Spin Flip Wave Generation in Semimagnetic Doped Quantum Wells

Terahertz Radiation from Magnetic Excitations in Diluted Magnetic Semiconductors

“…We preferentially used a well controlled test-bed DMS system made of a two dimensional electron gas (2DEG) embedded in a Cd 1−x Mn x Te quantum well (QW), which has been introduced [12][13][14][15] as an alternative for magnetic excitations study in DMS. In this paramagnetic system the acoustic and optical spin wave modes have been evidenced by Raman spectroscopy [12][13][14][15] and time-domain optical pump-probe experiments [16,17]. Upon application of an external magnetic field Bz parallel to the quantum well plane (see inset of Fig.1 and Ref.…”