Site-selective oxygen isotope shift in YBa{sub 2}Cu{sub 3}O{sub 7}
- Los Alamos National Laboratory, NM (United States)
- Morris Research, Inc., Berkeley, CA (United States)
- Lawrence Berkeley Laboratory, CA (United States)
YBa{sub 2}Cu{sub 3}O{sub 7}(123) has four inequivalent oxygen sites: the CuO chain sites [O1], the edge sharing apical sites [O4] and the CuO{sub 2} plane sites [O2,O3]. In all previous isotope shift experiments, isotopic substition was nearly complete and uniform among the different oxygen sites. The measured oxygen isotope shift is {Delta}T{sub c} = 0.2K for uniform {sup 18}O occupation. These studies could not distinguish the contributions of the different oxygen sites to the oxygen isotope effect. The authors have measured the site selective oxygen isotope shift (SS-OIS) of 123 samples containing {approximately} 95% {sup 18}O in the CuO{sub 2} plane sites and primarily {sup 16}O in the apical and chain sites.
- Research Organization:
- Los Alamos National Lab., NM (United States)
- OSTI ID:
- 68438
- Report Number(s):
- LA-UR--94-1148; CONF-931247--; ON: DE94009293
- Country of Publication:
- United States
- Language:
- English
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