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    Excitons: Taking Electronics into the Future

    July 27, 2018, Categories  Physics, Technology/Electronics

    EPFL researchers have developed a transistor based on excitons – a type of particle most people have not heard of – that is able to function at room temperature. This breakthrough could lead to a new breed of faster, more energy efficient and smaller electronics.

    EPFL researchers have developed a transistor based on excitons – a type of particle most people have not heard of – that is able to function at room temperature. This breakthrough could lead to a new breed of faster, more energy efficient and smaller electronics.

    Excitons could revolutionize the way engineers approach electronics. A team of EPFL researchers has created a new type of transistor – one of the components of circuits – using these particles instead of electrons. What is remarkable is that their exciton-based transistor functions effectively at room temperature, a hitherto insurmountable obstacle. They achieved this by using two 2D materials as semiconductors...

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    ‘Material Universe’ yields surprising New Particle

    November 26, 2015, Categories  Physics, Technology/Electronics

    Left: Allowed states for the standard type-I Weyl fermion. When energy is tuned from below, at zero energy, a pinch in the number of allowed states guarantees the absence of many-body phenomena such as superconductivity or ordering. Right: The newly discovered type-II Weyl fermion. At zero energy, a large number of allowed states are still available. This allows for the presence of superconductivity, magnetism, and pair-density wave phenomena. Credit: B. Andrei Bernevig et al.

    Left: Allowed states for the standard type-I Weyl fermion. When energy is tuned from below, at zero energy, a pinch in the number of allowed states guarantees the absence of many-body phenomena such as superconductivity or ordering. Right: The newly discovered type-II Weyl fermion. At zero energy, a large number of allowed states are still available. This allows for the presence of superconductivity, magnetism, and pair-density wave phenomena. Credit: B. Andrei Bernevig et al.

    An international team of researchers has predicted the existence of a new type of particle called the type-II Weyl fermion in metallic materials. When subjected to a magnetic field, the materials act as insulators for current applied in some directions and as conductors for current applied in other directions...

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