化学
兴奋剂
分析化学(期刊)
超导电性
相图
光谱学
反铁磁性
单晶
结晶学
相(物质)
凝聚态物理
物理
有机化学
色谱法
量子力学
作者
Y. Kohsaka,Masaki Azuma,Ikuya Yamada,T. Sasagawa,T. Hanaguri,Mikio Takano,H. Takagi
摘要
Single crystals of Na-doped Ca(2)CuO(2)Cl(2) have been grown for the first time by a flux method under high pressures of up to 5.5 GPa. By changing the Na-solubility limit through the applied pressure, the Na content x was successfully controlled without introducing appreciable compositional inhomogeneity within the millimeter-sized crystals. Structural and chemical characterization indicated that the crystals span the phase diagram continuously from the parent antiferromagnetic insulator to an underdoped high-temperature superconductor. Because of the well-defined cleavage plane and resulting high surface quality, these oxychloride single crystals will provide a unique opportunity to explore the electronic evolution of the high-temperature superconductors, using spectroscopic techniques such as scanning tunneling microscopy/spectroscopy and angle-resolved photoemission spectroscopy.
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