Superconductivity, Magnetoresistance, Magnetic Anomaly and Crystal Structure of New Phases of Topological Insulators Bi2Se3and Sb2Te3

Kulbachinskii, V. A.; Буга, С. Г.; Serebryanaya, N. R.; Перов, Н. С.; Кытин, В. Г.; Тарелкин, С. А.; Баграмов, Р. Х.; Eliseev, N. N.; Бланк, В. Д.

doi:10.1088/1742-6596/969/1/012152

Cited by 4 publications

(5 citation statements)

References 16 publications

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“…This transition is often assigned to an electronic topological transition (i.e., a second order isostructural phase transition associated with the change of the Fermi energy surface topology), although recent reports suggest alternative mechanisms with no change of the electronic topology. , Additional layered polymorphs of Sb 2 Te 3 , Bi 2 Se 3 , and Bi 2 Te 3 can be accessed under both high pressure and temperature. At 4 GPa and 400–850 °C, α-Sb 2 Te 3 transitions to a structure of space group C 2/ m that resembles α-As 2 Te 3 . , Bi 2 Se 3 and Bi 2 Te 3 can adopt alternate structures belonging to the P 2 1 / m and R 3 m space groups, respectively, by quenching from 7.7 GPa and 400–1127 °C. , These polymorphs are metastable at ambient conditions and transition to α-Bi 2 Te 3 structure upon heating.…”

Section: Post-transition Metal Chalcogenidesmentioning

confidence: 98%

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Polymorphism in Post-Dichalcogenide Two-Dimensional Materials

2021

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Two-dimensional (2D) materials exhibit a wide range of atomic structures, compositions, and associated versatility of properties. Furthermore, for a given composition, a variety of different crystal structures (i.e., polymorphs) can be observed. Polymorphism in 2D materials presents a fertile landscape for designing novel architectures and imparting new functionalities. The objective of this Review is to identify the polymorphs of emerging 2D materials, describe their polymorph-dependent properties, and outline methods used for polymorph control. Since traditional 2D materials (e.g., graphene, hexagonal boron nitride, and transition metal dichalcogenides) have already been studied extensively, the focus here is on polymorphism in post-dichalcogenide 2D materials including group III, IV, and V elemental 2D materials, layered group III, IV, and V metal chalcogenides, and 2D transition metal halides. In addition to providing a comprehensive survey of recent experimental and theoretical literature, this Review identifies the most promising opportunities for future research including how 2D polymorph engineering can provide a pathway to materials by design.

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Section: Post-transition Metal Chalcogenidesmentioning

confidence: 98%

“…630,631 Bi 2 Se 3 and Bi 2 Te 3 can adopt alternate structures belonging to the P2 1 /m and R3m space groups, respectively, by quenching from 7.7 GPa and 400− 1127 °C. 632,633 These polymorphs are metastable at ambient conditions and transition to α-Bi 2 Te 3 structure upon heating.…”

Section: Structures and Properties Of 2d Group IV Metalmentioning

confidence: 99%

Polymorphism in Post-Dichalcogenide Two-Dimensional Materials

2021

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“…Since several phases, including the Pnma phase, have been synthesized for Bi 2 Se 3 , which usually crystallizes in the tetradymite-like R 3̄ m structure, 17–20 it is natural to wonder whether the R 3̄ m structure could be adopted by other sesquichalcogenides that generally adopt the U 2 S 3 -type structure, viz. Sb 2 S 3 , Bi 2 S 3 , and in particular Sb 2 Se 3 .…”

Section: Introductionmentioning

confidence: 99%

“…[6][7][8][9][10][11][12] Additionally, Sb 2 Se 3 has recently found a number of other applications including in solid-state batteries, fiber lasers, and photoelectrochemical devices. [13][14][15][16] Since several phases, including the Pnma phase, have been synthesized for Bi 2 Se 3 , which usually crystallizes in the tetradymite-like R% 3m structure, [17][18][19][20] it is natural to wonder whether the R% 3m structure could be adopted by other sesquichalcogenides that generally adopt the U 2 S 3 -type structure, viz. Sb 2 S 3 , Bi 2 S 3 , and in particular Sb 2 Se 3 .…”

