Skip to main content
eScholarship
Open Access Publications from the University of California

Collapse of superconductivity in cuprates via ultrafast quenching of phase coherence

  • Author(s): Boschini, F
  • Da Silva Neto, EH
  • Razzoli, E
  • Zonno, M
  • Peli, S
  • Day, RP
  • Michiardi, M
  • Schneider, M
  • Zwartsenberg, B
  • Nigge, P
  • Zhong, RD
  • Schneeloch, J
  • Gu, GD
  • Zhdanovich, S
  • Mills, AK
  • Levy, G
  • Jones, DJ
  • Giannetti, C
  • Damascelli, A
  • et al.
Abstract

© 2018 The Author(s). The possibility of driving phase transitions in low-density condensates through the loss of phase coherence alone has far-reaching implications for the study of quantum phases of matter. This has inspired the development of tools to control and explore the collective properties of condensate phases via phase fluctuations. Electrically gated oxide interfaces1,2, ultracold Fermi atoms3,4and cuprate superconductors5,6, which are characterized by an intrinsically small phase stiffness, are paradigmatic examples where these tools are having a dramatic impact. Here we use light pulses shorter than the internal thermalization time to drive and probe the phase fragility of the Bi2Sr2CaCu2O8+δcuprate superconductor, completely melting the superconducting condensate without affecting the pairing strength. The resulting ultrafast dynamics of phase fluctuations and charge excitations are captured and disentangled by time-resolved photoemission spectroscopy. This work demonstrates the dominant role of phase coherence in the superconductor-to-normal state phase transition and offers a benchmark for non-equilibrium spectroscopic investigations of the cuprate phase diagram.

Many UC-authored scholarly publications are freely available on this site because of the UC Academic Senate's Open Access Policy. Let us know how this access is important for you.

Main Content
Current View