التفاصيل البيبلوغرافية
| العنوان: |
Observation of Coherent Helimagnons and Gilbert damping in an Itinerant Magnet |
| المؤلفون: |
Koralek, J. D., Meier, D., Hinton, J. P., Bauer, A., Parameswaran, S. A., Vishwanath, A., Ramesh, R., Schoenlein, R. W., Pfleiderer, C., Orenstein, J. |
| المصدر: |
Phys. Rev. Lett. 109, 247204 (2012) |
| سنة النشر: |
2012 |
| المجموعة: |
Condensed Matter |
| مصطلحات موضوعية: |
Condensed Matter - Strongly Correlated Electrons, Condensed Matter - Materials Science |
| الوصف: |
We study the magnetic excitations of itinerant helimagnets by applying time-resolved optical spectroscopy to Fe0.8Co0.2Si. Optically excited oscillations of the magnetization in the helical state are found to disperse to lower frequency as the applied magnetic field is increased; the fingerprint of collective modes unique to helimagnets, known as helimagnons. The use of time-resolved spectroscopy allows us to address the fundamental magnetic relaxation processes by directly measuring the Gilbert damping, revealing the versatility of spin dynamics in chiral magnets. (*These authors contributed equally to this work) |
| نوع الوثيقة: |
Working Paper |
| DOI: |
10.1103/PhysRevLett.109.247204 |
| URL الوصول: |
http://arxiv.org/abs/1208.1462 |
| رقم الانضمام: |
edsarx.1208.1462 |
| قاعدة البيانات: |
arXiv |