News
Spin texture and ultrafast conversion of spin current to charge current with a topological insulator
Quantum materials, and in particular topological insulators, offer new prospects for more efficient electronics that consume less energy. These materials, such as the Bi1-xSbx alloy, are insulators in depth but have spin-polarised conduction states on their surface. They enable …
Read more...
Manipulating hypersound in mesopouros materials
Physicists and chemists use mesoporous materials to confine ultra-high frequency acoustic phonons. The rapidly advancing field of Nanophononics focuses on the study of hypersound, acoustic waves in the gigahertz to terahertz range, at the nanoscale. These high-frequency acoustic …
Read more...
Exploring the frontiers of ultra-high frequency acoustic phonons : insights on cutting-edge research
High-frequency acoustic phonons break the paradigm of “bad guys” in solid-state physics, and take the lead in revolutionizing nanotechnology. Nanophononics, a rapidly developing field of nanotechnology, is the study of acoustic phonons – ultrahigh-frequency acoustic vibrations of atoms …
Read more...
Ohmic Behavior in Metal Contacts to n/p-Type Transition-Metal Dichalcogenides: Schottky versus Tunneling Barrier Trade-off
High contact resistance (RC) between 3D metallic conductors and single-layer 2D semiconductors poses major challenges toward their integration in nanoscale (opto)electronic devices. While in experiments the large RC values can be partly due to defects, ab initio simulations suggest …
Read more...
A nanoguitar with adjustable 2D materials
The frequency of a musical instrument, such as a guitar string, is tunable over more than one octave, i.e. a ratio of two between the maximum and minimum frequency. It is defined as f=(k/m)^0.5 where k is the spring …
Read more...
