High-temperature magnetic and optical properties of CdTe-MnTe superlattices
نویسندگان
چکیده
We present a study of magnetic and magneto-optical properties of CdxTe12x-MnTe superlattices up to the room temperature. A comparison of low-temperature exciton Zeeman effect and the measurements of the magnetization performed by superconducting quantum interface device magnetometer shows a perfect agreement with a model description, thus allowing for determination of Mn content profiles width throughout the structures. Precise high-temperature Zeeman effect measurements show that the exciton splitting decreases with temperature faster than expected on the basis of the Curie-Weiss law. We attribute this effect to the influence of thermal fluctuations on exciton states. @S0163-1829~99!05311-4#
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تاریخ انتشار 1999