Diamagnetic Precursor State in High-Tc Oxide Superconductors near Optimal Doping Using Scanning Superconducting Quantum Interference Device Microscopy.
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- Sugimoto Akira
- Department of Physics and CREST-JST, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
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- Iguchi Ienari
- Department of Physics and CREST-JST, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
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- Miyake Takashi
- Department of Physics and CREST-JST, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan
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- Sato Hisashi
- NTT Basic Research Laboratories, 3-1 Morinosato Wakamiya, Atsugi 243-0198, Japan
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Description
Magnetic images of high-Tc La1.85Sr0.15CuO4 (LSCO) and YBa2Cu3O7-y (YBCO) thin films near optimal doping observed by scanning superconducting quantum interference device (SQUID) microscopy are presented in the temperature range both below and above the transition temperature Tc. While the quantized vortices were observable below Tc, local diamagnetic domains that led to the Meissner state were found in the narrow limited temperature range above Tc. The result provides evidence that local diamagnetic domains are closely related to the pseudogap state and the d-wave superconductivity.
Journal
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 41 (5A), L497-L499, 2002
The Japan Society of Applied Physics
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Keywords
- precursor state
- Meissner state
- pseudogap
- local pairing
- <I>d</I>-wave symmetry
- La<FONT SIZE="-1"><SUB>2-<I>x</I></SUB></FONT>Sr<FONT SIZE="-1"><SUB><I>x</I></SUB></FONT>CuO<FONT SIZE="-1"><SUB>4</SUB></FONT> superconductor
- YBCO superconductor
- scanning SQUID microscopy
- tricrystal junction
- optimal doping
Details 詳細情報について
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- CRID
- 1390282681231999488
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- NII Article ID
- 210000052799
- 110006349679
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- NII Book ID
- AA10650595
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- ISSN
- 13474065
- 00214922
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- NDL BIB ID
- 6154710
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed