Chalcogen, Khan, Superconductivity, Tetragonal

• Ba-Ca-Cu-O-Tl
• Ba-Ca-Cu-O-Tl-Zn
• Ni-S-Tl
• Ni-Se-Tl
• Ba-Ca-Cu-Mg-O-Tl
• superconducting transition temperature
• values of superconducting transition temperature
• coherence length
• values of coherence length
• critical magnetic field
• chalcogen
• transitional
• conductor
• alkaline
• high-tc superconductor