Faculty of Science, Niigata University

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Department of Physics

Introduction to Department of Physics

Dr. Sin-itiro Tomonaga (Nobel prize winner in 1965) said in his book "What is physics?" (written in Japanese) that physics is the study to explore fundamental laws behind natural phenomena in the light of experimental facts. Since Galileo and Newton established such a physical method, physics has developed tremendously. We now have detailed knowledge about our world at the microscopic scale (quarks, nuclei, atoms, and molecules) and the cosmological scale (big bang, evolution of the universe). At the practical scale our understanding of the physical properties of materials in nature has advanced so deeply that we are in a position to design and create new materials. Physics supports a wide variety of high-tech products including computers, advanced medical apparatuses, and energy-saving devices. It is quite certain that physics will continue to develop along with ambitious challenges to enigmas in the new century.
The department of physics offers lectures, laboratory works, and problem practices that enable the students to do advanced research in a graduate school. Those courses cover the fields ranging from the classical physics to fundamentals of the modern physics. The department emphasizes seminars for small groups of students and internship programs. The senior students are grouped in small number and given specific themes for their graduate research. Such concentrated guidance helps the students to acquire skill to solve problems they will confront. Our alumni thus are taking an active part in various fields. Many of the students enter the Graduate School after graduation to advance their research.

A carbon nanotube and its band structure computed with the density functional method:It is a very important problem to extract such exotic electronic structures of the nano-graphite systems both from theoretical and experimental views.

Visualized image of computer simulation for accumulating two different superionic conductors: CaF2-BaF2-CaF2-BaF2, where Ca2+:red, Ba2+:green and F-:blue. This shows that F ions diffuse in the layered superlattice system.

General relativistic simulation of the coalescing binary neutron stars. The evolution of mass density on the equatorial plane (upper figures) and the emitted gravitational waves (lower figure) are shown.

Theoretically predicted exotic shape of the nucleus 80Zr

Novel structure of our lattice may realize a new symmetry (supersymmetry).The supersymmetry is an important clue to higer dimensional field theories, neutrino physics and lattice gauge theory.

We study the nuclear physics with a exotic beam using the RIKEN heavy-ion accelerator facility. This picture shows the test experiment for new detector system which is developed for the main experiment.

Top-loading type dilution refrigerator(20mK) with a superconducting magnet(18T). We study of magnetism and superconductivity in strongly correlated electon systems using ultrasonic measurements.

CP-MAS NMR spectrometer with 9.6T superconducting magnet : Investigation of the nonmetal-metal transition in liquid semiconductor at high temperatures is one of main subjects at the moment.