Central European Journal of Physics
1644-3608
1895-1082
Cơ quản chủ quản: N/A
Lĩnh vực:
Các bài báo tiêu biểu
Structural, morphology and electrical properties of layered copper selenide thin film
Tập 7 - Trang 379-384 - 2009
Thin films of copper selenide (CuSe) were physically deposited layer-by-layer up to 5 layers using thermal evaporation technique onto a glass substrate. Various film properties, including the thickness, structure, morphology, surface roughness, average grain size and electrical conductivity are studied and discussed. These properties are characterized by X-ray diffraction (XRD), atomic force micro...... hiện toàn bộ
A theoretical forecast of the hydrogen bond changes in the electronic excited state for BN and its derivatives
Tập 10 - Trang 116-123 - 2011
The relationship between electronic spectral shifts and hydrogen-bonding dynamics in electronically excited states of the hydrogen-bonded complex is put forward. Hydrogen bond strengthening will induce a redshift of the corresponding electronic spectra, while hydrogen bond weakening will cause a blueshift. Time-dependent density function theory (TDDFT) was used to study the excitation energies in ...... hiện toàn bộ
A fluid generalization of membranes
- 2011
In a certain sense a perfect fluid is a generalization of a point particle. This leads to the question as to what is the corresponding generalization for extended objects. Here the lagrangian formulation of a perfect fluid is much generalized by replacing the product of the co-moving vector which is a first fundamental form by higher dimensional first fundamental forms; this has as a particular ex...... hiện toàn bộ
Notes on entropic characteristics of quantum channels
Tập 11 - Trang 69-77 - 2012
One of most important issues in quantum information theory concerns transmission of information through noisy quantum channels. We discuss a few channel characteristics expressed by means of generalized entropies. Such characteristics can often be treated in line with more usual treatment based on the von Neumann entropies. For any channel, we show that the q-average output entropy of degree q ≥ 1...... hiện toàn bộ
On entanglement distillation and quantum error correction for unknown states and channels
Tập 1 - Trang 695-707 - 2003
We consider the problem of invariance of distillable entanglement D and quantum capacities Q under erasure of information about single copy of quantum state or channel respectively. We argue that any 2 ⊗N two-way distillable state is still two-way distillable after erasure of single copy information. For some known distillation protocols the obtained two-way distillation rate is the same as if Ali...... hiện toàn bộ
Atomic simulation of the vacancies in BCC metals with MAEAM
Tập 4 - Trang 481-493 - 2006
The formation energy of the mono-vacancy and both the formation energy and binding energy of the di-and tri-vacancy in BCC alkali metals and transition metals have been calculated by using the modified analytical embedded-atom method (MAEAM). The formation energy of each type of configuration of the vacancies in the alkali metals is much lower than that in the transition metals. From minimum of th...... hiện toàn bộ
Growth and characterization of pulsed laser deposited ZnO thin films
Tập 5 - Trang 385-397 - 2007
One of the most important and promising materials from metal oxides is ZnO with specific properties for near UV emission and absorption optical devices. The properties of ZnO thin films strongly depend on the deposition method. Among them, pulsed laser deposition (PLD) plays an important role for preparing various kinds of ZnO films, e.g. doped, undoped, monocrystalline, and polycrystalline. Diffe...... hiện toàn bộ
A comparison of the effect of the ellipticity on the small and large solid-core PCF’s characteristics
Tập 12 - Trang 671-677 - 2014
In this paper we study small and large solid-core PCFs with elliptical shaped air-holes for the hexagonal lattice, which were constructed by omitting one air-hole (small core) and seven air-holes (large core), respectively, and we compare their characteristics with those with circular holes. We use two types of ellipticity: vertical and horizontal. Birefringence, dispersion, and the numerical aper...... hiện toàn bộ
A system of units compatible with geometry
Tập 2 Số 1 - Trang 204-219 - 2004
Alternative system of fundamental units: length, time, action, electrical charge is presented instead of the present one: length, time, mass and electrical current. It contains more quantities which are scalars under scalings. Then it is possible to recognize from the unit, what kind of a geometric quantity is a given physical quantity. This is the reason why the new system of units is called comp...... hiện toàn bộ