Antiferromagnetic and topological states in silicene: A mean field study

Liu, Feng; Liu, Cheng-Cheng; Yao, Yu Gui

doi:10.1088/1674-1056/24/8/087503

Cited by 4 publications

(4 citation statements)

References 46 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The mech anism of this pseudo-Lifshitz transition can be attributed to two interlayer hoppings rather than one. Additionally, the obtained TB parameters can be used in further study, for instance, the magneto-optical response of one-dimensional nanotubes and nanoribbons [25], the transport properties calculations of defected graphene [26], the essential ingredients of many-body models [27,28].…”

Section: Introductionmentioning

confidence: 99%

Tight-binding model for electronic structure of hexagonal boron phosphide monolayer and bilayer

Wang

Huang

et al. 2019

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

Graphene-like hexagonal boron phosphide with its moderate band gap and high carrier mobility is considered to be a high potential material for electronics and optoelectronics. In this work, the tight-binding Hamiltonian of hexagonal boron phosphide monolayer and bilayer with two stacking orders are derived in detail. Including up to fifth-nearest-neighbor in plane and next-nearest-neighbor interlayer hoppings, the tight-binding approximated band structure can well reproduce the first-principle calculations based on the screened Heyd–Scuseria–Ernzerhof hybrid functional level over the entire Brillouin zone. The band gap deviations for monolayer and bilayer between our tight-binding and first-principle results are only 2 meV. The low-energy effective Hamiltonian matrix and band structure are obtained by expanding the full band structure close to the K point. The results show that the iso-energetic lines of maximum valence band in the vicinity of K point undergo a pseudo-Lifshitz transition from h-BP monolayer to AB_B-P or AB_B-B bilayer. The mechanism of pseudo-Lifshitz transition can be attributed to two interlayer hoppings rather than one.

show abstract

Section: Introductionmentioning

confidence: 99%

Tight-binding model for electronic structure of hexagonal boron phosphide monolayer and bilayer

Wang

Huang

et al. 2019

J. Phys.: Condens. Matter

View full text Add to dashboard Cite

show abstract

“…Women's postpartum confinement has increasingly become a competitive field for the rights to make statements, claim power and earn capital. From a local knowledge perspective, the so-called universality of knowledge is a process of knowledge's standardization or generalization; that is, the process of a power struggle for knowledge (Liu, 2021). While recognizing this fact, one cannot devalue other knowledge-based traditions (including women's experiential knowledge traditions) in the name of science; nor can one deprive women practitioners of their choice among daily life practices in the name of science.…”

Section: Postpartum Confinement and The Diversity Of Scientific Culturementioning

confidence: 99%

On the diversity of scientific culture and the tradition of postpartum confinement in China

Zhang

2023

Cultures of Science

View full text Add to dashboard Cite

This paper observes the practice of postpartum confinement by urban women in China with high educational levels from the perspective of cognitive conception and behavioural practice. It reveals the cognitive conflict and self-adjustment in these women between ‘modern health notions’ and ‘traditional medical practices’, and analyses the rationality of the long-standing presence of and local differences in the practice as a traditional postpartum nursing behaviour for Chinese women. Moreover, this paper emphasizes the important value of postpartum confinement as a kind of local knowledge and holds that adhering to and advocating the locality and diversification of knowledge, including scientific knowledge, is conducive to the long-term coexistence and sustainable development of different knowledge traditions.

show abstract

“…According to the first principle calculations, when the Coulomb interaction is strong, the competition between different mass terms will lead to the emergence of a new topological phase such as spinpolarized quantum anomalous Hall state. When the Hubbard interaction strength U < 2.485 eV, the induced gap is so small that it is usually disregarded [31]. So our model is a single-particle model as we assume the electron-electron interaction is weak.…”

Section: Model and Formula -mentioning

confidence: 99%

Topology-transport correspondence in silicene under the modulation of electric and antiferromagnetic fields

Xu¹,

Li²

2020

EPL

View full text Add to dashboard Cite

The low-buckled material silicene undergoes abundant topological phase transitions under external fields. The applications in transport related to the topological properties remain the focus of attention. Utilizing the Berry curvature formula and Boltzmann transport equation, we investigate the spin- and valley-dependent anomalous Nernst effect in silicene, which is subjected to the antiferromagnetic field and perpendicular electric field. The results reveal that the antiferromagnetic field can be used to modulate the pure spin Nernst current; the pure valley Nernst current appears only when electric field exists; the charge Nernst current needs both fields. It is found that the inflection points on the Nernst conductivity correspond exactly to the phase transformation boundary. In the quantum spin Hall (QSH) phase, the spin beam splitting can be realized, in the quantum valley Hall (QVH) phase, the valley beam is split, and in the spin-polarized quantum anomalous Hall (SQAH) phase, the single spin and valley beam can be collected. These findings related to topology are expected to facilitate some applications in spin and valley caloritronics and thermal logical devices.

show abstract

Antiferromagnetic and topological states in silicene: A mean field study

Cited by 4 publications

References 46 publications

Tight-binding model for electronic structure of hexagonal boron phosphide monolayer and bilayer

Tight-binding model for electronic structure of hexagonal boron phosphide monolayer and bilayer

On the diversity of scientific culture and the tradition of postpartum confinement in China

Topology-transport correspondence in silicene under the modulation of electric and antiferromagnetic fields

Contact Info

Product

Resources

About