No.11 Seminar ： Superconductivity and recent topics
- Kazushi Aoyama（The Hakubi Center）
- 2010/11/02 4:00pm
- The Hakubi Center (iCeMS West Wing 2F, Seminar Room)
- Japanese
Summary
Superconducting phenomena have attracted many researchers’ interest since Heike Kammerlingh Onnes’s discovery of superconductivity in 1911. In the superconducting state, zero resistance is realized at low temperatures. In other words, superconductors have the ability to conduct electricity without a loss of energy. From the viewpoint of energy efficiency, superconductors are thought to be ideal materials, and a wide range of future applications are expected.
Superconducting phenomena are due to quantum mechanical effects appearing at low temperatures, such as wave nature of electrons in materials and their statistical properties. In 1957, John Bardeen, Leon Cooper, and John Schrieffer suggested a theory of superconductivity known as the BCS theory. In their framework, superconductivity is a macroscopic effect resulting from the condensation of many electron-electron pairs. The BCS theory has provided the basic framework for understanding of various types of superconductors discovered until the present.
In this seminar, after presenting an outline of superconductivity, I will introduce a recent research topic, superconductivity in a magnetic field.