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Scanning SQUID microscope for studying vortex matter in type-II superconductors / Amit Finkler.
Springer Nature - Springer Physics and Astronomy eBooks 2012 English International Available online
View online- Format:
- Book
- Thesis/Dissertation
- Author/Creator:
- Finkler, Amit.
- Series:
- Springer theses.
- Springer theses : recognizing outstanding Ph.D. research, 2190-5053
- Language:
- English
- Subjects (All):
- Superconducting quantum interference devices.
- Superconductors.
- Physical Description:
- 1 online resource (73 p.)
- Edition:
- 1st ed. 2012.
- Place of Publication:
- Heidelberg, Germany : Springer, 2012.
- Language Note:
- English
- Summary:
- Common methods of local magnetic imaging display either a high spatial resolution and relatively poor field sensitivity (MFM, Lorentz microscopy), or a relatively high field sensitivity but limited spatial resolution (scanning SQUID microscopy). Since the magnetic field of a nanoparticle or nanostructure decays rapidly with distance from the structure, the achievable spatial resolution is ultimately limited by the probe-sample separation. This thesis presents a novel method for fabricating the smallest superconducting quantum interference device (SQUID) that resides on the apex of a very sharp tip. The nanoSQUID-on-tip displays a characteristic size down to 100 nm and a field sensitivity of 10^-3 Gauss/Hz^(1/2). A scanning SQUID microscope was constructed by gluing the nanoSQUID-on-tip to a quartz tuning-fork. This enabled the nanoSQUID to be scanned within nanometers of the sample surface, providing simultaneous images of sample topography and the magnetic field distribution. This microscope represents a significant improvement over the existing scanning SQUID techniques and is expected to be able to image the spin of a single electron.
- Contents:
- Introduction
- Scientific Background
- Open Questions
- Goal
- Methods
- SQUID-on-tip Fabrication
- Tuning Fork Assembly
- Scanning SQUID Microscopy
- Fabrication of Samples
- Results
- SQUID-on-tip Characterization
- Imaging
- Discussion
- Appendices.
- Notes:
- Description based upon print version of record.
- Doctoral thesis accepted by the Weizmann Institute of Science, Rehovot, Israel.
- Includes bibliographical references and index.
- ISBN:
- 1-283-62709-4
- 9786613939548
- 3-642-29393-X
- OCLC:
- 794224349
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