Mesoscopics is a research area in condensed matter physics that investigates systems of intermediate size between microscopic (atomic) and macroscopic scales, where quantum coherence, phase interference, and discrete energy spectra significantly influence transport and thermodynamic properties. Typical mesoscopic systems include quantum dots, nanowires, and metallic nanostructures whose dimensions are comparable to electron phase-coherence or mean-free paths, leading to phenomena such as universal conductance fluctuations, weak localization, and Coulomb blockade. The field combines quantum many-body theory, statistical mechanics, and advanced nanofabrication and measurement techniques to study electron transport, noise, and correlations in low-dimensional, low-temperature systems, often with relevance to quantum information and nanoelectronic device design.
Scientists at the University of Würzburg and the German national metrology institute (PTB) have carried out an experiment that realizes a new kind of quantum standard of resistance. It's based on the Quantum Anomalous Hall ...
Condensed Matter
Dec 4, 2024
0
118
Measuring tiny magnetic fields, such as those generated by brain waves, enables many new novel opportunities for medical diagnostics and treatment. The research team led by Dr. Jan Jeske at Fraunhofer IAF is working on a ...
Condensed Matter
Oct 8, 2024
0
96
MIT physicists and colleagues report new insights into exotic particles key to a form of magnetism that has attracted growing interest because it originates from ultrathin materials only a few atomic layers thick. The work, ...
General Physics
Aug 1, 2024
0
254
In electronic technologies, key material properties change in response to stimuli like voltage or current. Scientists aim to understand these changes in terms of the material's structure at the nanoscale (a few atoms) and ...
Nanophysics
Aug 1, 2024
0
102
Researchers have successfully controlled the quantum mechanical properties of Andreev bound states in bilayer graphene-based Josephson junctions using gate voltage. Their research is published in Physical Review Letters. ...
Superconductivity
Jul 1, 2024
0
149
A study has unlocked new dimensions in understanding the ultrafast processes of charge and energy transfer at the microscale. The research delves into the dynamics of microscopic particles, providing insights that could revolutionize ...
Condensed Matter
Jun 24, 2024
0
103
Researchers at ETH Zurich have shown that quantum states of single electron spins can be controlled by currents of electrons whose spins are evenly aligned. In the future, this method could be used in electronic circuit elements.
Condensed Matter
Jun 20, 2024
0
339
A research team has, for the first time, realized the quantum amplification of an extremely weak magnetic field by using dark spin, with the magnetic field magnification exceeding a factor of 5,000 and the single magnetic ...
Condensed Matter
May 15, 2024
0
158
A research team from the Helmholtz-Zentrum Dresden-Rossendorf (HZDR) and the University of Salerno in Italy has discovered that thin films of elemental bismuth exhibit the so-called non-linear Hall effect, which could be ...
Condensed Matter
Feb 28, 2024
0
150
A team at HZB has developed a new measurement method that, for the first time, accurately detects tiny temperature differences in the range of 100 microKelvin in the thermal Hall effect. Previously, these temperature differences ...
Condensed Matter
Jan 17, 2024
0
213
