搜索结果: 1-15 共查到“超导物理学 Graphene”相关记录23条 . 查询时间(0.09 秒)
Study: Superconductivity switches on and off in “magic-angle” graphene（图）
超导 “魔角”石墨烯 超导电子产品
2023/6/8
With some careful twisting and stacking, MIT physicists have revealed a new and exotic property in “magic-angle” graphene: superconductivity that can be turned on and off with an electric pulse, much ...
Physicists discover a “family” of robust, superconducting graphene structures（图）
超导 石墨烯 结构“家族” 超导器件
2023/6/8
When it comes to graphene, it appears that superconductivity runs in the family.
“Magic-angle” trilayer graphene may be a rare, magnet-proof superconductor（图）
三层石墨烯 防磁超导体 MRI机器 量子计算机
2023/6/7
MIT physicists have observed signs of a rare type of superconductivity in a material called magic-angle twisted trilayer graphene. In a study appearing today in Nature, the researchers report that the...
We present a technique to fabricate tunnel junctions between graphene and Al and Cu, with a Si back gate, as well as a simple theory of tunneling between a metal and graphene.
Carrier heating and high-order harmonics generation in doped graphene by a strong ac electric field
Carrier heating high-order harmonics generation strong ac electric field
2010/11/25
The nonlinear response of electrons (holes) in doped graphene on ac pumping is concidered the-
oretically for the frequency region above the energy relaxation rate but below the momentum and
carrier...
Sensory Organ like Response of Zigzag Edge Graphene Nanoribbons
Sensory Organ Zigzag Edge Graphene Nanoribbons
2010/11/25
Using a continuum Dirac theory, we study the density and spin response of zigzag edge erminated
graphene ribbons subjected to edge potentials and Zeeman fields. Our analytical calculations of the den...
Nobel Prize in Physics 2010 was given for “groundbreaking experiments regarding the two-dimensional material graphene.” In fact, before graphene has been extracted from graphite and measured, some of ...
Magnetoresistivity and Hole-effect were theoretically investigated for neutral and gated graphene. It is shown that in neutral graphene Hall-effect is totally absent. In gated, exactly monopolar graph...
Energy gaps in graphene nano-constrictions with different aspect ratios
Energy gaps graphene nano-constrictions different aspect ratios
2010/11/19
We present electron transport measurements on lithographically defined and etched graphene
nano-constrictions with different aspect ratios, including different length (l) and width (w). A roughly len...
Density of states of a graphene in the presence of strong point defects
graphene strong point defects
2010/11/19
The density of states near zero energy in a graphene due to strong point defects with random
positions are computed. Instead of focusing on density of states directly, we analyze eigenfunctions of in...
Influence of electron-hole drag on conductivity of neutral and gated graphene
Influence of electron-hole drag gated graphene
2010/11/18
Conductivity of monolayer and two-layer graphene is considered with due regard for mutual drag of band elec-trons and holes. Search of contribution of the drag in conductivity shows that this effect c...
Graphene, a single atomic layer of graphite, first isolated in 2004 [2], has made a quantum leap in the exploration of the physics of two-dimensional electron systems [3, 4]. Since the initial report ...
Edge stability, reconstruction, zero-energy states and magnetism in triangular graphene quantum dots with zigzag edges
Edge stability magnetism zigzag edges
2010/11/17
We present the results of ab-initio density functional theory based calculations of the stability and reconstruction of zigzag edges in triangular graphene quantum dots. We show that, while the recons...
Tunneling conductance in strained graphene-based superconductor: Effect of asymmetric Weyl-Dirac fermions
tunneling conductance strained graphene Specular Andreev reflection
2010/11/18
Based on the BTK theory, we investigate the tunneling conductance in a uniaxially strained graphene-based normal metal (NG)/ barrier (I)/superconductor(SG) junctions. In the present model, we assume t...
Comparison of Graphene Formation on C-face and Si-face SiC {0001} Surfaces
Comparison of Graphene Formation Si-face SiC {0001} Surfaces
2010/11/19
The morphology of graphene formed on the ( 0001 ) surface (the C-face) and the (0001) surface
(the Si-face) of SiC, by annealing in ultra-high vacuum or in an argon environment, is studied by atomic ...