Phys. Rev. B 78, 140508(R) (2008) [4 pages]
Universal doping dependence of the ground-state staggered magnetization of cuprate superconductors
Abstract
References (19)
Citing Articles
Rinat Ofer, 1 Amit Keren, 1 Omar Chmaissem, 2 and Alex Amato31Physics Department, Technion-Israel Institute of Technology, Haifa 32000, Israel
2Materials Science Division, Argonne National Laboratory, 9700 South Cass Avenue, Argonne, Illinois 60439, USA and Physics Department, Northern Illinois University, DeKalb, Illinois 60115, USA
3Paul Scherrer Institute, CH 5232 Villigen PSI, Switzerland
Received 10 August 2008; published 10 October 2008
Using muon spin rotation we determine the zero-temperature staggered antiferromagnetic order parameter M0 versus hole doping measured from optimum  pm, in the (CaxLa1−x)(Ba1.75−xLa0.25+x)Cu3Oy system. In this system the maximum Tc and the superexchange J vary by 30% between families (x). M0(x,pm) is found to be x independent. Using neutron diffraction we also determine the lattice parameters variations for all x and doping. The oxygen buckling angle is found to change with x, implying a change in the holes kinetic energy. We discuss the surprising insensitivity of M0(x,pm) to the kinetic-energy variations in the framework of the t-J model.
©2008 The American Physical Society
| URL: |
http://link.aps.org/doi/10.1103/PhysRevB.78.140508
|
| DOI: |
10.1103/PhysRevB.78.140508 |
| PACS: |
74.72.-h;
74.25.Ha;
74.62.Dh;
78.70.Nx
|
| KEYWORDS: |
antiferromagnetic materials,
barium compounds,
calcium compounds,
doping,
ground states,
high-temperature superconductors,
lanthanum compounds,
lattice constants,
magnetic superconductors,
magnetisation,
muon probes,
neutron diffraction,
superconducting transition temperature,
superexchange interactions,
t-J model
|
REFERENCES (19)
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