Low-temperature specific heat in Hg_0.88Zn_0.12Te

Abstract

Specific heat measurements have been performed on Hg,,,Zn,,,Te at low temperatures. C, experimental results can be described by the interpolation of t h e Cvs of the end binaries HgTe and ZnTe, A comparison with results on HgCdTe show that the 0 K Debye temperature of HgZnTe is higher than that of HgCdTe having,the same energy gap. Experimental C, results can be modelled with a simple phonon density of states in these mixed crystals.

P-to-n conversion in

“…The main forecasted advantage of this ternary compound is a higher compositional stability due to the bond length difference between HgTe and ZnTe [1]. This better stability has been confirmed through numerous experiments covering the interdiffusion coefficient [2], the low-temperature specific heat [3], the thermal expansion coefficient [4] and the infrared reflectivity [5]. On the other hand, detectors elaborated with MZT have performances comparable to MCT ones with device lifetime before failure improved under high-temperature tests [6].…”

A comparison of force constants, mechanical and thermal properties in Hg1−xCdxTe and Hg1−xZnxTe mixed crystals

“…An average of the elastic constants controls the specific heat C, at low temperature. This parameter has been measured in MCT in the whole composition range [28] but only for one Hg-rich composition in MZT [29]. The known experimental results show that C, can be interpolated from the values of the end binaries HgTe and ATe,…”