Counting statistics of single electron transport in bilayer graphene quantum dots

被引：11

作者：

Garreis, Rebekka ^{[1
]}

Gerber, Jonas Daniel ^{[1
]}

Stara, Veronika ^{[2
]}

Tong, Chuyao ^{[1
]}

Gold, Carolin ^{[1
,3
]}

Roosli, Marc ^{[1
]}

Watanabe, Kenji ^{[4
]}

Taniguchi, Takashi ^{[4
]}

Ensslin, Klaus ^{[1
]}

Ihn, Thomas ^{[1
]}

Kurzmann, Annika ^{[1
,5
]}

机构：

[1] Swiss Fed Inst Technol, Solid State Phys Lab, CH-8093 Zurich, Switzerland

[2] Brno Univ Technol, Cent European Inst Technol, Brno 61200, Czech Republic

[3] Columbia Univ, Dept Phys & Astron, New York, NY 10027 USA

[4] Natl Inst Mat Sci, 1-1 Namiki, Tsukuba, Ibaraki 3050044, Japan

[5] Rhein Westfal TH Aachen, Inst Phys 2, D-52074 Aachen, Germany

来源：

PHYSICAL REVIEW RESEARCH | 2023年 / 5卷 / 01期

基金：

瑞士国家科学基金会; 欧盟地平线“2020”;

关键词：

CONTACTS; SPIN;

D O I：

10.1103/PhysRevResearch.5.013042

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We measure telegraph noise of current fluctuations in an electrostatically defined quantum dot in bilayer graphene by real-time detection of single electron tunneling with a capacitively coupled neighboring quantum dot. Suppression of the second and third cumulant (related to shot noise) in a tunable graphene quantum dot is demonstrated experimentally. With this method we demonstrate the ability to measure very low current and noise levels. Furthermore, we use this method to investigate the first spin excited state, an essential prerequisite to measure spin relaxation.

引用

页数：7

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