58 citations
- University of Missouri–St. LouisUS18 papers
- Lanzhou UniversityCN7 papers
- Tata Institute of Fundamental ResearchIN4 papers
- Hofstra UniversityUS3 papers
- Nanjing UniversityCN3 papers
- Stony Brook UniversityUS3 papers
- Australian National UniversityAU2 papers
- Centre National de la Recherche ScientifiqueFR2 papers
- Northeastern UniversityUS2 papers
- Simon Fraser UniversityCA2 papers
- Southern University of Science and TechnologyCN2 papers
- University of British ColumbiaCA2 papers
6 papers · 1 filter
Laser-induced ultrafast transport and demagnetization at the earliest time: First-principles and real-time investigation
G. P. Zhang, Y. H. Bai, T. Jenkins +1
Here we carry out a first-principles time-dependent calculation to investigate how fast electrons actually move under laser excitation and how large the electron transport affects…
Generating high-order optical and spin harmonics from ferromagnetic monolayers
G. P. Zhang, M. S. Si, M. Murakami +2
High-order harmonic generation (HHG) in solids has entered a new phase of intensive research, with envisioned band-structure mapping on an ultrashort time scale. This partly benefi…
Understanding all-optical spin switching: Comparison between experiment and theory
G. P. Zhang, M. Murakami, M. S. Si +2
Information technology depends on how one can control and manipulate signals accurately and quickly. Transistors are at the core of modern technology and are based on electron char…
The Hadwiger-Nelson problem with two forbidden distances
Geoffrey Exoo, Dan Ismailescu
In 1950 Edward Nelson asked the following simple-sounding question: \emph{How many colors are needed to color the Euclidean plane such that no two points distance $1…
Bounds for the smallest -chromatic graphs of given girth
Geoffrey Exoo, Jan Goedgebeur
Let denote the smallest order of a -chromatic graph of girth at least . We consider the problem of determining for small values of and . After giving…
The chromatic number of the plane is at least 5 - a new proof
Geoffrey Exoo, Dan Ismailescu
We present an alternate proof of the fact that given any 4-coloring of the plane there exist two points unit distance apart which are identically colored.