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Shot Noise in Mesoscopic Systems: from Single Particles to Quantum Liquids
Kensuke Kobayashi, Masayuki Hashisaka
Shot noise, originating from the discrete nature of electric charge, is generated by scattering processes. Shot-noise measurements have revealed microscopic charge dynamics in vari…
Time-resolved investigation of plasmon mode along interface channels in integer and fractional quantum Hall regimes
Chaojing Lin, Masayuki Hashisaka, Takafumi Akiho +2
Quantum Hall (QH) edge channels appear not only along the edge of the electron gas but also along an interface between two QH regions with different filling factors. However, the f…
Andreev reflection of fractional quantum Hall quasiparticles
Masayuki Hashisaka, Thibaut Jonckheere, Takafumi Akiho +4
Electron correlation in a quantum many-body state appears as peculiar scattering behaviour at its boundary, symbolic of which is Andreev reflection at a metal-superconductor interf…
Cryogenic GaAs high-electron-mobility-transistor amplifier for current noise measurements
Sanghyun Lee, Masayuki Hashisaka, Takafumi Akiho +2
We show that a cryogenic amplifier composed of a homemade GaAs high-electron-mobility transistor (HEMT) is suitable for current-noise measurements in a mesoscopic device at dilutio…