, Jiho, Brutschea, Elise, Watanabe, Kenji, Taniguchi, Takashi, Zhang, Fan, Jo, Moon-Ho, Park, Hongkun
Format Journal Article
LanguageEnglish
Published United States 31.01.2025
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Abstract A mirror twin boundary (MTB) in a transition metal dichalcogenide monolayer can host one-dimensional electron liquid of a topological nature with tunable interactions. Unfortunately, electrical characterization of such boundaries has been challenging due to the paucity of samples with large enough size and high quality. Here, we report the conductance measurements of individual MTBs in epitaxially grown monolayer molybdenum disulfide bicrystals that are tens of micrometers long. These MTBs exhibit power-law behaviors of conductance as a function of temperature and bias voltage up to room temperature, consistent with electrons tunneling into a Luttinger liquid. Transport measurements of two distinct types of MTBs reveal the critical role of the atomic-scale defects. This study demonstrates that MTBs in transition metal dichalcogenide monolayers provide an exciting new platform for studying the interplay between electronic interactions and topology.
AbstractList A mirror twin boundary (MTB) in a transition metal dichalcogenide monolayer can host one-dimensional electron liquid of a topological nature with tunable interactions. Unfortunately, electrical characterization of such boundaries has been challenging due to the paucity of samples with large enough size and high quality. Here, we report the conductance measurements of individual MTBs in epitaxially grown monolayer molybdenum disulfide bicrystals that are tens of micrometers long. These MTBs exhibit power-law behaviors of conductance as a function of temperature and bias voltage up to room temperature, consistent with electrons tunneling into a Luttinger liquid. Transport measurements of two distinct types of MTBs reveal the critical role of the atomic-scale defects. This study demonstrates that MTBs in transition metal dichalcogenide monolayers provide an exciting new platform for studying the interplay between electronic interactions and topology.
Author Sung, Jiho
Wang, Jue
Taniguchi, Takashi
Brutschea, Elise
Moon, Gunho
Han, Cheolhee
Zhang, Fan
Jo, Moon-Ho
Deng, Bingchen
Ahn, Heonsu
Dongre, Ninad
Lei, Chao
Scuri, Giovanni
Watanabe, Kenji
Park, Hongkun
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  organization: Harvard University, Department of Physics, Cambridge, Massachusetts 02138, USA
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  fullname: Ahn, Heonsu
  organization: Pohang University of Science and Technology (POSTECH), Department of Materials Science and Engineering, Pohang 37673, South Korea
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  surname: Wang
  fullname: Wang, Jue
  organization: Harvard University, Department of Physics, Cambridge, Massachusetts 02138, USA
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  organization: The University of Texas at Dallas, Department of Physics, Richardson, Texas 75080, USA
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  fullname: Lei, Chao
  organization: The University of Texas at Austin, Department of Physics, Austin, Texas 78712, USA
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  surname: Scuri
  fullname: Scuri, Giovanni
  organization: Stanford University, Department of Electrical Engineering, Stanford, California 94305, USA
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  surname: Sung
  fullname: Sung, Jiho
  organization: Harvard University, Department of Physics, Cambridge, Massachusetts 02138, USA
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  surname: Brutschea
  fullname: Brutschea, Elise
  organization: Harvard University, Department of Chemistry and Chemical Biology, Cambridge, Massachusetts 02138, USA
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  organization: National Institute for Materials Science, Research Center for Electronic and Optical Materials, 1-1 Namiki, Tsukuba 305-0044, Japan
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  surname: Taniguchi
  fullname: Taniguchi, Takashi
  organization: National Institute for Materials Science, Research Center for Materials Nanoarchitectonics, 1-1 Namiki, Tsukuba 305-0044, Japan
– sequence: 13
  givenname: Fan
  surname: Zhang
  fullname: Zhang, Fan
  organization: The University of Texas at Dallas, Department of Physics, Richardson, Texas 75080, USA
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  givenname: Moon-Ho
  surname: Jo
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  organization: Pohang University of Science and Technology (POSTECH), Department of Physics, Pohang 37673, South Korea
– sequence: 15
  givenname: Hongkun
  surname: Park
  fullname: Park, Hongkun
  organization: Harvard University, Department of Physics, Cambridge, Massachusetts 02138, USA
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Snippet A mirror twin boundary (MTB) in a transition metal dichalcogenide monolayer can host one-dimensional electron liquid of a topological nature with tunable...
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Title Epitaxially Defined Luttinger Liquids on MoS_{2} Bicrystals
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