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Magnetism in SQUIDs at Millikelvin Temperatures
Open accessAbstract
We have characterized the temperature dependence of the flux threading dc SQUIDs cooled to millikelvin temperatures. The flux increases as 1/T as temperature is lowered; moreover, the flux change is proportional to the density of trapped vortices. The data are compatible with the thermal polarization of surface spins in the trapped fields of the vortices. In the absence of trapped flux, we observe evidence of spin-glass freezing at low temperature. These results suggest an explanation for the universal 1/f flux noise in SQUIDs and superconducting qubits.
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Cited by
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Towards understanding two-level-systems in amorphous solids: insights from quantum circuits
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Quantum process tomography of a universal entangling gate implemented with Josephson phase qubits
Bialczak, R. C., Ansmann, M., Hofheinz, M., Lucero, E., Neeley, M., O’Connell, A. D., Sank, D., Wang, H., Wenner, J., Steffen, M., et al. (2010) · Nature Physics · doi:10.1038/nphys1639 · Cited by 260
Self-citationMartinis, J. M., Ansmann, M., & Aumentado, J. (2009) · Physical Review Letters · doi:10.1103/physrevlett.103.097002 · Cited by 247
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Metadata
- Authors
- Sendelbach, S., Hover, D., Kittel, A., Mück, M., Martinis, J. M., & McDermott, R.
- Venue
- Physical Review Letters
- Publisher
- American Physical Society (APS)
- Published
- 2008-06-05
- Volume
- 100
- Issue
- 22
- Pages
- 227006-227006
- ISSN
- 0031-9007 (ISSN-L)
- 1079-7114
- OpenAlex
- W1979767802
- Cited by
- 160
- References
- 0
- FWCI
- 11.04
- Type
- journal article
- Language
- en
- Open access
- green
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- Sendelbach, S., Hover, D., Kittel, A., Mück, M., Martinis, J. M., & McDermott, R. (2008). Magnetism in SQUIDs at Millikelvin Temperatures. Physical Review Letters. https://doi.org/10.1103/physrevlett.100.227006
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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