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confidence: 99%

A theoretical study of thePnmaandR3̄mphases of Sb₂S₃, Bi₂S₃, and Sb₂Se₃

et al. 2022

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“…[6][7][8][9][10][11][12] Additionally, Sb 2 Se 3 has recently found a number of other applications including in solid-state batteries, fiber lasers, and photoelectrochemical devices. [13][14][15][16] Since several phases, including the Pnma phase, have been synthesized for Bi 2 Se 3 , which usually crystallizes in the tetradymitelike R-3m structure, [17][18][19][20] it is natural to wonder whether the R-3m structure could be adopted by other sesquichalcogenides that generally adopt the U 2 S 3 -type structure, viz. Sb 2 S 3 , Bi 2 S 3 , and in particular Sb 2 Se 3 .…”

Section: Introductionmentioning

confidence: 99%

Theoretical study of the stability of the tetradymite-like phases of Sb$_2$S$_3$, Bi$_2$S$_3$, and Sb$_2$Se$_3$

Silva¹,

Skelton²,

Rodríguez-Hernández³

et al. 2022

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We report a comparative theoretical study of the Pnma and R-3m phases of Sb 2 S 3 , Bi 2 S 3 , and Sb 2 Se 3 close to ambient pressure. Our enthalpy calculations at 0 K show that at ambient pressure the R-3m (tetradymite-like) phase of Sb 2 Se 3 is energetically more stable than the Pnma phase, contrary to what is observed for Sb 2 S 3 and Bi 2 S 3 , and irrespective of the exchange-correlation functional employed in the calculations. The result for Sb 2 Se 3 is in contradiction to experiments where all three compounds are usually grown in the Pnma phase. This result is further confirmed by free-energy calculations taking into account the temperature dependence of the unit-cell volumes and phonon frequencies. Lattice dynamics and elastic tensor calculations further show that both Pnma and R-3m phases of Sb 2 Se 3 are dynamically and mechanically stable at zero applied pressure. Since these results suggest that the formation of the R-3m phase for Sb 2 Se 3 should be feasible at close to ambient conditions, we provide a theoretical crystal structure and simulated Raman and infrared spectra to help in its identification. We also discuss the results of the two published works that have claimed to have synthesized tetradymite-like Sb 2 Se 3 . Finally, the stability of the R-3m phase across the three group-15 A 2 X 3 sesquichalcogenides is analysed based on their van der Waals gap and X-X in-plane geometry.

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Superconductivity, Magnetoresistance, Magnetic Anomaly and Crystal Structure of New Phases of Topological Insulators Bi₂Se₃and Sb₂Te₃

Cited by 4 publications

References 16 publications

Polymorphism in Post-Dichalcogenide Two-Dimensional Materials

Polymorphism in Post-Dichalcogenide Two-Dimensional Materials

A theoretical study of thePnmaandR3̄mphases of Sb₂S₃, Bi₂S₃, and Sb₂Se₃

Theoretical study of the stability of the tetradymite-like phases of Sb$_2$S$_3$, Bi$_2$S$_3$, and Sb$_2$Se$_3$

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Superconductivity, Magnetoresistance, Magnetic Anomaly and Crystal Structure of New Phases of Topological Insulators Bi2Se3and Sb2Te3

Cited by 4 publications

References 16 publications

Polymorphism in Post-Dichalcogenide Two-Dimensional Materials

Polymorphism in Post-Dichalcogenide Two-Dimensional Materials

A theoretical study of thePnmaandR3̄mphases of Sb2S3, Bi2S3, and Sb2Se3

Theoretical study of the stability of the tetradymite-like phases of Sb$_2$S$_3$, Bi$_2$S$_3$, and Sb$_2$Se$_3$

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Superconductivity, Magnetoresistance, Magnetic Anomaly and Crystal Structure of New Phases of Topological Insulators Bi₂Se₃and Sb₂Te₃

A theoretical study of thePnmaandR3̄mphases of Sb₂S₃, Bi₂S₃, and Sb₂Se₃