Jaeger, H. M., Haviland, D. B., Goldman, A. M. & Orr, B. G. Threshold for superconductivity in ultrathin amorphous gallium films. Phys. Rev. B 34, 4920–4923. https://doi.org/10.1103/PhysRevB.34.4920 (1986).
…
Category: 4. Physics
-
In-chip critical plasma seeds for laser writing of reconfigurable silicon photonics systems
Pre-ionization for improved writing
Our solution is inspired by the emerging concept of “plasma optics” exploiting the transient optical properties of plasmas for light manipulation. Advanced demonstrations are various and include transient…
Continue Reading
-
Spatial correlations of charm and anticharm quarks at hadronisation
Momentum correlations of \(c-\bar{c}\) quark and charm hadron pairs at hadronisation
Figure 1 shows the distributions of \(c-\bar{c}\) quark (a) and hadron (b) pairs at hadronisation in the azimuthal opening angle, Φ, i.e. the opening angle…
Continue Reading
-
Design principles for density functionals using a linear expansion
First-order Taylor expansion
We start by Taylor expanding the xc potential \(v_{\rm xc}\) in density variations around a homogeneous density \({n}_{0{\bf{r}}}\) which may be a different homogeneous density for every point r, as expressed by the…
Continue Reading
-
Observation of two cascading screening processes in an iron-based superconductor
Dai, P. Antiferromagnetic order and spin dynamics in iron-based superconductors. Rev. Mod. Phys. 87, 855–896 (2015).
Google Scholar
Dagotto, E. Colloquium: The unexpected properties of alkali…
Continue Reading
-
Quantitative evaluation of methods to analyze motion changes in single-particle experiments
Datasets and ground truth
In order to benchmark the different methods on data with a known ground truth, we relied on numerical simulations. We developed the andi-datasets Python package71 to generate the required datasets to train and evaluate…
Continue Reading
-
The first observations of auroras with dynamic vision sensors
DVS noise filtering
Two types of noise are apparent: hot pixels and front-end noise. Hot pixels generate excessive amounts of the same polarised events, several magnitudes higher than the regular scene event rate. The front-end noise has several…
Continue Reading
-
Reconfigurable binary and ternary logic devices enabling logic state modulation
Figure 1a presents a schematic illustration of the structure of the reconfigurable binary–ternary transistor developed in this study. The device comprises two bottom-gate bottom-contact n-type semiconductor channels connected in series. An…
Continue Reading
-
Ultrafast core-to-core luminescence in BaF2 – LaF3 single crystals
Characterizations of the crystals
The unit cell parameters of the BaF2-LaF3 crystals were examined by XRD (Fig. 2). With increasing the LaF3 concentration, the unit cell parameter a decreased slightly without changes in the Fm-3m space group…
Continue Reading
-
High-temperature resistant resonant cavity microwave sensor for precision blade tip clearance monitoring in aeroengines
Measurement principle of the microwave sensor
The microwave sensor testing system measures the blade tip clearance on the basis of the principle of the microwave phase method. The testing principle is as follows: the microwave sensor emits a…
Continue Reading