Anisotropy of the electronic g∗-factor in cadmium arsenide

Blom, F.A.P.; Cremers, Jonathan; Neve, J.J.; Gelten, MJ

doi:10.1016/0038-1098(80)90698-5

Cited by 41 publications

(4 citation statements)

References 9 publications

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“…A weak deviation from the ideal non-trivial Berry phase, β = (0.8 − 0.9)π was reported by Narayanan [104], who also discussed the influence of Zeeman splitting on the phase of quantum oscillations [115]. Notably, the electron g-factor in Cd 3 As 2 is relatively large and anisotropic, and it implies Zeeman splitting comparable to the cyclotron energy [16,116].…”

Section: Magneto-transport Properties and Quantum Oscillationsmentioning

confidence: 89%

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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Section: Magneto-transport Properties and Quantum Oscillationsmentioning

confidence: 89%

3D Dirac semimetal Cd3As2 : A review of material properties

Crassee

Sankar

Lee

et al. 2018

Phys. Rev. Materials

103

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show abstract

“…When the magnetic field is parallel to the (112) plane, the surface Fermi arc states have no effect on the SdH oscillations. Moreover, previous experimental studies have revealed the anisotropic g factor in Cd 3 As 2 with larger g factor along the [001] direction [32]. However, this larger Zeeman coupling along the [001] direction cannot lead to the anomalous SdH oscillation when the magnetic field is along the ½110 direction.…”

Section: Theoretical Analysismentioning

confidence: 99%

Anisotropic Fermi Surface and Quantum Limit Transport in High Mobility Three-Dimensional Dirac SemimetalCd3As2

et al. 2015

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Three-dimensional topological Dirac semimetals have a linear dispersion in 3D momentum space and are viewed as the 3D analogues of graphene. Here, we report angle-dependent magnetotransport on the newly revealed Cd 3 As 2 single crystals and clearly show how the Fermi surface evolves with crystallographic orientations. Remarkably, when the magnetic field lies in the [112] or ½441 axis, magnetoresistance oscillations with only single period are present. However, the oscillation shows double periods when the field is applied along the ½110 direction. Moreover, aligning the magnetic field at certain directions also gives rise to double period oscillations. We attribute the observed anomalous oscillation behavior to the sophisticated geometry of Fermi surface and illustrate a complete 3D Fermi surface with two nested anisotropic ellipsoids around the Dirac points. Additionally, a submillimeter mean-free path at 6 K is found in Cd 3 As 2 crystals, indicating ballistic transport in this material. By measuring the magnetoresistance up to 60 T, we reach the quantum limit (n ¼ 1 Landau level) at about 43 T. These results improve the knowledge of the Dirac semimetal material Cd 3 As 2 and also pave the way for proposing new electronic applications based on 3D Dirac materials.

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“…For example, for ν b = 3 (Figure a), the increase of G D for ν g = −1 corresponds to equilibration between the back-reflected channel and the localized hole-like channel, as illustrated in Figure e. Notably, this mixing indicates a lack of spin-selectivity, as the equilibrating channels have opposite spin polarization, which is a departure from findings in other material systems. ,, In general, spin-flip transitions may be facilitated by spin-orbit interaction, ,− which is strong in Cd 3 As 2 . , For this scenario, the expected quantitative values of G D under inversion for our device geometry have been determined in prior work to be G normalD N normalb , N normalg , N normalQ normalP normalC = ∑ σ = ↑ , ↓ G D N b , N g , N Q P C = e 2 h ∑ σ = false↑ , false↓ false| N b σ false| 2 false| N normalb σ false| false| N normalg σ false| + N…”

mentioning

confidence: 86%

Edge Channel Transmission through a Quantum Point Contact in the Two-Dimensional Topological Insulator Cadmium Arsenide

et al. 2023

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Cadmium arsenide (Cd 3 As 2 ) thin films feature a two-dimensional topological insulator (2D TI) phase for certain thicknesses, which theoretically hosts a set of counterpropagating helical edge statesA bar has been added to each symbol of the high-symmetry points of Cu(100) and Cu(111). The bar indicates the surface projected Brillouin zone. that are characteristic of a quantum spin Hall (QSH) insulator. In devices containing electrostatically defined junctions and for magnetic fields below a critical value, chiral edge modes of the quantum Hall effect can coexist with QSH-like edge modes. In this work, we use a quantum point contact (QPC) device to characterize edge modes in the 2D TI phase of Cd 3 As 2 and to understand how they can be controllably transmitted, which is important for use in future quantum interference devices. We investigate equilibration among both types of modes and find non-spin-selective equilibration. We also demonstrate the effect of the magnetic field on suppressing equilibration. We discuss the potential role of QSH-like modes in a transmission pathway that precludes full pinch-off.

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Anisotropy of the electronic g∗-factor in cadmium arsenide

Cited by 41 publications

References 9 publications

3D Dirac semimetal Cd3As2 : A review of material properties

3D Dirac semimetal Cd3As2 : A review of material properties

Anisotropic Fermi Surface and Quantum Limit Transport in High Mobility Three-Dimensional Dirac SemimetalCd3As2

Edge Channel Transmission through a Quantum Point Contact in the Two-Dimensional Topological Insulator Cadmium Arsenide

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