Design of a scanning gate microscope for mesoscopic electron systems in a cryogen-free dilution refrigerator

被引：31

作者：

Pelliccione, M. ^{[1
,2
]}

Sciambi, A. ^{[1
,2
]}

Bartel, J. ^{[2
,3
]}

Keller, A. J. ^{[3
]}

Goldhaber-Gordon, D. ^{[2
,3
]}

机构：

[1] Stanford Univ, Dept Appl Phys, Stanford, CA 94305 USA

[2] SLAC Natl Accelerator Lab, Stanford Inst Mat & Energy Sci, Menlo Pk, CA 94025 USA

[3] Stanford Univ, Dept Phys, Stanford, CA 94305 USA

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2013年 / 84卷 / 03期

基金：

美国国家科学基金会;

关键词：

ATOMIC-FORCE MICROSCOPY; BRANCHED FLOW; PROBE; CONDUCTIVITY; CANTILEVERS; RESOLUTION; SENSOR;

D O I：

10.1063/1.4794767

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We report on our design of a scanning gate microscope housed in a cryogen-free dilution refrigerator with a base temperature of 15 mK. The recent increase in efficiency of pulse tube cryocoolers has made cryogen-free systems popular in recent years. However, this new style of cryostat presents challenges for performing scanning probe measurements, mainly as a result of the vibrations introduced by the cryocooler. We demonstrate scanning with root-mean-square vibrations of 0.8 nm at 3 K and 2.1 nm at 15 mK in a 1 kHz bandwidth with our design. Using Coulomb blockade thermometry on a GaAs/AlGaAs gate-defined quantum dot, we demonstrate an electron temperature of 45 mK. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4794767]

引用

页数：11

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