Study of Pseudogap in Underdoped Cuprate  

作　　者：LOU Ping WU Hang-Sheng 

机构地区：[1]Department of Physics, Anhui University, Hefei 230039, China Department of Physics, University of Science and Technology of China, Hefei 230026, China

出　　处：《Communications in Theoretical Physics》2001年第7期91-94,共4页理论物理通讯（英文版）

摘　　要：A mean-field spin-density wave (SDW) analysis of pseudogap in the underdoped cuprates is proposed on the dependence of the energy gap which mimics the pseudogap near (π, 0) point at least. It implies that the pseudogap structure near (π, 0) is not sensitive to the long-range order and will survive leading to the pseudogap phenomenon in the underdoped metallic phase. On the other hand, in the long-range ordering antiferromagnetic region, the mean-field SDW theory holds and the pseudogap structure predicated by the theory should be observable experimentallyv. Then one prediction is that the pseudogap would smoothly extrapolate between itinerant antiferromagnetic phase and underdoped metallic phase.

关 键 词：high-temperature superconductors  pseudogap  underdoped cuprates  MEAN-FIELD SDW analysis 

分 类 号：O4[理学—物理]