scholarly journals Weyl Point and Nontrivial Surface States in a Helical Topological Material

2022 ◽  
Vol 8 ◽  
Author(s):  
Meize Li ◽  
Yahong Liu ◽  
Lianlian Du ◽  
Xin Zhou ◽  
Kun Song ◽  
...  
Keyword(s):  
Physical Properties ◽  
Surface States ◽  
Microwave Frequency ◽  
Unique Function ◽  
Two Dimensional ◽  
Left Handed

Topological material has been widely studied in recent years because of excellent physical properties. In this paper, a Weyl topological material composed of the double left-handed helixes is presented. It is demonstrated that the proposed structure possesses a two-dimensional complete topological nontrivial bandgap for a fixed kz in the microwave frequency, and the robust surface states are observed. This unique function provides a promising platform for the development of photonics and electromagnetics.

Two-dimensional topological insulators exfoliated from Na3Bi-like Dirac semimetals

2021 ◽  
Author(s):  
Xiaoqiu Guo ◽  
Ruixin Yu ◽  
Jingwen Jiang ◽  
Zhuang Ma ◽  
Xiuwen Zhang
Keyword(s):  
Physical Properties ◽  
Epitaxial Growth ◽  
Topological Insulators ◽  
2D Materials ◽  
Van Der Waals ◽  
Two Dimensional ◽  
Dirac Semimetals

Topological insulation is widely predicted in two-dimensional (2D) materials realized by epitaxial growth or van der Waals (vdW) exfoliation. Such 2D topological insulators (TI’s) host many interesting physical properties such...

Multiband left handed biaxial meta atom at microwave frequency

2017 ◽  
Vol 4 (3) ◽  
pp. 035015 ◽  
Author(s):  
Md Mehedi Hasan ◽  
Mohammad Rashed Iqbal Faruque ◽  
Mohammad Tariqul Islam
Keyword(s):  
Microwave Frequency ◽  
Left Handed ◽  
Meta Atom

scholarly journals Covalent assembly of a two-dimensional molecular “sponge” on a Cu(111) surface: confined electronic surface states in open and closed pores

2014 ◽  
Vol 50 (57) ◽  
pp. 7628-7631 ◽  
Author(s):  
Aneliia Shchyrba ◽  
Susanne C. Martens ◽  
Christian Wäckerlin ◽  
Manfred Matena ◽  
Toni Ivas ◽  
...  
Keyword(s):  
Surface States ◽  
Two Dimensional ◽  
New Class ◽  
Trimesic Acid ◽  
Electronic Surface

We present a new class of on-surface covalent reactions, formed between diborylene-3,4,9,10-tetraaminoperylene and trimesic acid on Cu(111), which gives rise to a porous 2D-‘sponge’.

scholarly journals Study of the field emitted by a source placed inside a two-dimensional left-handed metamaterial

2007 ◽  
Vol 32 (7) ◽  
pp. 850 ◽  
Author(s):  
Irfan Bulu ◽  
Humeyra Caglayan ◽  
Koray Aydin ◽  
Ekmel Ozbay
Keyword(s):  
Two Dimensional ◽  
Left Handed

scholarly journals Хаотический потенциал заряженных дислокаций в гетероконтактах III-нитридов

2021 ◽  
Vol 47 (1) ◽  
pp. 12
Author(s):  
В.Б. Бондаренко ◽  
А.В. Филимонов ◽  
Ravi Kumar
Keyword(s):  
Electrostatic Field ◽  
Dielectric Response ◽  
Spatial Dispersion ◽  
Electron Gas ◽  
Surface States ◽  
Two Dimensional ◽  
Dimensional Electron ◽  
Two Dimensional Electron Gas ◽  
Contact Plane ◽  
Dimensional Electron Gas

In this work, the structure of the chaotic potential in heterocontacts of III-nitrides, caused by the electrostatic field of charged dislocations, is studied. Taking into account the spatial dispersion of the dielectric response of a two-dimensional electron gas, the amplitude and scale of the chaotic potential in the contact plane are determined. The dependence of the parameters of the chaotic potential on the surface states density and the concentration of dislocations is shown.

scholarly journals Two dimensional semiconducting polymers

2020 ◽  
Vol 4 (12) ◽  
pp. 3472-3486
Author(s):  
Xin Wei ◽  
Mingfeng Wang
Keyword(s):  
Physical Properties ◽  
Semiconducting Polymers ◽  
Synthetic Chemistry ◽  
Two Dimensional ◽  
Unique Chemical

Synthetic chemistry towards two-dimensional semiconducting polymers (2DSPs) with planar π-conjugated structures is reviewed and their unique chemical and physical properties derived from the extended π-conjugation are discussed.

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