Published October 1, 2007
| Published
Journal Article
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Macroscopic evidence for quantum criticality and field-induced quantum fluctuations in cuprate superconductors
Abstract
We present macroscopic experimental evidence for field-induced microscopic quantum fluctuations in different hole- and electron-type cuprate superconductors with varying doping levels and numbers of CuO2 layers per unit cell. The significant suppression of the zero-temperature in-plane magnetic irreversibility field relative to the paramagnetic field in all cuprate superconductors suggests strong quantum fluctuations due to the proximity of the cuprates to quantum criticality.
Additional Information
© 2007 The American Physical Society. (Received 15 January 2007; revised 7 October 2007; published 25 October 2007) Research at Caltech was supported by NSF Grant No. DMR-0405088 and through the NHMFL. The SQUID data were taken at the Beckman Institute at Caltech. Work at Pohang University was supported by the Ministry of Science and Technology of Korea. The authors gratefully acknowledge Kazuyasu Tokiwa and Tsuneo Watanabe at the Tokyo University of Science for providing the HgBa2Ca4Cu5Ox (Hg-1245) samples.Attached Files
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Additional details
- Eprint ID
- 9094
- Resolver ID
- CaltechAUTHORS:BEYprb07
- DMR-0405088
- NSF
- Ministry of Science and Technology (Korea)
- Created
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2007-10-26Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field