Optical verification of the valence band structure of cadmium arsenide

Gelten, MJ; Es, C.M. van; Blom, F.A.P.; Jongeneelen, J.W.F.

doi:10.1016/0038-1098(80)91199-0

Cited by 34 publications

(12 citation statements)

References 8 publications

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“…For Cd 3 P 2 the calculations performed within the zincblende approximation with use of the SETB method, led to a direct band gap of 0:53 eV [27]. This result is in good agreement with the optical data [13] and with the value obtained from Shubnikov-de Haas oscillations [14]. The experimental data confirm the existence of a direct energy gap in Cd 3 P 2 .…”

supporting

confidence: 85%

Energy Band Structure of Zn3P2-Type Semiconductors: Analysis of the Crystal Structure Simplifications and Energy Band Calculations

Andrzejewski

Misiewicz

2001

phys. stat. sol. (b)

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The simplifications of the Zn 3 P 2 -type crystal structure having tetragonal symmetry D 15 4h have been analysed. After description of the real unit cell the following simplifications are proposed: tetragonal symmetry (ideal and D 17 4h ), cubic symmetry and the correct molecular ratio (approximations O 9 h , T 7 h and O 4 h ) and finally the zincblende and antifluorite approximations. In the second part we present the results of energy band calculations for fully symmetric Zn 3 P 2 and for all the simplifications. The symmetry of bands is also determined for the full crystal structure and for the ideal approximation. In the calculations the nonlocal empirical pseudopotential method has been used.

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supporting

confidence: 85%

Energy Band Structure of Zn3P2-Type Semiconductors: Analysis of the Crystal Structure Simplifications and Energy Band Calculations

Andrzejewski

Misiewicz

2001

phys. stat. sol. (b)

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“…Further series of optical and magneto-optical Cd 3 As 2 studies were performed on various mono-or polycrystalline samples during the seventies and eighties. The collected data was primarily analyzed within the framework of the Kane model [13,61,[85][86][87], and later on the Bodnar model [88,89,91]. The authors of these works concluded that the electronic band structure at the Γ point is fairly well described using these models: it is inverted, with the p-type arsenic states above the s-like cadmium states, and characterized by a relatively small negative band gap.…”

Section: Optical Propertiesmentioning

confidence: 99%

3D Dirac semimetal Cd3As2 : A review of material properties

Crassee

Sankar

Lee

et al. 2018

Phys. Rev. Materials

103

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Cadmium arsenide (Cd3As2) -a time-honored and widely explored material in solid-state physics -has recently attracted considerable attention. This was triggered by a theoretical prediction concerning the presence of 3D symmetry-protected massless Dirac electrons, which could turn Cd3As2 into a 3D analogue of graphene. Subsequent extended experimental studies have provided us with compelling experimental evidence of conical bands in this system, and revealed a number of interesting properties and phenomena. At the same time, some of the material properties remain the subject of vast discussions despite recent intensive experimental and theoretical efforts, which may hinder the progress in understanding and applications of this appealing material. In this review, we focus on the basic material parameters and properties of Cd3As2, in particular those which are directly related to the conical features in the electronic band structure of this material. The outcome of experimental investigations, performed on Cd3As2 using various spectroscopic and transport techniques within the past sixty years, is compared with theoretical studies. These theoretical works gave us not only simplified effective models, but more recently, also the electronic band structure calculated numerically using ab initio methods.

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“…In Cd3As 2 the effective mass is dependent on the carrier concentration. In our calculations we have taken the numerical results for the effective mass of [2] and [13]. In our calculation the actual carrier concentration profile is replaced by a large number (typically I00) of uniform layers.…”

Section: Theoretical Modelmentioning

confidence: 99%