Temperature range of superconducting fluctuations above T_c in YBa_2Cu_3O_{7-δ} single crystals

Details Temperature range of superconducting fluctuations above T_c in YBa_2Cu_3O_{7-δ} single crystals Temperature range of superconducting fluctuations above T_c in YBa_2Cu_3O_{7-δ} single crystals

2010-05-26

arxiv.org/abs/1005.4789v3

Phys. Rev. B 83, 144508 (2011)

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1103/PhysRevB.83.144508

Microwave absorption measurements in magnetic fields from zero up to 16 T were used to determine the temperature range of superconducting fluctuations above the superconducting critical temperature T_c in YBa_2Cu_3O_{7-\delta}. Measurements were performed on deeply underdoped, slightly underdoped, and overdoped single crystals. The temperature range of the superconducting fluctuations above T_c is determined by an experimental method which is free from arbitrary assumptions about subtracting the nonsuperconducting contributions to the total measured signal, and/or theoretical models to extract the unknown parameters. The superconducting fluctuations are detected in the ab-plane, and c-axis conductivity, by identifying the onset temperature T'. Within the sensitivity of the method, this fluctuation regime is found only within a fairly narrow region above T_c. Its width increases from 7 K in the overdoped sample (T_c = 89 K), to at most 23 K in the deeply underdoped sample (T_c = 57 K), so that T' falls well below the pseudogap temperature T*. Implications of these findings are discussed in the context of other experimental probes of superconducting fluctuations in the cuprates.

Affiliated with

Also associated with

No associations

Rating

Temperature range of superconducting fluctuations above T_c in YBa_2Cu_3O_{7-δ} single crystals does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Temperature range of superconducting fluctuations above T_c in YBa_2Cu_3O_{7-δ} single crystals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temperature range of superconducting fluctuations above T_c in YBa_2Cu_3O_{7-δ} single crystals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-606102