Two-probe systems of transition metal atom (X)-encapsulated B₄₀fullerene contacted with Au electrodes, where X = Fe, Mn, Ni, and Co.

Simultaneous switches of out-of-plane and in-plane ferroelectric polarizations by sliding, as well as the moiré effect, are observed in Janus bilayer MoSSe.

The bandgap of two-faced monolayer O _n/8 MoTe _2−n/8 decreases progressively as n increases from left to right, and finally converts to metallic.

Spin caloritronic devices based on magnetic graphether nanoribbons exhibit a robust spin-dependent Seebeck effect and a remarkable spin thermoelectric performance, including a high spin Seebeck coefficient and a giant spin figure of merit.

The spin-Seebeck effect (SSE) in linearly hydrogenated carbon nanotubes (CNTs) is realized, where partial hydrogenation makes CNTs acquire magnetism. Moreover, an odd–even effect of the SSE is observed, and the even cases could be used as spin-Seebeck diodes, without the need for an electric field or gate voltage.

Compared with the conventional magnetic means (such as ferromagnetic contacts), controlling a spin current by electrical methods could largely reduce the energy consumption and dimensions of nano-devices, which has become a focus of research in spintronics. Inspired by recent progress in the synthesis of an iron-based metal–organic nanostructure, we investigate the spin-dependent electronic transport of the molecule of Fe₃–terpyridine-phenyl-phenyl-terpyridine–Fe₃ (Fe₃–TPPT–Fe₃) through first-principles calculations, and propose a three-terminal device without ferromagnetics. By applying a gate voltage, not only the spin polarization can be switched between 100% and −100% to achieve a dual-spin filter, but also its fine regulation can be realized, where the transmission with any ratio of spin-up to spin-down electron numbers is achievable. Analysis shows that the particular transmission spectra are the key mechanism, where two peaks reside discretely on both sides of the Fermi level with opposite spins. Such a feature is found to be robust to the number of Fe atoms and TPPT chain length, suggesting that it is an intrinsic feature of such systems and very conducive to practical applications. The electrical control (such as an electric field) of spin polarization is realized at the single-molecule level, showing great application potential.