Quasiparticle density of states in the perpendicular direction to the Cu-O planes in YBa2Cu3O7-x single-crystal thin films

J. Takada, T. Terashima, Y. Bando, H. Mazaki, K. Iijima, K. Yamamoto, K. Hirata

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Tunneling spectra were observed in normal-metalinsulatorsuperconductor junctions fabricated from single-crystal films of YBa2Cu3O7-x(001), epitaxially grown on SrTiO3(100). The quasiparticle density of states observed in the perpendicular direction to the Cu-O planes exhibits a lifetime broadening picture of quasiparticles at the gap edges. The broadening parameter increases with an increase of the temperature. The recombination lifetime at 60 K is estimated to be 10-13 s. A gap parameter "S (4.6 K) of 9.0±1.8 meV and a coupling constant of (2.4±0.5)

Original languageEnglish
Pages (from-to)4478-4481
Number of pages4
JournalPhysical Review B
Volume40
Issue number7
DOIs
Publication statusPublished - 1989
Externally publishedYes

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Single crystals
Thin films
life (durability)
single crystals
thin films
Temperature
temperature
Direction compound
barium copper yttrium oxide
strontium titanium oxide

ASJC Scopus subject areas

  • Condensed Matter Physics

Cite this

Quasiparticle density of states in the perpendicular direction to the Cu-O planes in YBa2Cu3O7-x single-crystal thin films. / Takada, J.; Terashima, T.; Bando, Y.; Mazaki, H.; Iijima, K.; Yamamoto, K.; Hirata, K.

In: Physical Review B, Vol. 40, No. 7, 1989, p. 4478-4481.

Research output: Contribution to journalArticle

Takada, J, Terashima, T, Bando, Y, Mazaki, H, Iijima, K, Yamamoto, K & Hirata, K 1989, 'Quasiparticle density of states in the perpendicular direction to the Cu-O planes in YBa2Cu3O7-x single-crystal thin films', Physical Review B, vol. 40, no. 7, pp. 4478-4481. https://doi.org/10.1103/PhysRevB.40.4478
Takada, J. ; Terashima, T. ; Bando, Y. ; Mazaki, H. ; Iijima, K. ; Yamamoto, K. ; Hirata, K. / Quasiparticle density of states in the perpendicular direction to the Cu-O planes in YBa2Cu3O7-x single-crystal thin films. In: Physical Review B. 1989 ; Vol. 40, No. 7. pp. 4478-4481.
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