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Low-frequency spin dynamics in a canted antiferromagnet.
| Content Provider | Semantic Scholar |
|---|---|
| Author | Kumada, Norio Muraki, Koji Hirayama, Yoshiro |
| Copyright Year | 2006 |
| Abstract | Resistively detected nuclear spin relaxation measurements in closely separated two-dimensional electron systems reveal strong low-frequency electron-spin fluctuations in the quantum Hall regime. As the temperature is decreased, the spin fluctuations, manifested by a sharp enhancement of the nuclear spin-lattice relaxation rate 1/T1, continue to grow down to the lowest temperature of 66 millikelvin. The observed divergent behavior of 1/T1 signals a gapless spin excitation mode and is a hallmark of canted antiferromagnetic order. Our data demonstrate the realization of a two-dimensional system with planar broken symmetry, in which fluctuations do not freeze out when approaching the zero temperature limit. |
| File Format | PDF HTM / HTML |
| DOI | 10.1126/science.1127094 |
| Alternate Webpage(s) | http://science.sciencemag.org/content/sci/suppl/2006/07/18/313.5785.329.DC1/Kumada.SOM.pdf |
| PubMed reference number | 16857933 |
| Alternate Webpage(s) | https://doi.org/10.1126/science.1127094 |
| Journal | Medline |
| Volume Number | 313 |
| Issue Number | 5785 |
| Journal | Science |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
