Scanning SQUID-on-tip microscope in a top-loading cryogen-free dilution refrigerator

被引：6

作者：

Zhou, Haibiao ^{[1
]}

Auerbach, Nadav ^{[1
]}

Roy, Indranil ^{[1
]}

Bocarsly, Matan ^{[1
]}

Huber, Martin E. ^{[2
]}

Barick, Barun ^{[1
]}

Pariari, Arnab ^{[1
]}

Hucker, Markus ^{[1
]}

Lim, Zhi Shiuh ^{[3
]}

Ariando, A. ^{[3
]}

Berdyugin, Alexey I. ^{[4
,5
]}

Xin, Na ^{[4
,5
]}

Rappaport, Michael ^{[6
]}

Myasoedov, Yuri ^{[1
]}

Zeldov, Eli ^{[1
]}

机构：

[1] Weizmann Inst Sci, Dept Condensed Matter Phys, IL-7610001 Rehovot, Israel

[2] Univ Colorado Denver, Dept Phys & Elect Engn, Denver, CO 80204 USA

[3] Natl Univ Singapore, Dept Phys, Singapore, Singapore

[4] Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, England

[5] Univ Manchester, Natl Graphene Inst, Manchester M13 9PL, England

[6] Weizmann Inst Sci, Dept Phys Core Facil, IL-7610001 Rehovot, Israel

来源：

REVIEW OF SCIENTIFIC INSTRUMENTS | 2023年 / 94卷 / 05期

基金：

以色列科学基金会; 新加坡国家研究基金会; 欧洲研究理事会;

关键词：

QUANTUM INTERFERENCE DEVICE; DISSIPATION; INSULATOR;

D O I：

10.1063/5.0142073

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The scanning superconducting quantum interference device (SQUID) fabricated on the tip of a sharp quartz pipette (SQUID-on-tip) has emerged as a versatile tool for the nanoscale imaging of magnetic, thermal, and transport properties of microscopic devices of quantum materials. We present the design and performance of a scanning SQUID-on-tip microscope in a top-loading probe of a cryogen-free dilution refrigerator. The microscope is enclosed in a custom-made vacuum-tight cell mounted at the bottom of the probe and is suspended by springs to suppress vibrations caused by the pulse tube cryocooler. Two capillaries allow for the in situ control of helium exchange gas pressure in the cell that is required for thermal imaging. A nanoscale heater is used to create local temperature gradients in the sample, which enables quantitative characterization of relative vibrations between the tip and the sample. The spectrum of the vibrations shows distinct resonant peaks with a maximal power density of about 27 nm/Hz(1/2) in the in-plane direction. The performance of the SQUID-on-tip microscope is demonstrated by magnetic imaging of the MnBi2Te4 magnetic topological insulator, magnetization and current distribution imaging in a SrRuO3 ferromagnetic oxide thin film, and thermal imaging of dissipation in graphene.

引用

页数：9

共 1 条

[1] Scanning SQUID microscopy in a cryogen-free cooler
Shperber, Yishai
Vardi, Naor
Persky, Eylon
Wissberg, Shai
Huber, Martin E.
Kalisky, Beena
REVIEW OF SCIENTIFIC INSTRUMENTS, 2019, 90 (05):

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