Dual-gated hBN/bilayer-graphene superlattices and the transitions between the insulating phases at the charge neutrality point

被引：7

作者：

Iwasaki, Takuya ^{[1
]}

Morita, Yoshifumi ^{[2
]}

Watanabe, Kenji ^{[3
]}

Taniguchi, Takashi ^{[1
]}

机构：

[1] Natl Inst Mat Sci NIMS, Int Ctr Mat Nanoarchitecton, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan

[2] Gunma Univ, Fac Engn, Kiryu, Gunma 3768515, Japan

[3] NIMS, Res Ctr Funct Mat, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan

来源：

PHYSICAL REVIEW B | 2022年 / 106卷 / 16期

基金：

日本学术振兴会;

关键词：

QUANTUM HALL FERROMAGNETISM; BROKEN-SYMMETRY STATES; BILAYER; BANDGAP;

D O I：

10.1103/PhysRevB.106.165134

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report on transport properties in dual-gated hexagonal boron nitride (hBN)/bilayer-graphene (BLG) superlattices. Here, BLG is nontwisted, i.e., plain. This paper focuses on the charge neutrality point (CNP) for a plain BLG. Under a perpendicular magnetic field, transitions between two insulating phases at the CNP are detected by varying a displacement field with the study on the resistance-temperature characteristics and the magnetoresistance. This work opens avenues for exploring the global phase diagram of the hBN/BLG superlattices beyond the CNP.

引用

页数：6