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
收藏
页数：11
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