Strukturuntersuchungen in den mischungen PtTlPb und PtPbBi

Biswas, Tapasi; Schubert, K.

doi:10.1016/0022-5088(69)90099-x

Cited by 31 publications

(15 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1 (a) with lattice parameters: a=b=6.57 Å and c=6.16 Å [15]. The structure is centrosymmetric with an inversion centre at the midpoint of the shortest Bi-Bi bond in the primitive cell.…”

Section: Resultsmentioning

confidence: 98%

See 1 more Smart Citation

Bulk and surface electronic structure of hexagonal structuredPtBi2studied by angle-resolved photoemission spectroscopy

Yao

Yang

et al. 2016

Phys. Rev. B

View full text Add to dashboard Cite

PtBi 2 with a layered trigonal crystal structure was recently reported to exhibit an unconventional large linear magnetoresistance, while the mechanism involved is still elusive. Using high resolution angle-resolved photoemission spectroscopy, we present a systematic study on its bulk and surface electronic structure. Through careful comparison with first-principle calculations, our experiment distinguishes the low-lying bulk bands from entangled surface states, allowing the estimation of the real stoichiometry of samples. We find significant electron doping in PtBi 2 , implying a substantial Bi deficiency induced disorder therein. We discover a Dirac-cone-like surface state on the boundary of the Brillouin zone, which is identified as an accidental Dirac band without topological protection. Our findings exclude quantum-limit-induced linear band dispersion as the cause of the unconventional large linear magnetoresistance.

show abstract

“…1 (a) with lattice parameters: a=b=6.57 Å and c=6.16 Å [15]. The structure is centrosymmetric with an inversion centre at the midpoint of the shortest Bi-Bi bond in the primitive cell.…”

Section: Resultsmentioning

confidence: 98%

“…A vacuum spacing of 20 Å was used so that the interaction in the non-periodic directions could be neglected. The experimental lattice parameters were used [15]. We projected the band structure and Fermi surface to the first unit cell to get the surface electronic structure which fits the experimental band structure very well.…”

Section: Methodsmentioning

confidence: 99%

Bulk and surface electronic structure of hexagonal structuredPtBi2studied by angle-resolved photoemission spectroscopy

Yao

Yang

et al. 2016

Phys. Rev. B

View full text Add to dashboard Cite

show abstract

“…Above 45 8C up to the boiling point of the solvent (about 70 8C), the reductive decomposition of the subiodides yields the high-temperature phase Bi 2 Pt(hP9). [23][24][25][26] Furthermore, elemental bismuth is found as byproduct (Supporting Information, Figure S5); see equation (4): The product Bi 2 Pt(hP9) shows no straightforward structural analogy to the subiodides. Small single crystals of the binary intermetallic can be obtained in a cold crystallization process.…”

Section: Comprehensive Comparison Ofmentioning

confidence: 99%

Low‐Temperature Topochemical Transformation of Bi₁₃Pt₃I₇ into the New Layered Honeycomb Metal Bi₁₂Pt₃I₅

Kaiser¹,

Rasche²,

Isaeva³

et al. 2014

Chemistry A European J

View full text Add to dashboard Cite

Ordered single-crystals of the metallic subiodide Bi13 Pt3 I7 were grown and treated with n-butyllithium. At 45 °C, complete pseudomorphosis to Bi12 Pt3 I5 was achieved within two days. The new compound is air-stable and contains the same ${{{\hfill 2\atop \hfill \infty }}}$[(PtBi8/2 )3 I](n+) honeycomb nets and iodide layers as the starting material Bi13 Pt3 I7 , but does not include ${{{\hfill 1\atop \hfill \infty }}}$[BiI2 I4/2 ](-) iodidobismuthate strands. Electron microscopy and X-ray diffraction studies of solid intermediates visualize the process of the topochemical crystal-to-crystal transformation. In the electronic band structures of Bi13 Pt3 I7 and Bi12 Pt3 I5 , the vicinities of the Fermi levels are dominated by the intermetallic fragments. Upon the transformation of Bi13 Pt3 I7 into Bi12 Pt3 I5 , the intermetallic part is oxidized and the Fermi level is lowered by 0.16 eV. Whereas in Bi13 Pt3 I7 the intermetallic layers do not interact across the iodidobismuthate spacers (two-dimensional metal), they couple in Bi12 Pt3 I5 and form a three-dimensional metal.

show abstract

“…[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

View full text Add to dashboard Cite

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.

show abstract

Strukturuntersuchungen in den mischungen PtTlPb und PtPbBi

Cited by 31 publications

References 5 publications

Bulk and surface electronic structure of hexagonal structuredPtBi2studied by angle-resolved photoemission spectroscopy

Bulk and surface electronic structure of hexagonal structuredPtBi2studied by angle-resolved photoemission spectroscopy

Low‐Temperature Topochemical Transformation of Bi₁₃Pt₃I₇ into the New Layered Honeycomb Metal Bi₁₂Pt₃I₅

Phase stabilities at a glance: Stability diagrams of nickel dipnictides

Contact Info

Product

Resources

About

Strukturuntersuchungen in den mischungen PtTlPb und PtPbBi

Cited by 31 publications

References 5 publications

Bulk and surface electronic structure of hexagonal structuredPtBi2studied by angle-resolved photoemission spectroscopy

Bulk and surface electronic structure of hexagonal structuredPtBi2studied by angle-resolved photoemission spectroscopy

Low‐Temperature Topochemical Transformation of Bi13Pt3I7 into the New Layered Honeycomb Metal Bi12Pt3I5

Phase stabilities at a glance: Stability diagrams of nickel dipnictides

Contact Info

Product

Resources

About

Low‐Temperature Topochemical Transformation of Bi₁₃Pt₃I₇ into the New Layered Honeycomb Metal Bi₁₂Pt₃I₅