H
Hiroshi Kamata
Researcher at École Normale Supérieure
Publications - 35
Citations - 655
Hiroshi Kamata is an academic researcher from École Normale Supérieure. The author has contributed to research in topics: Quantum Hall effect & Superconductivity. The author has an hindex of 12, co-authored 35 publications receiving 533 citations. Previous affiliations of Hiroshi Kamata include Nippon Telegraph and Telephone & University of Tokyo.
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Fractionalized wave packets from an artificial Tomonaga-Luttinger liquid
TL;DR: Time-resolved transport measurements on an artificial TLL composed of coupled integer quantum Hall edge channels are reported, in which single charge fractionalization processes are identified, informative for elucidating the nature of TLLs and low-energy excitations in the edge channels.
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Edge magnetoplasmon transport in gated and ungated quantum Hall systems
TL;DR: In this article, the authors measured the velocity, amplitude, and broadening of an edge magnetoplasmon (EMP) pulse injected by applying a voltage pulse to an Ohmic contact.
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Voltage-controlled group velocity of edge magnetoplasmon in the quantum Hall regime
TL;DR: In this paper, the group velocity of edge magnetoplasmons (EMPs) in the quantum Hall regime was investigated by means of time-of-flight measurement, and it was shown that the velocity of the EMs traveling along the edge channel defined by a metallic gate electrode strongly depends on the voltage applied to the gate.
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Preparation and properties of high transition temperature aromatic polyphosphonates by phase‐transfer‐catalyzed polycondensation of phenylphosphonic dichloride with bisphenols
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Plasmon transport in graphene investigated by time-resolved electrical measurements
Norio Kumada,Shin Ichi Tanabe,Hiroki Hibino,Hiroshi Kamata,Hiroshi Kamata,Masayuki Hashisaka,Koji Muraki,Toshimasa Fujisawa +7 more
TL;DR: It is demonstrated that the plasmon velocity can be changed over two orders of magnitude by applying a magnetic field B and screening the plAsmon electric field with a gate metal; at high B, edge magnetoplasmons are formed and their velocity depends on B, n and the gate screening effect.