| 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 |
| ID |
707131 |
| Reference URL |
https://collections.lib.utah.edu/ark:/87278/s60k2t6r |
