We have studied momentum distribution of spectral weight around the Fermi level of Bi2Sr2CaCu2O8+delta (Bi2212) superconductor by angle resolved photoemission to understand implication of the lattice and spin fluctuations on the excitation spectrum of cuprate superconductors. The photointensity reveals shadow bands at (0.5 pi,0.5 pi) and equivalent locations, related to the spin density wave (SDW) and suppression of spectral weight around (pi,0) and equivalent locations, related to an anharmonic and incommensurate charge density wave (ICDW) in the diagonal direction. The work further uncovers the fact that the high T-c appears in a complex phase of coexisting lattice and spin fluctuations.
Fermi surface features and stripes in Bi2Sr2CaCu2O8+d superconductor / Saini, Naurang Lal. - In: INTERNATIONAL JOURNAL OF MODERN PHYSICS B. - ISSN 0217-9792. - STAMPA. - 13:(1999), pp. 1189-1194. [10.1142/S0217979299001168]
Fermi surface features and stripes in Bi2Sr2CaCu2O8+d superconductor
SAINI, Naurang Lal
1999
Abstract
We have studied momentum distribution of spectral weight around the Fermi level of Bi2Sr2CaCu2O8+delta (Bi2212) superconductor by angle resolved photoemission to understand implication of the lattice and spin fluctuations on the excitation spectrum of cuprate superconductors. The photointensity reveals shadow bands at (0.5 pi,0.5 pi) and equivalent locations, related to the spin density wave (SDW) and suppression of spectral weight around (pi,0) and equivalent locations, related to an anharmonic and incommensurate charge density wave (ICDW) in the diagonal direction. The work further uncovers the fact that the high T-c appears in a complex phase of coexisting lattice and spin fluctuations.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
