‘Blackswan’ metal
- Title
- ‘Blackswan’ metal
- Authors
- KIM, JEE HOON
- Date Issued
- 2018-02-23
- Publisher
- National Synchrotron Radiation Research Center (NSRRC)
- Abstract
- In 1827, German scientist Georg Ohm published Ohm's law of constant electrical
resistance in metals. Ohm's Law is one of the unbreakable rules of experience after its
discovery. It was recently discovered that Ohm's law, which never seemed to be broken,
was violated in BiSb alloys. The BiSb alloy shows the twisting energy band of the
electron and becomes a Weyl metal in the absence of time reversal symmetry. When an
electric field is applied in a certain direction, some of the electrons move in the direction
of the electric field without resistance. The density of electrons flowing without
resistance changes with the applied electric field. As a result, no current flows in
proportion to the applied voltage. Therefore, the resistance changes according to the
voltage, that is, the metal does not satisfy Ohm's law. In this talk, we will look closely at
the meaning of Ohm's law and share information on the principles and applications of
Ohm's law that breaks the law.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/98359
- Article Type
- Conference
- Citation
- THE 18th TAIWAN-JAPAN-KOREA SYMPOSIUM ON STRONGLY CORRELATED ELECTRON SYSTEMS (TJK18), 2018-02-23
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