Zigzag equilibrium structure in monatomic wires
نویسندگان
چکیده
منابع مشابه
Zigzag phase transition in quantum wires.
We study the quantum phase transition of interacting electrons in quantum wires from a one-dimensional (1D) linear configuration to a quasi-1D zigzag arrangement using quantum Monte Carlo methods. As the density increases from its lowest values, first, the electrons form a linear Wigner crystal, then, the symmetry about the axis of the wire is broken as the electrons order in a quasi-1D zigzag ...
متن کاملEven-odd behavior of conductance in monatomic sodium wires.
With the aid of the Friedel sum rule, we perform first-principles calculations of conductances through monatomic Na wires, taking into account the sharp tip geometry and discrete atomic structure of electrodes. We find that conductances (G) depend on the number (L) of atoms in the wires; G is G(0)( = 2e(2)/h) for odd L, independent of the wire geometry, while G is generally smaller than G(0) an...
متن کاملFour-atom period in the conductance of monatomic Al wires.
We present first-principles calculations based on density functional theory for the conductance of monatomic Al wires between Al(111) electrodes. In contrast to the even-odd oscillations observed in other metallic wires, the conductance of the Al wires is found to oscillate with a period of four atoms as the length of the wire is varied. Although local charge neutrality can account for the obse...
متن کاملElectronic states and magnetism of monatomic Co and Cu wires
The electronic structure of monatomic Cu and Co wires grown by step decoration of the vicinal Pt~997! surface has been investigated by angle-resolved photoemission with synchrotron radiation. Sensitivity to the small amount ~'0.1 monolayer! of deposited material that forms the one-dimensional wires could be achieved at photon energies close to the Pt 5d Cooper minimum, where the photoemission c...
متن کاملEffect of electron and hole doping on the structure of C, Si, and S nanowires
We use ab initio density functional calculations to study the effect of electron and hole doping on the equilibrium geometry and electronic structure of C, Si, and S monatomic wires. Independent of doping, all these nanowires are found to be metallic. In absence of doping, C wires are straight, whereas Si and S wires display a zigzag structure. Besides two preferred bond angles of 60° and 120° ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Surface Science
سال: 2001
ISSN: 0039-6028
DOI: 10.1016/s0039-6028(01)00875-5