Difference between revisions of "Coherent Phonons in YMnO3"
From KAIST Quantum Computing Lab Wiki
Jump to navigationJump to searchm (Created page with 'Coherent phonons of 31 GHz and 77 GHz are observed near the Neel temperature of multiferroic YMnO3. The behaviours of phonon generations are explained in conjunction with the iso…') |
m |
||
| Line 1: | Line 1: | ||
| − | + | Strong spin-lattice coupling in multiferroic hexagonal manganite YMnO$_3$ probed by ultrafast optical spectroscopy | |
| + | |||
| + | We report the observation of spin-lattice coupling in multiferroic YMnO$_3$ by femtosecond near-infrared pump and probe spectroscopy. A coherent 31~GHz acoustic phonon was detected above the magnetic ordering temperature, and a higher frequency coherent mode was observed in the anti-ferromagnetic phase. This temperature-dependent measurement demonstrates that the acoustic phonon excitation is coupled to spin ordering. | ||
| + | |||
| + | APPLIED PHYSICS LETTERS 97, 031914 (2010). | ||
Latest revision as of 09:47, 26 July 2010
Strong spin-lattice coupling in multiferroic hexagonal manganite YMnO$_3$ probed by ultrafast optical spectroscopy
We report the observation of spin-lattice coupling in multiferroic YMnO$_3$ by femtosecond near-infrared pump and probe spectroscopy. A coherent 31~GHz acoustic phonon was detected above the magnetic ordering temperature, and a higher frequency coherent mode was observed in the anti-ferromagnetic phase. This temperature-dependent measurement demonstrates that the acoustic phonon excitation is coupled to spin ordering.
APPLIED PHYSICS LETTERS 97, 031914 (2010).
