Negative magnetoresistance of n-type compensated cadmium arsenide (CdAs2) in the temperature range 11 K - 4.2 K

Negative Magnetoresistance Behaviour and Variable Range Hopping Conduction in Insulating NbSi Amorphous Alloys at Very Low Temperature with aagnetic Field

“…The model of localized moments for negative MR has been previously tested successfully on metallic InP [41], insulating CdAs 2 [42] and Al-doped ZnO metallic thin films [43] samples. In these materials, the theoretical model is very consistent with experience and the effec-tive magnetic moment values are included in the range defined by Toyozawa.…”

A simple chemical guide for finding novel n-type dopable Zintl pnictide thermoelectric materials

“…Available experimental reports confirm that self-doped CdAs 2 is indeed an n-type material with ⇠10 17 cm 3 free electron concentration. 37 It is also possible to realize p-type CdAs 2 via extrinsic doping because the formation energies of compensating donors, V As and antisite As Cd at the valence band maximum (VBM) under Cd-poor growth conditions are also relatively high.…”

“…In this section, we present the computed defect energetics of two Zintl pnictides that are known to be n-type dopable: (1) KGaSb 4 , which has been experimentally confirmed to be extrinsically dopable n-type with Ba, 24 and (2) CdAs 2 , an n-type Zintl with low electron concentrations in selfdoped samples. 37 The calculated defect diagrams along with the crystal structures are shown in Figure 3. KGaSb 4 possess a tunnel-like structure formed by the anionic framework of GaSb 4 tetrahedra that are linked by Sb-Sb bonds (Figure 3a).…”

Fermiology of Chiral Cadmium Diarsenide CdAs2, a Candidate for Hosting Kramers–Weyl Fermions

“…22,23 As such, understanding the electronic structure of these compounds is of paramount importance, especially given the evident potential for technological applications in spintronics and optics. 11 In this study, we investigate the electronic structure of the newly reported 24,25 chiral material CdAs 2 using synchrotronbased angle-resolved photoelectron spectroscopy (ARPES), density functional theory (DFT), and transport experiments, shedding light on the details of the Fermi surface and topology for this chiral quantum material. Our findings suggest that CdAs 2 is a promising candidate for enabling novel topological properties protected by its structural chirality, offering useful information for the development of disruptive spintronic and optical devices based on quantized chiral charges, negative longitudinal magnetoresistance, and nontrivial Chern numbers.…”