Pressure effect on magneto-optical properties in CdTe/(Cd, Mn)Te single quantum wells with high Mn concentration

Journal Article · Thu Apr 01 00:00:00 EST 1999 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.369996· OSTI ID:336648

Yokoi, H ^[1]; Tozer, S W ^[2]; Kim, Y; Rickel, D ^[1]; Kakudate, Y; Usuba, S; Fujiwara, S ^[3]; Takeyama, S ^[4]; Karczewski, G; Wojtowicz, T; Kossut, J ^[5]

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1. National High Magnetic Field Laboratory, LANL, MS E-536, Los Alamos, New Mexico 87545 (United States)
2. National High Magnetic Field Laboratory, Florida State University, 1800 E. Paul Dirac Drive, Tallahassee, Florida 32306-2740 (United States)
3. National Institute of Materials and Chemical Research, 1-1 Higashi, Tsukuba, Ibaraki 305-8565 (Japan)
4. Faculty of Science, Himeji Institute of Technology, 1479-1 Kanaji, Kamigori, Ako-gun, Hyogo 678-1297 (Japan)
5. Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, Warsaw 02-668 (Poland)

The pressure effect on the magnetic field induced type I{endash}type II transition is studied in a CdTe/Cd{sub 1{minus}x}Mn{sub x}Te (x=0.24) single quantum well. Photoluminescence measurements under hydrostatic pressures up to 1.07 GPa and long pulsed magnetic fields up to 60 T with a pulse duration of 2 s are reported. The pressures were generated in a plastic diamond anvil cell. A bend toward lower energies (additional red shift) is observed above 28.5 T in magnetic field dependence of the exciton energy for a 13 {Angstrom} thick quantum well. We attribute this red shift to a phenomenon preceding the type I{endash}type II transition after a comparison with a simple quantum mechanical calculation. The onset field of the additional red shift increases by 3.4 T by applying a pressure of 1.07 GPa. Spin{endash}spin coupling between the exciton and the Mn ion in the interface region is also investigated and found to be enhanced by pressure. {copyright} {ital 1999 American Institute of Physics.}

• OSTI ID: 336648
• Journal Information: Journal of Applied Physics, Vol. 85, Issue 8; Other Information: PBD: Apr 1999
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CADMIUM COMPOUNDS
MANGANESE COMPOUNDS
CADMIUM TELLURIDES
MANGANESE TELLURIDES
MAGNETO-OPTICAL EFFECTS
PRESSURE DEPENDENCE
ELECTRONIC STRUCTURE
VERY HIGH PRESSURE
PHOTOLUMINESCENCE
EXCITONS
RED SHIFT