The structural,energetic and electronic properties of chiral(n,m)(3≤n≤6,n/2≤m≤n)single-wall copper nanotubes(CuNTs)have been investigated by using projector-augmented wave method based on density-functional theory...The structural,energetic and electronic properties of chiral(n,m)(3≤n≤6,n/2≤m≤n)single-wall copper nanotubes(CuNTs)have been investigated by using projector-augmented wave method based on density-functional theory.The(4,3)CuNT is energetically stable and should be observed experimentally in both free-standing and tip-suspended conditions,whereas the(5,5)and(6,4)CuNTs should be observed in free-standing and tip-suspended conditions,respectively.The number of conductance channels in the CuNTs does not always correspond to the number of atomic strands comprising the nanotube.Charge density contours show that there is an enhanced interatomic interaction in CuNTs compared with Cu bulk.Current transporting states display different periods and chirality,the combined effects of which lead to weaker chiral currents on CuNTs.展开更多
O431．2 2006064803 GHZ类态原子体系与Fock态光场相互作用的动力学= Dynamics of entangled atoms in GHZ states interacting with the Fock state field[刊,中]/方曙东(池州师范专科学校物理系．安徽,池州(247000)),曹卓良//量子电...O431．2 2006064803 GHZ类态原子体系与Fock态光场相互作用的动力学= Dynamics of entangled atoms in GHZ states interacting with the Fock state field[刊,中]/方曙东(池州师范专科学校物理系．安徽,池州(247000)),曹卓良//量子电子学报．—2006．23(2)．—197—202采用求解Schr(?)dinger方程和数值计算的方法,研究了处于GHZ类态的三个全同二能级纠缠原子与Fock态光场相互作用的动力学特性,讨论了原子布居算符和光场的二阶相干度与三原子体系初始态的纠缠度。展开更多
基金supported by the State Key Development for Basic Research of China(Grant No.2010CB631002) the National Natural Science Foundation of China(Grant Nos.51071098,11104175 and 11214216)
文摘The structural,energetic and electronic properties of chiral(n,m)(3≤n≤6,n/2≤m≤n)single-wall copper nanotubes(CuNTs)have been investigated by using projector-augmented wave method based on density-functional theory.The(4,3)CuNT is energetically stable and should be observed experimentally in both free-standing and tip-suspended conditions,whereas the(5,5)and(6,4)CuNTs should be observed in free-standing and tip-suspended conditions,respectively.The number of conductance channels in the CuNTs does not always correspond to the number of atomic strands comprising the nanotube.Charge density contours show that there is an enhanced interatomic interaction in CuNTs compared with Cu bulk.Current transporting states display different periods and chirality,the combined effects of which lead to weaker chiral currents on CuNTs.
文摘O431．2 2006064803 GHZ类态原子体系与Fock态光场相互作用的动力学= Dynamics of entangled atoms in GHZ states interacting with the Fock state field[刊,中]/方曙东(池州师范专科学校物理系．安徽,池州(247000)),曹卓良//量子电子学报．—2006．23(2)．—197—202采用求解Schr(?)dinger方程和数值计算的方法,研究了处于GHZ类态的三个全同二能级纠缠原子与Fock态光场相互作用的动力学特性,讨论了原子布居算符和光场的二阶相干度与三原子体系初始态的纠缠度。
