We use Raman scattering to investigate magnetic polarons and spin-carrier interaction effects in the (Eu,Gd)O system. Raman scattering studies reveal great richness in the phase behavior of this system: a spin-fluctuation-dominated paramagnetic (PM) phase regime for T > T* > T, a two-phase...
Polar phonons and spin excitations coupling in multiferroic BiFeO3 crystals Raman scattering measurements on BiFeO3 single crystals show an important coupling between the magnetic order and lattice vibrations. The temper... P.,Rovillain,M.,... - 《Physical Review B》 被引量: 77发表: 2009年 Magn...
A recently developed quantum kinetic description for the electrons in a two-band polar semiconductor coupled to LO phonons and excited by a femtosecond las... DB Tran Thoai,H Haug - 《Phys Rev B Condens Matter》 被引量: 95发表: 1993年 Excitation Induced Dephasing in Semiconductor Quantum Dots...
Further, the use of second-harmonic generation (SHG) imaging in combination with confocal Raman imaging is an upcoming field of research. V. Gopalan and his co-workers have applied polar SHG imaging to identify tetragonal BaTiO3 films and their domains (90o or 180o domains). They determined...
Fifty years after its first observation, Raman spectroscopy started to become a prominent analysis technique among other optical metrology techniques, such as those involving absorption of infrared light; particularly when water and other useful polar solvents were present, because these media typically st...
Magnetic field and III–V semiconductorsUsing electromagnetic treatment, a detailed analytical investigation is made of the coherent Raman scattering (CRS) of the Stokes component of scattered wave in an obliquely magnetized (with respect to the direction of propagation) weakly polar III鈥揤 ...
Exciton linewidth in semiconducting cylindrical quantum wire structures due to scattering by polar optical phonons: Finite potential well model In our previous work [H. Ham and H. N. Spector, Phys. Rev. B62, 13599 (2000)], the contribution to the exciton linewidth due to scattering by polar...
which is key for both repeatability and high active SERS enhancement [137,138]. 3D nanostructures with specific designs have been used as SERS substrates for cancer and pathogens detection, including Ag arrays, Ag nanoring cavities, Au octupolar meta structures, etc. Typical examples are listed ...
field-induced the change of polar state in the substrate. This modulation effect is observed over a broad range of temperatures. The coincident changes of bothmagnetic propertiesandRaman scatteringspectra with different polarization times for theheterostructureare detected, which indicates that the non-...
3d–f, since the polar plots for all positions in the cross polarization case have the same symmetry and similar Raman intensities. Therefore, the JT planes of our LMO film prefer to be perpendicular to the substrate, and the symmetry of the polar plots can be attributed to the relative ...