已为您找到该学者16条结果 成果回收站
封东来, R.
PHYSICAL REVIEW B 69, 220502 (R) (2004),-0001,():
-1年11月30日
A systematic analysis of the complex photoemmision spectrum line shape at (π,0) of heavily overdoped Bi2Sr2CaCu2O8+δ is presented. We show that a coherent component in the quasiparticle excitation is correlated with the superfluid density throughout the entire doping range and suggest it is a direct measure of the order parameter of high temperature superconductors
-
33浏览
-
0点赞
-
0收藏
-
0分享
-
48下载
-
0
-
引用
-
23浏览
-
0点赞
-
0收藏
-
0分享
-
47下载
-
0
-
引用
封东来, K.
PHYSICAL REVIEW B 73, 144507 (2006),-0001,():
-1年11月30日
We explore the electronic structure in the heavily overdoped regime of the single-layer cuprate superconductor Bi1.74Pb0.38Sr1.88CuO6+δ. We found that the nodal quasiparticle behavior is dominated mostly by phonons, while the antinodal quasiparticle line shape is dominated by spin fluctuations. Moreover, while long range spin fluctuations diminish at very high doping, the local magnetic fluctuations still dominate the quasiparticle dispersion, and the system exhibits a strange metal behavior in the entire overdoped regime.
-
17浏览
-
0点赞
-
0收藏
-
0分享
-
46下载
-
0
-
引用
【期刊论文】Electronic excitations near the Brillouin zone boundary of Bi2Sr2CaCu2O8+δ
封东来, D.
PHYSICAL REVIEW B, VOLUME 65, 220501 ,-0001,():
-1年11月30日
Based on angle resolved photoemission spectra measured on different systems at different dopings, momenta, and photon energies, we show that the anomalously large spectral linewidth in the (p,0) region of optimal doped and underdoped Bi2Sr2CaCu2O8+δ has significant contributions from the bilayer band splitting, and that the scattering rate in this region is considerably smaller than previously estimated. This picture of the electronic excitation near (p,0) puts additional experimental constraints on various microscopic theories and data analyses.
-
23浏览
-
0点赞
-
0收藏
-
0分享
-
46下载
-
0
-
引用
封东来, D.L.
Journal of Physics and Chemistry of Solids 67 (2006) 198-200,-0001,():
-1年11月30日
We discuss the puzzles surrounding the interpretation of the 1/8 anomaly in cuprates, highlighting the tension between the real and reciprocal space ways to look at the problem. This issue is relevant to the current discussion on the nature of charge ordering in the form of ‘stripe' and ‘checker-board' as derived from neutron and STM experiments. A resolution of this tension is important to fully understand the electronic structure.
-
43浏览
-
0点赞
-
0收藏
-
0分享
-
43下载
-
0
-
引用