Anomalously large spin susceptibility enhancement in n-doped CdMnTe quantum wells
Creators
- 1. Laboratoire Charles Coulomb, UMR 5221, Département Semi-conducteurs, Matériaux et Capteurs, Université Montpellier 2, France and Laboratoire de Physique des Matériaux: Structures et Propriétés, Faculté (Tunisia)
- 2. Laboratoire Charles Coulomb, UMR 5221, Departement Semi-conducteurs, Materiaux et Capteurs, Universite Montpellier 2 (France)
- 3. Laboratoire de Physique des Matériaux: Structures et Propriétés, Faculté des Sciences de Bizerte, Université de Carthage, 7021 Zarzouna (Tunisia)
- 4. Institut des NanoSciences de Paris, CNRS/Université Paris 6, 4 place Jussieu, F-75005 Paris (France)
- 5. Institute of Physics, Polish Academy of Sciences, 02-668 Warsaw (Poland)
Description
We report on time-resolved Kerr rotation (TRKR) experiments done on n-doped CdMnTe quantum wells (QWs), in the regime where strong coupling between the electron and the Mn spin-flip excitations shows up. It has been proposed previously to deduce the 2D electron gas spin susceptibility from the coupling energy between these spin excitations. Here we measure the coupling energy on a high mobility sample down to very low excitation density, and compare the results with spin-flip Raman scattering (SFRS) on the same sample. The electron spin polarizations measured by TRKR and SFRS are found in relatively good agreement. However the spin susceptibility measured by TRKR exceeds systematically the values predicted by many-body theory. This could be an indication that the two-oscillator model used to describe mixed electron-Mn spin excitations needs to be improved
Additional details
Identifiers
- DOI
- 10.1063/1.4848429;
Publishing Information
- Journal Title
- AIP Conference Proceedings
- Journal Volume
- 1566
- Journal Issue
- 1
- Journal Page Range
- p. 349-350
- ISSN
- 0094-243X
- CODEN
- APCPCS
Conference
- Title
- 31. international conference on the physics of semiconductors
- Acronym
- ICPS 2012
- Dates
- 29 Jul - 3 Aug 2012
- Place
- Zurich (Switzerland)
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 45083067
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S77: NANOSCIENCE AND NANOTECHNOLOGY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- COUPLING; DENSITY; DOPED MATERIALS; ELECTRON GAS; ELECTRONS; EXCITATION; OSCILLATORS; QUANTUM WELLS; RAMAN EFFECT; SPIN; SPIN FLIP; SPIN ORIENTATION; STRONG-COUPLING MODEL
- Descriptors DEC
- ANGULAR MOMENTUM; ELECTRONIC EQUIPMENT; ELEMENTARY PARTICLES; ENERGY-LEVEL TRANSITIONS; EQUIPMENT; FERMIONS; LEPTONS; MATERIALS; MATHEMATICAL MODELS; NANOSTRUCTURES; ORIENTATION; PARTICLE MODELS; PARTICLE PROPERTIES; PHYSICAL PROPERTIES
Optional Information
- Notes
- (c) 2013 AIP Publishing LLC