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AN O-17 NMR-STUDY OF THE CU-O PLANES OF BI2SR2CA2CU3O10
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UNSPECIFIED (1992) AN O-17 NMR-STUDY OF THE CU-O PLANES OF BI2SR2CA2CU3O10. PHYSICA C, 193 (1-2). pp. 189-195. ISSN 0921-4534.
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Abstract
Temperature dependent NMR shift and spin-lattice relaxation times have been measured for O-17 from the two distinct Cu-O planes of the n = 3 phase of Bi2Sr2Can-1CunO10. Both sites show a marked, but different, temperature dependence of NMR shift above T(c) (107 K in zero field). The shift for the O-17 resonance associated with the central Cu-O plane starts to decrease from approximately 300 K and the spin component of the Knight shift has dropped to approximately 1/2 of its room temperature value by T(c). For the outer planes the O-17 shift is almost temperature independent until 120 K when it decreases sharply and the spin component of the Knight shift is approximately 2/3 of its room temperature by T(c). The different temperature dependence of the O-17 shift of the outer two Cu-O planes from that of the O-17 of the central plane shows there is little coupling between planes. The relaxation behaviour for both sites is probably Korringa-like (K(s)2T1T is constant) in the normal state with the value of K(s)2T1T being close to the theoretical value for simple s-type metals with no electron-electron interaction.
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QC Physics | ||||
Journal or Publication Title: | PHYSICA C | ||||
Publisher: | ELSEVIER SCIENCE BV | ||||
ISSN: | 0921-4534 | ||||
Official Date: | 1 April 1992 | ||||
Dates: |
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Volume: | 193 | ||||
Number: | 1-2 | ||||
Number of Pages: | 7 | ||||
Page Range: | pp. 189-195 | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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