On the Arsenides and Antimonides of Tantalum.

Furuseth, Sigrid; Selte, Kari; Kjekshus, Arne; Gronowitz, Salo; Hoffman, Ragnar A.; Westerdahl, Anders

doi:10.3891/acta.chem.scand.19-0095

Cited by 95 publications

(78 citation statements)

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“…1b. There are four TaAs layers in a unit cell along the c-direction, forming a repeating · · · -A-B-C-D-· · · stacking structure 23 without inversion symmetry (Fig. 1b).…”

mentioning

confidence: 99%

Weyl semimetal phase in the non-centrosymmetric compound TaAs

et al. 2015

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“…1b. There are four TaAs layers in a unit cell along the c-direction, forming a repeating · · · -A-B-C-D-· · · stacking structure 23 without inversion symmetry (Fig. 1b).…”

mentioning

confidence: 99%

Weyl semimetal phase in the non-centrosymmetric compound TaAs

et al. 2015

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“…[38][39][40][41][42][43][44][45][46][47] Actually, the discovery of novel dinitride compounds was successful recently (OsN 2 , IrN 2 , PtN 2 ) [38][39][40]48 -driven by promising properties like hardness or superconductivity. This situation is seen as a starting point for the question on the prediction of the relative stability of known and unknown compounds and structures with respect to possible polymorphs and the decomposition into more stable products.…”

Section: Introductionmentioning

confidence: 99%

Phase stabilities at a glance: Stability diagrams of nickel dipnictides

Bachhuber

Rothballer

Sohnel

et al. 2013

The Journal of Chemical Physics

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In the course of the recent advances in chemical structure prediction, a straightforward type of diagram to evaluate phase stabilities is presented based on an expedient example. Crystal structures and energetic stabilities of dipnictides NiPn2 (Pn = N, P, As, Sb, Bi) are systematically investigated by first principles calculations within the framework of density functional theory using the generalized gradient approximation to treat exchange and correlation. These dipnictides show remarkable polymorphism that is not yet understood systematically and offers room for the discovery of new phases. Relationships between the concerned structures including the marcasite, the pyrite, the arsenopyrite/CoSb2, and the NiAs2 types are highlighted by means of common structural fragments. Electronic stabilities of experimentally known and related AB2 structure types are presented graphically in so-called stability diagrams. Additionally, competing binary phases are taken into consideration in the diagrams to evaluate the stabilities of the title compounds with respect to decomposition. The main purpose of the stability diagrams is the introduction of an image that enables the estimation of phase stabilities at a single glance. Beyond that, some of the energetically favored structure types can be identified as potential new phases.

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“…This structure was first reported in a centrosymmetric space group of I4 1 /amd for Nb(Ta)P in 1954 [2]. After a decade, the two arsenide siblings joined in and the structure for all four was corrected to a non-centrosymmetric group of I4 1 md [3][4][5][6]. This structure can be visualized as an arrangement of regular trigonal prisms of Nb/Ta atoms with a P/As atom at the center [ Fig.…”

Section: Introductionmentioning

confidence: 87%

Crystal growth and electrical transport properties of niobium and tantalum monopnictide and dipnictide semimetals

Jia

2017

Front. Phys.

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The discovery of the first Weyl semimetal tantalum monoarsenide has greatly promoted physical research on the niobium and tantalum pnictide compounds. Crystallizing into the NbAs-and OsGe 2 -type structures, these mono-and di-pnictide semimetals manifest exotic electrical transport properties in magnetic field, which only occur in their single-crystalline forms. All the unusual electrical properties correspond to their poor carriers, which are indeed vulnerable to various crystal defects. In this review article, we present a comprehensive comparison of the crystal growth and electrical transport properties of the two semimetal families. We then discuss in detail the possible characteristic transport features, such as the chiral anomaly of Weyl quasiparticles. We emphasize the importance of crystal growth and sample manipulation for exploring the unique topological properties of Weyl semimetals in the future.

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On the Arsenides and Antimonides of Tantalum.

Cited by 95 publications

References 0 publications

Weyl semimetal phase in the non-centrosymmetric compound TaAs

Weyl semimetal phase in the non-centrosymmetric compound TaAs

Phase stabilities at a glance: Stability diagrams of nickel dipnictides

Crystal growth and electrical transport properties of niobium and tantalum monopnictide and dipnictide semimetals

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