Pregled bibliografske jedinice broj: 494366
Unconventional electron-phonon interactions in high-temperature superconductors
Unconventional electron-phonon interactions in high-temperature superconductors // Physical review. B, Condensed matter, 43 (1991), 16; 13728-13731 doi:10.1103/PhysRevB.43.13728 (međunarodna recenzija, članak, znanstveni)
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Naslov
Unconventional electron-phonon interactions in high-temperature superconductors
Autori
Bussmann-Holder, Annette ; Bishop, Alan R. ; Batistić, Ivo
Izvornik
Physical review. B, Condensed matter (0163-1829) 43
(1991), 16;
13728-13731
Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni
Ključne riječi
high temperature superconductors ; structural instability ; electron-phonon interactions
Sažetak
The infrared absorption of the 155-cm/sup -1/ c-axis mode of YBa/sub 2/Cu/sub 3/O/sub 7/ is calculated on the basis of an anharmonic-electron-phonon-interaction model and a large enhancement of its intensity is obtained. A double-well potential in the electron-phonon interaction gives the right order of magnitude for shifts in the bridging O(4) position in agreement with recent extended X-ray-Absorption fine-structure data. Electron-density- two-phonon-interaction terms are derived which represent a violation of the Migdal theorem and a BCS-type superconducting state with nonlinearly enhanced electron-phonon coupling is expected together with an anisotropy of the superconducting energy gap.
Izvorni jezik
Engleski
Znanstvena područja
Fizika
Citiraj ovu publikaciju:
Časopis indeksira:
- Web of Science Core Collection (WoSCC)
- Science Citation Index Expanded (SCI-EXP)
- SCI-EXP, SSCI i/ili A&HCI
- Scopus
