Density Functional Theory Study of the Spin–Orbit Insulating Phase in SnTe Cubic Nanowires: Implications for Topological Electronics DOI Creative Commons
Ghulam Hussain,

Kinga Warda,

Giuseppe Cuono

и другие.

ACS Applied Nano Materials, Год журнала: 2024, Номер 7(7), С. 8044 - 8052

Опубликована: Март 27, 2024

We investigate the electronic, structural, and topological properties of SnTe PbTe cubic nanowires using ab initio calculations. Using standard linear-scale density functional theory, we go from ultrathin limit up to nanowire thicknesses observed experimentally. Finite-size effects in produce an electric quadrupole associated structural distortions; these distortions increase band gap, but they get reduced with size become less relevant. Ultrathin are trivial gap insulators; demonstrate that by increasing thickness, there is electronic transition a spin–orbit insulating phase due surface states regime thin nanowires. These few meV appear at same k-point states. Going thick nanowires, should observe crystalline insulator presence two massive Dirac fermions hybridized persistent Therefore, have copresence close Fermi level region k-space. According our estimation, insulators below critical thickness tc1 = 10 nm, between nm tc2 17 while transit above nm. values range typical experimental thicknesses, making relevant parameter for synthesis Pb1–xSnxTe would both larger depending on doping concentration. discuss limitations theory context consequences results electronics.

Язык: Английский

Above room temperature TC, 100% spin-polarization, and a high thermoelectric response in the ordered CaCu3 DOI

H.M.W. Safdar,

Sohail Mumtaz,

Ihab Mohamed Moussa

и другие.

Physica B Condensed Matter, Год журнала: 2025, Номер unknown, С. 417149 - 417149

Опубликована: Март 1, 2025

Язык: Английский

Процитировано

2
Ferroelectricity‐Tuned Band Topology and Superconductivity in 2D Materials and Related Heterostructures DOI
Jianyong Chen, Ping Cui, Zhenyu Zhang

и другие.

Advanced Functional Materials, Год журнала: 2024, Номер 34(48)

Опубликована: Авг. 19, 2024

Abstract Ferroelectricity, band topology, and superconductivity are respectively local, global, macroscopic properties of quantum materials, understanding their mutual couplings offers unique opportunities for exploring rich physics enhanced functionalities. In this mini‐review, the attempt is to highlight some latest advances in vibrant area, focusing particular on ferroelectricity‐tuned topology 2D materials related heterostructures. First, results from predictive studies delicate between ferroelectricity or based first‐principles calculations phenomenological modeling presented, with ferroelectricity‐enabled topological as an appealing objective. Next, experimental different van der Waals heterostructures covered. Finally, perspectives, schemes outlined that may allow materialize new types systems simultaneously harbor superconductivity, lead ferroelectric superconducting devices such diodes.

Язык: Английский

Процитировано

7
Flat band and its related topological states in the double halide perovskites A2CuSbM6 (A = K, Rb, Cs; M = Cl, Br, I) DOI
Shoubing Ding, Shiwei Zhang, Ying Liu

и другие.

Applied Materials Today, Год журнала: 2025, Номер 43, С. 102644 - 102644

Опубликована: Фев. 20, 2025

Язык: Английский

Процитировано

1
Generic approach for integrating ferroelectricity and superconductivity into a single two-dimensional monolayer DOI
Jianyong Chen, Wen‐Yi Tong, Ping Cui

и другие.

Physical review. B./Physical review. B, Год журнала: 2025, Номер 111(9)

Опубликована: Март 17, 2025

Язык: Английский

Процитировано

0
Density Functional Theory Study of the Spin–Orbit Insulating Phase in SnTe Cubic Nanowires: Implications for Topological Electronics DOI Creative Commons
Ghulam Hussain,

Kinga Warda,

Giuseppe Cuono

и другие.

ACS Applied Nano Materials, Год журнала: 2024, Номер 7(7), С. 8044 - 8052

Опубликована: Март 27, 2024

We investigate the electronic, structural, and topological properties of SnTe PbTe cubic nanowires using ab initio calculations. Using standard linear-scale density functional theory, we go from ultrathin limit up to nanowire thicknesses observed experimentally. Finite-size effects in produce an electric quadrupole associated structural distortions; these distortions increase band gap, but they get reduced with size become less relevant. Ultrathin are trivial gap insulators; demonstrate that by increasing thickness, there is electronic transition a spin–orbit insulating phase due surface states regime thin nanowires. These few meV appear at same k-point states. Going thick nanowires, should observe crystalline insulator presence two massive Dirac fermions hybridized persistent Therefore, have copresence close Fermi level region k-space. According our estimation, insulators below critical thickness tc1 = 10 nm, between nm tc2 17 while transit above nm. values range typical experimental thicknesses, making relevant parameter for synthesis Pb1–xSnxTe would both larger depending on doping concentration. discuss limitations theory context consequences results electronics.

Язык: Английский

Процитировано

2