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Polaron theory of nuclear relaxation in YBa2Cu4O8 and other metal oxides

โœ Scribed by A.S. Alexandrov

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
495 KB
Volume
182
Category
Article
ISSN
0921-4534

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โœฆ Synopsis

One of the possible microscopic models of nuclear spin relaxation 1 /T, and of the Knight shift K in YBa$u408

proposed is based on a strong electron-phonon interaction, which forms a carged Bose-liquid of small bipolarons (SB). An explanation of the large value of 63( I/T, ), the absence of the Hebel-Slichter peak, the non-Korringa temperature dependence with the rapid decrease of 1 /T, and K above K above T, and a quantitative agreement with experiment is achieved.

๐Ÿ“œ SIMILAR VOLUMES

Nuclear spin-lattice relaxation and Knig
Nuclear spin-lattice relaxation and Knight shift in YBa2Cu4O8
โœ Takato Machi; Izumi Tomeno; Takayuki Miyatake; Naoki Koshizuka; Shoji Tanaka; Ta ๐Ÿ“‚ Article ๐Ÿ“… 1991 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 315 KB

The temperature dependences of the 63Cu nuclear spin-lattice relaxation rate 1 / T1 and Knight shift K in YBa2Cu4Os have been measured by nuclear quadrupole resonance (NQR) and nuclear magnetic resonance (NMR) techniques. In the normal state, both the 1/T~ for the Cu (2) sites and the in-plane compo