TY - JOUR

T1 - Hybrid h-BN-Graphene Monolayer with B-C Boundaries on a Lattice-Matched Surface

AU - Bokai, Kirill A.

AU - Tarasov, Artem V.

AU - Shevelev, Viktor O.

AU - Vilkov, Oleg Yu.

AU - Makarova, Anna A.

AU - Marchenko, Dmitry

AU - Petukhov, Anatoly E.

AU - Muntwiler, Matthias

AU - Fedorov, Alexander V.

AU - Voroshnin, Vladimir Yu.

AU - Yashina, Lada V.

AU - Laubschat, Clemens

AU - Vyalikh, Denis V.

AU - Usachov, Dmitry Yu.

N1 - Publisher Copyright: Copyright © 2020 American Chemical Society.

PY - 2020/2/11

Y1 - 2020/2/11

N2 - In-plane heterostructures of hexagonal boron nitride (h-BN) and graphene (Gr) have recently appeared in the focus of material science research owing to their intriguing and tunable electronic properties. However, disclosure of the atomic structure and properties of one-dimensional heterojunctions between Gr and h-BN domains remains a largely unexplored and challenging task. Here, we report an approach to obtain a perfectly oriented and atomically thin hybrid h-BN-Gr heterolayer on the Co(0001) surface. A perfect matching of the lattice parameters ensures an epitaxial growth of both Gr and h-BN on the close-packed Co surface. High crystalline quality of the resulting interface allowed to uncover the structural and electronic properties of the lateral h-BN/Gr heterojunctions by means of complementary microscopic and spectroscopic techniques. In particular, we established the coexistence of two types of zigzag boundaries made of B-C bonds, while the boundaries with N-C bonds were found to be unfavorable. Observation of spin-polarized edge states at the C-zigzag edges of Gr domains allowed us to determine the atomic structure of C-BN heterojunctions with scanning tunneling microscopy.

AB - In-plane heterostructures of hexagonal boron nitride (h-BN) and graphene (Gr) have recently appeared in the focus of material science research owing to their intriguing and tunable electronic properties. However, disclosure of the atomic structure and properties of one-dimensional heterojunctions between Gr and h-BN domains remains a largely unexplored and challenging task. Here, we report an approach to obtain a perfectly oriented and atomically thin hybrid h-BN-Gr heterolayer on the Co(0001) surface. A perfect matching of the lattice parameters ensures an epitaxial growth of both Gr and h-BN on the close-packed Co surface. High crystalline quality of the resulting interface allowed to uncover the structural and electronic properties of the lateral h-BN/Gr heterojunctions by means of complementary microscopic and spectroscopic techniques. In particular, we established the coexistence of two types of zigzag boundaries made of B-C bonds, while the boundaries with N-C bonds were found to be unfavorable. Observation of spin-polarized edge states at the C-zigzag edges of Gr domains allowed us to determine the atomic structure of C-BN heterojunctions with scanning tunneling microscopy.

KW - graphene

KW - h-BN

KW - electronic structure

KW - hybrid systems

KW - zigzag boundaries

KW - GROWTH

KW - HEXAGONAL BORON-NITRIDE

KW - INPLANE HETEROSTRUCTURES

KW - LAYER

UR - http://www.scopus.com/inward/record.url?scp=85080053409&partnerID=8YFLogxK

UR - https://www.mendeley.com/catalogue/0f65acaf-b3ed-3cd6-ac69-c13503b3cec7/

U2 - 10.1021/acs.chemmater.9b04207

DO - 10.1021/acs.chemmater.9b04207

M3 - Article

VL - 32

SP - 1172

EP - 1181

JO - Chemistry of Materials

JF - Chemistry of Materials

SN - 0897-4756

IS - 3

ER -