Phonons, Lattice Instabilities and Superconductivity
نویسندگان
چکیده
منابع مشابه
Is room-temperature superconductivity with phonons possible?
By recognizing the vital importance of two-hole Cooper pairs (CPs) in addition to the usual two-electron ones in a strongly-interacting many-electron system, the concept of CPs was re-examined with striking conclusions: namely, they are gapped and linearly-dispersive resonances with a finite lifetime—but provided the ideal-gas Fermi sea is replaced by a BCS-correlated unperturbed ground-state “...
متن کاملPhonons and lattice dielectric properties of zirconia
We have performed a first-principles study of the structural and vibrational properties of the three lowpressure ~cubic, tetragonal, and especially monoclinic! phases of ZrO2, with special attention to the computation of the zone-center phonon modes and related dielectric properties. The calculations have been carried out within the local-density approximation using ultrasoft pseudopotentials a...
متن کاملStrong superconductivity with local Jahn-Teller phonons in C60 solids.
We analyze fulleride superconductivity at experimental doping levels, treating the electron-electron and electron-phonon interactions on an equal footing, and demonstrate that the Jahn-Teller phonons create a local (intramolecular) pairing which is surprisingly resistant to the Coulomb repulsion, despite the weakness of retardation in these low-bandwidth systems. The requirement for coherence t...
متن کاملLattice instabilities in bulk EuTiO3
Lattice instabilities in bulk EuTiO3 D. Bessas,1,2,* K. Z. Rushchanskii,3 M. Kachlik,4 S. Disch,1,5 O. Gourdon,6,7,† J. Bednarcik,8 K. Maca,4 I. Sergueev,1,9,‡ S. Kamba,10 M. Ležaić,3 and R. P. Hermann1,2,§ 1Jülich Centre for Neutron Science JCNS and Peter Grünberg Institut PGI, JARA-FIT, Forschungszentrum Jülich GmbH, D-52425 Jülich, Germany 2Faculté des Sciences, Université de Liège, B-4000 L...
متن کاملLattice Vibrations – Phonons in Solid State
Phonons are quanta of lattice vibrations. They play an important role in various phenomena seen in solid state. The physics of phonons and phenomena associated with them are explored.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Australian Journal of Physics
سال: 1980
ISSN: 0004-9506
DOI: 10.1071/ph800861