skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Raman scattering studies of ultrathin-layer YBa[sub 2]Cu[sub 3]O[sub 7]/PrBa[sub 2]Cu[sub 3]O[sub 7] superlattices

Abstract

We present Raman scattering studies of c-oriented ultrathin-layer superconducting (YBa[sub 2]Cu[sub 3]O[sub 7])[sub m]/(PrBa[sub 2]Cu[sub 3]O[sub 7])[sub n] superlattices. For the superlattice with (m = 2, n = 1) sequence. Raman spectra reveal a new line in the spectral region around 320 cm[sup [minus]1]. It is interpreted as a mode representing a combination of IR optical phonons of the Y-sublayers with an admixture of a B[sub 1g] type Raman active vibration in the Pr sublayers. This new line, which is similar to those from the interior of the Brillouin zone of the original lattice, does not exhibit superconductivity-induced self-energy effects, although its counterpart in the pure substance does. No additional line is found in the (m = 1, n = 2) superlattice in the same f region, supporting our interpretation for the (m = 2, n = 1) sample. 19 refs., 4 figs.

Authors:
;  [1]; ; ;  [2]
  1. Johannes-Gutenberg-Universitaet Mainz (Germany)
  2. TH-Darmstadt (Germany)
Publication Date:
OSTI Identifier:
7268298
Report Number(s):
CONF-930710-
Journal ID: ISSN 0896-1107; CODEN: JOUSEH; CNN: SFB 252; 13N 5476; TRN: 94-014495
Resource Type:
Conference
Journal Name:
Journal of Superconductivity; (United States)
Additional Journal Information:
Journal Volume: 7:1; Conference: Physics and chemistry of molecular and oxide superconductors conference, Eugene, OR (United States), 27-31 Jul 1993; Journal ID: ISSN 0896-1107
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; 37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; HIGH-TC SUPERCONDUCTORS; CRYSTAL LATTICES; RAMAN SPECTROSCOPY; BARIUM COMPOUNDS; BRILLOUIN EFFECT; CERAMICS; CUPRATES; OXIDES; PHONONS; PRASEODYMIUM COMPOUNDS; RAMAN EFFECT; SCATTERING; YTTRIUM COMPOUNDS; ALKALINE EARTH METAL COMPOUNDS; CHALCOGENIDES; COHERENT SCATTERING; COPPER COMPOUNDS; CRYSTAL STRUCTURE; LASER SPECTROSCOPY; OXYGEN COMPOUNDS; QUASI PARTICLES; RARE EARTH COMPOUNDS; SPECTROSCOPY; SUPERCONDUCTORS; TRANSITION ELEMENT COMPOUNDS; 360202* - Ceramics, Cermets, & Refractories- Structure & Phase Studies; 400102 - Chemical & Spectral Procedures; 360204 - Ceramics, Cermets, & Refractories- Physical Properties; 360207 - Ceramics, Cermets, & Refractories- Superconducting Properties- (1992-)

Citation Formats

Li, R, Feile, R, Jakob, G, Hahn, T, and Adrian, H. Raman scattering studies of ultrathin-layer YBa[sub 2]Cu[sub 3]O[sub 7]/PrBa[sub 2]Cu[sub 3]O[sub 7] superlattices. United States: N. p., 1994. Web.
Li, R, Feile, R, Jakob, G, Hahn, T, & Adrian, H. Raman scattering studies of ultrathin-layer YBa[sub 2]Cu[sub 3]O[sub 7]/PrBa[sub 2]Cu[sub 3]O[sub 7] superlattices. United States.
Li, R, Feile, R, Jakob, G, Hahn, T, and Adrian, H. Tue . "Raman scattering studies of ultrathin-layer YBa[sub 2]Cu[sub 3]O[sub 7]/PrBa[sub 2]Cu[sub 3]O[sub 7] superlattices". United States.
@article{osti_7268298,
title = {Raman scattering studies of ultrathin-layer YBa[sub 2]Cu[sub 3]O[sub 7]/PrBa[sub 2]Cu[sub 3]O[sub 7] superlattices},
author = {Li, R and Feile, R and Jakob, G and Hahn, T and Adrian, H},
abstractNote = {We present Raman scattering studies of c-oriented ultrathin-layer superconducting (YBa[sub 2]Cu[sub 3]O[sub 7])[sub m]/(PrBa[sub 2]Cu[sub 3]O[sub 7])[sub n] superlattices. For the superlattice with (m = 2, n = 1) sequence. Raman spectra reveal a new line in the spectral region around 320 cm[sup [minus]1]. It is interpreted as a mode representing a combination of IR optical phonons of the Y-sublayers with an admixture of a B[sub 1g] type Raman active vibration in the Pr sublayers. This new line, which is similar to those from the interior of the Brillouin zone of the original lattice, does not exhibit superconductivity-induced self-energy effects, although its counterpart in the pure substance does. No additional line is found in the (m = 1, n = 2) superlattice in the same f region, supporting our interpretation for the (m = 2, n = 1) sample. 19 refs., 4 figs.},
doi = {},
journal = {Journal of Superconductivity; (United States)},
issn = {0896-1107},
number = ,
volume = 7:1,
place = {United States},
year = {1994},
month = {2}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

Save / Share: