Magnetic field sensor device for direct magnetic field imaging and method of fabrication thereof

US8723514B2 · kind B2 · utility

Assignee

• YEDA RESEARCH AND DEVELOPMENT CO. LTD. · IL

Inventors

• Amit Finkler · Rehovot, IL
• Jens Martin · Frankfurt am Main, DE
• Yuri Myasoedov · Rehovot, IL
• Yehonathan Segev · Haifa, IL
• Amir Yacoby · Cambridge, US
• Eli Zeldov · Rehovot, IL

Key dates

• Filing date: Jun 26, 2008
• Grant date: May 13, 2014
• Expiry date: Mar 7, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T29/49227
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The present invention discloses a novel magnetic sensor device performing direct magnetic field imaging, comprising a probe having a conical tip portion which is configured as a sensor having two superconductors separated by a thin non-superconducting layer (such as a Josephson junction based sensor), where the non-superconducting layer is located at the apex portion of said conical tip, thereby defining electron tunneling region(s) at said apex portion. The technique of the present invention enables the sensor device to be very small and to be brought very close to the sample surface.