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Spin Freezing and Recovery of Sublattice Magnetization in Lightly Doped Lanthanum Cuprate

Conference ·
OSTI ID:759586

{sup 139}La NQR studies in lightly doped La{sub 2}Cu{sub 1-x}Li{sub x}O{sub 4} and La{sub 1.8-x}Eu{sub 0.2}Sr{sub x}CuO{sub 4} are reviewed. A strong enhancement of the {sup 139}La relaxation rate with a peak accompanied by a sudden increase of the local field at low T has been observed similarly to La{sub 2-x}Sr{sub x}CuO{sub 4}. The anomalous magnetic properties are discussed in the light of the microscopic segregation of doped holes into hole-rich domain walls separating undoped AF domains.

Research Organization:
Los Alamos National Lab., NM (US)
Sponsoring Organization:
USDOE Office of Energy Research (ER) (US)
DOE Contract Number:
W-7405-ENG-36
OSTI ID:
759586
Report Number(s):
LA-UR-98-4636
Country of Publication:
United States
Language:
English