The fragment molecular orbital (FMO) method can efficiently do quantum-mechanical calculations of large molecular systems by splitting the whole system into small fragments. The FMO program is distributed within quantum-chemical program suite GAMESS-US. FMO can provide various information regarding the structure and function of biopolymers, such as the interaction between a protein and a ligand.
An application for first-principles calculation based on density functional theory (DFT) optimized for X-ray spectroscopy analysis. Theoretical prediction and data fitting for X-ray spectroscopy such as XANES(X-ray absorption fine structure), XMCD(X-ray magnetic circular dichroism), RXD(resonant X-ray diffraction) can be preformes. This application employs a fully relativistic LSDA calculation based on the finite element method, and also supports the LDA+U method and the TD-DFT calculation.
A fast molecular dynamics simulator for ferroelectrics. This simulator can execute molecular dynamics calculations quickly by dealing with dipole interaction efficiently. It can simulate the physical property of microscopic ferroelectric thin film of tens of nanometers, which is important in FeRAM(Ferroelectric Random Access Memory), controlling the shapes and effects of inactivated layers.
An application for analysis of X-ray resonant spectroscopy. By employing the multiple scattering theory, this application can predict spectra of X-ray absorption fine structure (XANES) accurately. This application can obtain good results even for systems such as K-edge of Si and L-edge of SiO2, where conventional muffin-tin approximation fails. Output files of VASP can be used.
An application for visualization of Fermi surfaces.
This application displays Fermi surfaces colored as a function of an arbitrary scalar quantities such as magnitude of Fermi velocities and superconducting gap. It only requires a minimum set of data to draw Fermi surfaces. FermiSurfer provides a simple graphical user interface; the user can smoothly turn on/off the stereogram, nodal-lines, etc.
An open-source application for the first-principles calculation by the all-electron calculation method based on plane wave bases. This application can perform electronic state calculation by the density functional theory (DFT). This appication also supports the LDA+U method, treatment of spin-orbit interaction and noncolinear magnetism, the GW approtimation, and downfolding by the constraint RPA method.
An application for numerical renormalization group calculations. This application can solve magnetic impurity problems described by the Kondo model and the Anderson model. Input files are prepared for typical impulity models. By modifying input files, one can study more general models of the magnetic impurity problems. A mathematica program for generation of input files are also included.
An application for molecular modeling and visualization. This application can be used in cooperation with other applications such as TINKER, MSMS, Firefly, GAMESS, MOPAC, and Gaussian. In particular, this application is essential to visualization of the FMO calculation in GAMESS. It also supports graphical user interface for input-file preparation, dynamic image presentation of normal-mode vibration, and visualization of energies and structures near transition states.
A GUI program for structure modeling of giant molecules. This application consists of two programs, “fumodel” and “fuplot”. The former supports preparation of input data for FMO in GAMESS, whereas the latter is software for making graphs from numerical results obtained by FMO.
An application for the Rietveld analysis used in X-ray and neutron diffraction experiments. This application determines lattice constants and atomic coordinates from X-ray and neutron diffraction data on powder samples. It supports Windows and Linux. For Windows version, graphical user interface (GUI) named WinPLOTR can be used.