Published September 1, 2007
| Version v1
Journal article
Gap distribution in overdoped La2-xSrxCuO4 observed by scanning tunneling spectroscopy
- 1. Department of Physics, Tokyo University of Science, 1-3 Kagurazaka, Shinjuku-ku, Tokyo 162-8601 (Japan)
Description
Low-temperature scanning tunneling spectroscopy on the highly overdoped La1.78Sr0.22CuO4 (Tc = 27 K) single crystal reveals gap inhomogeneity at 4.2 K. The energy gap Δ observed in the tunneling spectra distributes around 7 meV: it ranges from 4 to 20 meV. The spectra with smaller Δ (4-10 meV) exhibit gap edge peaks and flat background density-of-states, which is general characteristics of the overdoped cuprate high-temperature superconductors. On the other hand, the spectra with Δ exceeding 10 meV shows broad feature without clear gap edge peaks
Availability note (English)
Available from http://dx.doi.org/10.1016/j.physc.2007.03.129Additional details
Identifiers
- DOI
- 10.1016/j.physc.2007.03.129;
- PII
- S0921-4534(07)00273-0;
Publishing Information
- Journal Title
- Physica. C, Superconductivity
- Journal Volume
- 460-462
- Journal Page Range
- p. 880-881
- ISSN
- 0921-4534
- CODEN
- PHYCE6
Conference
- Title
- 8. international conference on materials and mechanisms of superconductivity and high temperature superconductors
- Acronym
- M2S-HTSC VIII
- Dates
- 9-14 Jul 2006
- Place
- Dresden (Germany)
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 39070835
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- COPPER COMPOUNDS; CUPRATES; DENSITY; DISTRIBUTION; ENERGY GAP; HIGH-TC SUPERCONDUCTORS; LANTHANUM COMPOUNDS; MONOCRYSTALS; OXYGEN COMPOUNDS; SCANNING TUNNELING MICROSCOPY; SPECTRA; SPECTROSCOPY; STRONTIUM COMPOUNDS; TEMPERATURE RANGE 0000-0013 K; TEMPERATURE RANGE 0013-0065 K; TRANSITION TEMPERATURE; TUNNEL EFFECT
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; COPPER COMPOUNDS; CRYSTALS; MICROSCOPY; OXYGEN COMPOUNDS; PHYSICAL PROPERTIES; RARE EARTH COMPOUNDS; SUPERCONDUCTORS; TEMPERATURE RANGE; THERMODYNAMIC PROPERTIES; TRANSITION ELEMENT COMPOUNDS; TYPE-II SUPERCONDUCTORS
Optional Information
- Copyright
- Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.