Ultraslow fluctuations in the pseudogap states of HgBa2CaCu2 O6+δ

Yutaka Itoh, Takato Machi, Ayako Yamamoto

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Abstract

We report the transverse relaxation rates 1/T2's of the Cu63 nuclear spin-echo envelope for double-layer high-Tc cuprate superconductors HgBa2CaCu2O6+δ from underdoped to overdoped. The relaxation rate 1/T2L of the exponential function (Lorentzian component) shows a peak at 220-240 K in the underdoped (Tc=103 K) and the optimally doped (Tc=127 K) samples but no peak in the overdoped (Tc=93 K) sample. The enhancement in 1/T2L suggests a development of the zero frequency components of local field fluctuations. Ultraslow fluctuations are hidden in the pseudogap states.

Original languageEnglish
Article number094501
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume95
Issue number9
DOIs
Publication statusPublished - 2017 Mar 6

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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