Destroying Coherence in High-Temperature Superconductors with Current Flow
Here, the loss of single-particle coherence going from the superconducting state to the normal state in underdoped cuprates is a dramatic effect that has yet to be understood. Here, we address this issue by performing angle resolved photoemission spectroscopy measurements in the presence of a transport current. We find that the loss of coherence is associated with the development of an onset in the resistance, in that well before the midpoint of the transition is reached, the sharp peaks in the angle resolved photoemission spectra are completely suppressed. Since the resistance onset is a signature of phase fluctuations, this implies that the loss of single-particle coherence is connected with the loss of long-range phase coherence.
- Research Organization:
- Ames Lab., Ames, IA (United States); Argonne National Lab. (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES); National Science Foundation (NSF)
- Grant/Contract Number:
- DMR-1410364; DMR-0537588; AC02-07CH11358; AC02-06CH11357
- OSTI ID:
- 1324379
- Alternate ID(s):
- OSTI ID: 1337679; OSTI ID: 1352643
- Report Number(s):
- IS-J-9043; PRXHAE; 031040
- Journal Information:
- Physical Review. X, Journal Name: Physical Review. X Vol. 6 Journal Issue: 3; ISSN 2160-3308
- Publisher:
- American Physical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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