A new family of high-Tc compounds-Stepping stones toward understanding unconventional superconductivity

• 来源期刊: 科学通报（英文版）
• 年，卷（期）: 2008,（11）
• 页码范围: 1617-1618
• 页数: 2页
• 语种: 英文
• DOI: 10.1007/s11434-008-0250-4

摘要

High-transition temperature (Tc) superconductivity was first discovered in layered copper-based oxides (cuprates)more than two decades ago[1], but its theoretical inter-pretation remains controversial[2,3]. The main question concerning the high-Tc superconductivity phase diagram is the transition between the antiferromagnetic (AF) and superconducting (SC) phases, which is dominated by anomalous properties commonly attributed to a pseu-dogap[4,5] in the spectrum. It is believed that the high-Tc mechanism in cuprates cannot be fully understood within the BCS theory[6] that explains normal supercon-ductivity. Despite much effort, there is no consensus as to the origin of the pseudogap properties, and the high-Tc mechanism remains an open question.