Neutron Scattering and Superconducting Order Parameter in YBa2Cu3O7
نویسندگان
چکیده
منابع مشابه
Phonon and magnetic neutron scattering at 41 meV in YBa2Cu3O7.
We report inelastic neutron scattering measurements at excitation energies h̄v , 41 meV in YBa 2Cu 3O 7. We separate magnetic and phonon contributions to the scattering cross section by a detailed analysis of the momentum dependence of the scattered intensity. The previously reported broad peak around q spya, pyad in the normal state can be entirely accounted for by a phonon which primarily in...
متن کاملNonmonotonic dx22y2 Superconducting Order Parameter in Nd22xCexCuO4
G. Blumberg,1,* A. Koitzsch,1 A. Gozar,1 B. S. Dennis,1 C. A. Kendziora,2 P. Fournier,3,† and R. L. Greene3 1Bell Laboratories, Lucent Technologies, Murray Hill, New Jersey 07974 2United States Naval Research Laboratory, Code 6333, Washington, D.C. 20375 3Center for Superconductivity Research and Department of Physics, University of Maryland, College Park, Maryland 20742 (Received 15 June 2001;...
متن کاملSuperconducting order parameter symmetry in multilayer cuprates.
In this paper we classify the allowed order parameter symmetries in multilayer cuprates and discuss their physical consequences, with emphasis on Josephson tunneling and impurity scattering. Our solutions to the gap equation are based on highly non-specific forms for the interand intra-plane pairing interactions in order to arrive at the most general conclusions. Within this framework, the bi-l...
متن کاملNEUTRON SCATTERING STUDY OF ELASTIC MAGNETIC SIGNALS IN SUPERCONDUCTING La1.94Sr0.06CuO4
Recent neutron-scattering experiments on La2−xSrxCuO4 single crystals by Wakimoto et al. have revealed that elastic magnetic peaks appear at low temperatures in both insulating (x = 0.02 − 0.05) and superconducting (x = 0.06) samples. We have carried out further investigations particularly on the elastic incommensurate peaks for x = 0.06, and found that the integrated intensity drastically chan...
متن کاملThe Labusch Parameter of a Driven Flux Line Lattice in YBa2Cu3O7 Superconducting Films
We have investigated the influence of a driving force on the elastic coupling (Labusch parameter) of the field-cooled state of the flux line lattice (FLL) in 400 nm thick YBa2Cu3O7 superconducting films. We found that the FLL of a field-cooled state without driving forces is not in an equilibrium state. Results obtained for magnetic fields applied at 0◦ and 30◦ relative to CuO2 planes, show an ...
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: Physical Review Letters
سال: 1996
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.76.1984