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To investigate the origin of the enhanced Tc (≈ 110K) of the trilayer cuprate superconductor Bi2Sr2Ca2Cu3O10+δ (Bi-2223), its underdoped single crystals are a critical requirement. Here, we demonstrate the first successful in-plane resistivity measurements of heavily underdoped Bi-2223 (zero-resistivity temperatures ≈ 20∼35K). Detailed crystal growth methods, the annealing process, as well as X-ray...
The BaCo2V2O8 compound belongs to a wide group of quasi-one-dimensional (Q1D) antiferromagnets (AF) and its Co 2+ ions form Q1D screw-chains along the c-axis. We here present the first investigation of the microscopic magnetic nature of a single crystalline BaCo2V2O8 sample using μ + SR. Our data reveal the presence of several clear muon frequencies below TN indicatingthe onsetofa...
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