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Exchange interaction constants in CdCoSe diluted magnetic semiconductors (1994)

Stankiewicz, Jolanta ; Palacio, Fernando ; Campo, Javier

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 75 (1994), S. 4628-4631

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: The photoconductivity of diluted magnetic semiconductors Cd1−xCoxSe (0.011≤x≤0.041) has been measured at temperature of 1.6 K and in a magnetic field up to 6 T. The photocurrent spectra show two peaks near the band-gap energy. They shift towards lower energies as the magnetic field intensity is increased. We interpret these lines in terms of free-exciton (exciton A and B) dissociation. The large values of the observed shift arise from exchange interactions. A comparision of this shift with magnetization measurements done on the same samples allows us to estimate the exchange integrals for the CdCoSe system.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.355911

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