Standing wave patterns in graphene systems studied using scanning tunneling spectroscopy

Won Jun Jang; Min Hui Chang; Min Jeong Kang; Young Jae Song; Se Jong Kahng

doi:10.1116/6.0003075

Standing wave patterns in graphene systems studied using scanning tunneling spectroscopy

Won Jun Jang, Min Hui Chang, Min Jeong Kang, Young Jae Song, Se Jong Kahng

Department of Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Standing wave patterns are formed near potential barriers or steps due to the interference of incident and reflected waves. Graphene systems show standing wave patterns near atomic step edges, defects, and impurities in scanning tunneling microscopy; however, there are still unexplored examples. In this study, we present our experimental results for graphene directly grown on hexagonal-BN/Cu by chemical vapor deposition. Standing wave patterns were observed in our scanning tunneling microscopy and spectroscopy, revealing linear dispersion relations with a Fermi velocity of about 10⁶ m/s. Our study shows that graphene grown on hexagonal-BN/Cu provides a useful platform to study the electronic characteristics of graphene systems.

Original language	English
Article number	062203
Journal	Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume	41
Issue number	6
DOIs	https://doi.org/10.1116/6.0003075
Publication status	Published - 2023 Dec 1

Bibliographical note

Publisher Copyright:
© 2023 Author(s).

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1116/6.0003075

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title = "Standing wave patterns in graphene systems studied using scanning tunneling spectroscopy",

abstract = "Standing wave patterns are formed near potential barriers or steps due to the interference of incident and reflected waves. Graphene systems show standing wave patterns near atomic step edges, defects, and impurities in scanning tunneling microscopy; however, there are still unexplored examples. In this study, we present our experimental results for graphene directly grown on hexagonal-BN/Cu by chemical vapor deposition. Standing wave patterns were observed in our scanning tunneling microscopy and spectroscopy, revealing linear dispersion relations with a Fermi velocity of about 106 m/s. Our study shows that graphene grown on hexagonal-BN/Cu provides a useful platform to study the electronic characteristics of graphene systems.",

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T1 - Standing wave patterns in graphene systems studied using scanning tunneling spectroscopy

AU - Jang, Won Jun

AU - Chang, Min Hui

AU - Kang, Min Jeong

AU - Song, Young Jae

AU - Kahng, Se Jong

PY - 2023/12/1

Y1 - 2023/12/1

N2 - Standing wave patterns are formed near potential barriers or steps due to the interference of incident and reflected waves. Graphene systems show standing wave patterns near atomic step edges, defects, and impurities in scanning tunneling microscopy; however, there are still unexplored examples. In this study, we present our experimental results for graphene directly grown on hexagonal-BN/Cu by chemical vapor deposition. Standing wave patterns were observed in our scanning tunneling microscopy and spectroscopy, revealing linear dispersion relations with a Fermi velocity of about 106 m/s. Our study shows that graphene grown on hexagonal-BN/Cu provides a useful platform to study the electronic characteristics of graphene systems.

AB - Standing wave patterns are formed near potential barriers or steps due to the interference of incident and reflected waves. Graphene systems show standing wave patterns near atomic step edges, defects, and impurities in scanning tunneling microscopy; however, there are still unexplored examples. In this study, we present our experimental results for graphene directly grown on hexagonal-BN/Cu by chemical vapor deposition. Standing wave patterns were observed in our scanning tunneling microscopy and spectroscopy, revealing linear dispersion relations with a Fermi velocity of about 106 m/s. Our study shows that graphene grown on hexagonal-BN/Cu provides a useful platform to study the electronic characteristics of graphene systems.

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Standing wave patterns in graphene systems studied using scanning tunneling spectroscopy

Abstract

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