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Superconductor predicted the smallest coolest electronic components

Trying to maintain the ability to exponential growth of electronic components, the engineers have two problems: the components needed to make devices smaller and less waste heat distribution. Width to create a single molecule without thermal damage of the conductive metal lines means that a new electronic components can simultaneously solve two problems.

Wire and electronic components, the heat is proportional to its resistance, the smaller the size the greater its resistance. By the Ohio State University, Athens (from the name of the ability of the Americans… Oh!) Campus of the Saw-Wai Hla new team led by R & D is the superconductor wire, a current without resistance to allow the flow of material, but also no heat loss.

They produced a long metal wire four elements – the smallest of the superconductor are currently reported.

The smallest wire

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Production of such nanoscale wires need to be a kind of organic molecules and gallium salt mixture placed in a super-clean silver foil. Molecules within the mixture will be automatically arranged in a string of thin, organic molecules in the periphery, gallium salt in the center.

The researchers will complete the installation of cooling to 5K (-268 ° C), using scanning tunneling microscopy (STM) to examine these tiny wires and test its conductivity. In the isolated state, gallium salt and organic compounds are non-conductive, but Hla and his colleagues have evidence that these two substances formed by the metal lines are superconducting properties.

Scanning tunneling microscope (STM) work by the voltage added to the microscope probe tip and the ends of the scanned object and then detect current changes. When Hla’s team transform voltage to test the conductivity, the two equations in the drawing into a “V”-type conductivity gap, when the temperature is gradually increased to 15 Kelvin gradually disappear when the gap – a superconducting properties.

Argument

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“This superconducting gap exists in the smallest molecules of only four nano-metal Gallium reflected online, but only three gallium salt nanowires without this feature. To find the reason of which will help to explain such How useful for small structures superconductivity. “, Hla said.

Oxford University Arzhang Ardavan called the study “will lead to superconductivity research debate among physicists.” But he added that, because the silver sheet metal line in the nanometer scale have a very small electrical conductivity, it is difficult to prove flow of electrons along the wire and not skip the silver flakes (Note: The tunnel effect).

Hla said (metal wire) is probably produced in the semiconductor or insulator, and thus further evidence of the electronic conductivity along the wires without resistance. He also said his team used for production of metal only the needs of the scanning tunneling microscope images.

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作者: Sharpay