Three-Axis Vector Nano Superconducting Quantum Interference Device

M.J. Pérez

doi:10.1021/acsnano.6b02218

Three-Axis Vector Nano Superconducting Quantum Interference Device

2016-06-28

34

OA

AI

DOI：10.1021/acsnano.6b02218

原文链接

原文求助

摘要

En 中文

We present the design, realization, and performance of a three-axis vector nano superconducting quantum interference device (nanoSQUID). It consists of three mutually orthogonal SQUID nanoloops that allow distinguishing the three components of the vector magnetic moment of individual nanoparticles placed at a specific position. The device is based on Nb/HfTi/Nb Josephson junctions and exhibits line-widths of similar to 250 nm and inner loop areas of 600 x 90 and 500 x 500 nm(2). Operation at temperature T = 4.2 K under external magnetic fields perpendicular to the substrate plane up to similar to 50 mT is demonstrated. The experimental flux noise below similar to 250 n Phi(0)/root Hz in the white noise limit and the reduced dimensions lead to a total calculated spin sensitivity of similar to 630 mu(B)/root Hz and similar to 70 mu(B)/root Hz for the in-plane and out-of-plane components of the vector magnetic moment, respectively. The potential of the device for studying three-dimensional properties of individual nanomagnets is discussed.

Keyword:

nanoSQUID

superconductivity

nanofabrication

magnetic particle detection

three-axis magnetometry

Three-Axis Vector Nano Superconducting Quantum Interference Device

摘要

期刊

机构