Tunneling theory for a bilayer graphene quantum dot’s single- and two-electron states
Tunneling theory for a bilayer graphene quantum dot’s single- and two-electron states
复制标题
双层石墨烯量子点单电子和双电子态的隧道理论
DOI:
10.1088/1367-2630/ac5d00
复制
发表时间:
2022
影响因子:
3.3
通讯作者:
Fal’ko, Vladimir I.
中科院分区:
文献类型:
--
作者:
Knothe, Angelika;Glazman, Leonid I.;Fal’ko, Vladimir I.
The tuneability and control of quantum nanostructures in two-dimensional materials offer promising perspectives for their use in future electronics. It is hence necessary to analyze quantum transport in such nanostructures. Material properties such as a complex dispersion, topology, and charge carriers with multiple degrees of freedom, are appealing for novel device functionalities but complicate their theoretical description. Here, we study quantum tunnelling transport across a few-electron bilayer graphene quantum dot. We demonstrate how to uniquely identify single- and two-electron dot states' orbital, spin, and valley composition from differential conductance in a finite magnetic field. Furthermore, we show that the transport features manifest splittings in the dot's spin and valley multiplets induced by interactions and magnetic field (the latter splittings being a consequence of bilayer graphene's Berry curvature). Our results elucidate spin- and valley-dependent tunnelling mechanisms and will help to utilize bilayer graphene quantum dots, e.g., as spin and valley qubits.
登录
查看更多内容
影响因子:
2.6
作者:
Changsoo Park
通讯作者:
Changsoo Park
影响因子:
8.6
作者:
Lee, Yongjin;Knothe, Angelika;Rickhaus, Peter
通讯作者:
Rickhaus, Peter
影响因子:
16.6
作者:
Kurzmann A;Kleeorin Y;Tong C;Garreis R;Knothe A;Eich M;Mittag C;Gold C;de Vries FK;Watanabe K;Taniguchi T;Fal'ko V;Meir Y;Ihn T;Ensslin K
通讯作者:
Ensslin K
DOI:
10.1103/physrevb.51.1769
发表时间:
1994
期刊:
Physical review. B, Condensed matter
影响因子:
--
作者:
J. J. Palacios;P. Hawrylak
通讯作者:
P. Hawrylak
影响因子:
2.8
作者:
D. Averin
通讯作者:
D. Averin