Spatially modulated 'Mottness' in La2-xBaxCuO4

doi:10.1038/nphys178

	Spatially modulated 'Mottness' in La2-xBaxCuO4
	Abbamonte, P ; Rusydi, A ; Smadici, S ; Gu, GD ; Sawatzky, GA ; Feng, DL
	2005-12
发表期刊	NATURE PHYSICS (IF:17.6[JCR-2023],19.3[5-Year])
ISSN	1745-2473
EISSN	1745-2481
卷号	1 期号:3 页码:155-158
DOI	10.1038/nphys178
摘要	Competition between magnetism and the kinetic energy of mobile carriers (typically holes) in doped antiferromagnets may lead to 'stripe' phases(1-4), which are charged rivers separating regions of oppositely phased antiferromagnetism. In copper oxides the main experimental evidence for such coexisting static spin and charge order comes from neutron scattering in La1.48Nd0.4Sr0.12CuO4 (LNSCO; ref. 5) and La1.875Ba0.125CuO4 (LBCO; ref. 6). However, as a neutron is neutral, it does not detect charge but rather its associated lattice distortion(7), so it is not known whether the stripes involve ordering of the doped holes. Here we present a study of the charge order in LBCO with resonant soft X-ray scattering (RSXS). We observe giant resonances near the Fermi level as well as near the correlated gap(8,9), demonstrating significant modulation in both the doped-hole density and the 'Mottness' or the degree to which the system resembles a Mott insulator(10). The peak-to-trough amplitude of the valence modulation is estimated to be 0.063 holes, which suggests(11) an integrated area of 0.59 holes under a single stripe, dose to the expected 0.5 for half-filled stripes.
收录类别	SCIE
语种	英语
WOS研究方向	Physics
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:000234888400016
出版者	NATURE PUBLISHING GROUP
原始文献类型	Article
来源库	WOS
引用统计	正在获取...
文献类型	期刊论文
条目标识符	https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/510540
专题	个人在本单位外知识产出上海科技大学
作者单位	1.Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA; 2.Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA; 3.Univ Illinois, Dept Phys, Urbana, IL 61801 USA; 4.Univ Groningen, Ctr Mat Sci, NL-9747 AG Groningen, Netherlands; 5.Univ British Columbia, Dept Phys & Astron, Vancouver, BC V6T 1Z1, Canada; 6.Fudan Univ, Dept Phys, Shanghai 200433, Peoples R China
推荐引用方式 GB/T 7714	Abbamonte, P,Rusydi, A,Smadici, S,et al. Spatially modulated 'Mottness' in La2-xBaxCuO4[J]. NATURE PHYSICS,2005,1(3):155-158.
APA	Abbamonte, P,Rusydi, A,Smadici, S,Gu, GD,Sawatzky, GA,&Feng, DL.(2005).Spatially modulated 'Mottness' in La2-xBaxCuO4.NATURE PHYSICS,1(3),155-158.
MLA	Abbamonte, P,et al."Spatially modulated 'Mottness' in La2-xBaxCuO4".NATURE PHYSICS 1.3(2005):155-158.