Earticle

초록

영어

It has been over 100 years since Dutch physicist Onnes discovered the phenomenon of superconductivity. About 20 years after the discovery of zero resistance, German physicist Meissner discovered another property of superconductivity, perfect diamagnetism. Zero resistance can bring about revolutionary changes in the transportation and management of electricity, and perfect diamagnetism can be used in magnetic levitation trains, contactless bearings, and magnetic shielding, etc. In 1937, Type II superconductor with high magnetic limits was discovered. The Type II of superconductors led to the industrialization of medical Magnetic resonance image (MRI) and high-magnetic field magnets. In 1960, the tunneling phenomenon, in which electrons move from one conducting layer to the opposite conducting layer through a thin insulating layer in superconductors and semiconductors, was observed and its mechanism was theoretically established by Josephson. Superconducting quantum interference device (SQUID) sensors that utilize the tunneling phenomenon at the Josephson junction are used in a wide range of fields, including medical and geomagnetic detection, and their scope of use is expanding to Quantum computers. In 1986, a high-temperature (Tc) oxide superconductor whose Tc exceeded the superconducting temperature limit of the BSC theory was discovered. Physicists are also making efforts to elucidate the high-temperature superconductivity phenomenon, which is difficult to explain with the BCS theory based on the interaction of phonon vibration and electrons. If a room-temperature superconductor is discovered through exploration on new superconducting materials, the future human life and industry will be innovatively changed by the superconducting technology.

목차

Abstract
1. 제로저항(Zero resistance)
2. 영구전류(Persistent current)
3. 거대전류(Large current)
4. 자기한계(Critical magnetic field)
5. 완전반자성(Perfect diamagnetism)
6. 완전도체(Perfect conductor)와의 차이
7. 2종 초전도체(Type II superconductor)
8. BCS 이론
9. 조셉슨 터널링(Tunneling)-양자소자
10. 고온초전도체(High-Tc Superconductor)
11. 결론
REFERENCES

키워드

저자

• Chan-Joong Kim [ Korea Atomic Energy Research Institute, Superconductor Magnetic Levitation Technology, Ltd., Daejeon, Korea ] Corresponding Author

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  한국초전도·저온논문지 (구 한국초전도저온공학회논문지) [Progress in Superconductivity and Cryogenics]

• 간기

  계간

• pISSN

  1229-3008

• eISSN

  2287-6251

• 수록기간

  1999~2025

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 427 DDC 537