79Br nuclear-quadrupole-resonance lineshape and Raman-induced spin-lattice relaxation in the incommensurate phase of β- ThBr4

Update item information
Publication Type Journal Article
School or College College of Science
Department Physics
Creator Ailion, David Charles
Other Author Chen, Songhua
Title 79Br nuclear-quadrupole-resonance lineshape and Raman-induced spin-lattice relaxation in the incommensurate phase of β- ThBr4
Date 1989
Description We performed 7 9Br nuclear-quadrupole-resonance (NQR) line-shape and spin-lattice relaxation time measurements in the incommensurate (D system j8-ThBr4 over the temperature range 293-2.5 K. In addition, we extended the theory of the effects of Raman processes on amplitudon and phason spin-lattice relaxation in incommensurate systems by obtaining general expressions for the spectral densities and phason gap A^ that are valid at all temperatures in the / phase. By measuring Tx selectively for the different parts of the broadened NQR line in /3-ThBr4, we separately obtained the phason and amplitudon contributions, and TXA, respectively. A comparison between theory and the experimental data shows excellent agreement and demonstrates that spin-lattice relaxation in /?-ThBr4 is dominated by Raman processes. The phason gap A^ was determined to be 0.072+0.020 THz.
Type Text
Publisher American Physical Society
Journal Title Physical Review B
Volume 40
First Page 2332
Subject Spin-lattice; NQR; Raman process; Line shape; Phason gap; Incommensurate systems
Subject LCSH Magnetic resonance; Nuclear physics
Language eng
Bibliographic Citation Chen, S. & Ailion, D. C. (1989). 79Br nuclear-quadrupole-resonance lineshape and raman-induced spin-lattice relaxation in the incommensurate phase of β- ThBr4. Physical Review B, 40, 2332.
Rights Management (c) American Physical Society
Format Medium application/pdf
Format Extent 1,535,471 Bytes
Identifier ir-main,5026
ARK ark:/87278/s60k2t6r
Setname ir_uspace
Date Created 2012-06-13
Date Modified 2021-05-06
ID 707131
Reference URL https://collections.lib.utah.edu/ark:/87278/s60k2t6r
Back to Search Results