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Observation of vortices and hidden pseudogap from scanning tunneling spectroscopic studies of the electron-doped cuprate superconductor Sr0.9La0.1CuO2

Teague, M. L. and Beyer, A. D. and Grinolds, M. S. and Lee, S. I. and Yeh, N.-C. (2009) Observation of vortices and hidden pseudogap from scanning tunneling spectroscopic studies of the electron-doped cuprate superconductor Sr0.9La0.1CuO2. Europhysics Letters, 85 (1). Art. No. 17004. ISSN 0295-5075. http://resolver.caltech.edu/CaltechAUTHORS:TEAepl09

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Abstract

We present the first demonstration of vortices in an electron-type cuprate superconductor, the highest Tc(=43 K) electron-type cuprate Sr0.9La0.1CuO2. Our spatially resolved quasiparticle tunneling spectra reveal a hidden low-energy pseudogap inside the vortex core and unconventional spectral evolution with temperature and magnetic field. These results cannot be easily explained by the scenario of pure superconductivity in the ground state of high-Tc superconductivity.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1209/0295-5075/85/17004DOIArticle
http://www.iop.org/EJ/abstract/0295-5075/85/1/17004PublisherArticle
ORCID:
AuthorORCID
Yeh, N.-C.0000-0002-1826-419X
Additional Information:© 2009 EPLA. Received 2 September 2008, accepted for publication 27 November 2008. Published 7 January 2009. Print publication: Issue 1 (January 2009). The work at Caltech was jointly supported by the Moore Foundation and the Kavli Foundation through the Kavli Nanoscience Institute at Caltech, and the NSF Grant DMR-0405088. The work at Sogang University was supported by the Center of Superconductivity from the program of Acceleration Research of MOST/KOSEF of Korea and Special fund of Sogang University. ADB acknowledges the support of Intel Graduate Fellowship.
Group:Kavli Nanoscience Institute
Funders:
Funding AgencyGrant Number
Gordon and Betty Moore FoundationUNSPECIFIED
Kavli Nanoscience InstituteUNSPECIFIED
NSFDMR-0405088
Korea Science and Engineering FoundationUNSPECIFIED
Sogang UniversityUNSPECIFIED
IntelUNSPECIFIED
Issue or Number:1
Record Number:CaltechAUTHORS:TEAepl09
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:TEAepl09
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:12956
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:10 Jan 2009 09:29
Last Modified:16 Nov 2017 21:41

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