Metallization in the molten and solid state and phase diagrams of the GeSe2 and GeS2 under high pressure

A Brief Analysis of Changchun Jilin Tourism Integration

“…As for the non-centrosymmetric non-magnetic semiconductors, a k-dependent effective magnetic field B eff (k) is emerged because of the spin-orbit coupling (SOC) [25,26]. Such a field couples with electron's spin via B eff (k) • σ [25] and yields, e.g., Rashba-/Dresselhaustype spin splittings [27,28], where σ ≡ (σ x , σ y , σ z ) is the vector formed by Pauli matrix σ α (α = x, y, z). In other words, the +S α and −S α levels become nondegenerate at some non-zero k [see Fig.…”

Hexagonal warping effect in the Janus group-VIA binary monolayers with large Rashba spin splitting and piezoelectricity

“…21,22 As a consequence, these Janus systems are ideal candidate materials for spintronics and valleytronics. Therefore, modifying conventional centrosymmetric 2D materials to form Janus structures is an effective method to generate a piezoelectric response, 23,24 RSS, 20 and valley polarization. 21,22 In recent years, a new family of 2D materials, group-VIA elemental 2D materials, with high carrier mobility, high photoconductivity, thermoelectricity, and piezoelectricity 23,25 have appeared in people's field of vision.…”

“…On the one hand, due to the broken inversion symmetry and out-of-plane mirror symmetry, these Janus TMD monolayers exhibit large out-of-plane piezoelectricity. 8 On the other hand, the strong spin–orbit coupling (SOC) effect in these noncentrosymmetric Janus TMDs will lead to spin splitting of the energy band, resulting in Rashba spin splitting (RSS) 20 and valley polarization. 21,22 As a consequence, these Janus systems are ideal candidate materials for spintronics and valleytronics.…”

“…21,22 As a consequence, these Janus systems are ideal candidate materials for spintronics and valleytronics. Therefore, modifying conventional centrosymmetric 2D materials to form Janus structures is an effective method to generate a piezoelectric response, 23,24 RSS, 20 and valley polarization. 21,22…”

6p valence relativistic effects in 5d photoemission spectrum of Pb atom and bonding properties of Pb-dimer using Dirac–Hartree–Fock formalism including many-body effects

“…31 Those authors had carried out firstprinciples calculations of Pb doping into defective graphene by adsorbing monomeric and dimeric lead, and extracting the charge transferred to the carbon network. Spin-orbit coupling was introduced using a relativistic density-functional theory calculation, which was found to cause a fivefold increase of the Bychkov-Rashba parameter (α R ) 32 for Pb atom, compared to the Sn atom, which is in the same group but one row above Pb in the periodic table.…”