Nonequilibrium electron and lattice dynamics of strongly correlated Bi₂Sr₂CaCu₂O_8+δ single crystals.

ABSTRACT: The interplay between the electronic and lattice degrees of freedom in nonequilibrium states of strongly correlated systems has been debated for decades. Although progress has been made in establishing a hierarchy of electronic interactions with the use of time-resolved techniques, the role of the phonons often remains in dispute, a situation highlighting the need for tools that directly probe the lattice. We present the first combined megaelectron volt ultrafast electron diffraction and time- and angle-resolved photoemission spectroscopy study of optimally doped Bi₂Sr₂CaCu₂O_8+δ. Quantitative analysis of the lattice and electron subsystems' dynamics provides a unified picture of nonequilibrium electron-phonon interactions in the cuprates beyond t

SUBMITTER: Konstantinova T 

PROVIDER: S-EPMC5922801 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature