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    Home > Chemicals Industry > New Chemical Materials > A new type of g-wave superconductor may be discovered

    A new type of g-wave superconductor may be discovered

    • Last Update: 2022-06-09
    • Source: Internet
    • Author: User
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    According to recent news from the physicist organization network, a recent study by the Cornell University College of Arts and Sciences has shown that strontium ruthenate may be a new type of g-wave superconductor
    .
    The relevant results were published in the latest issue of "Nature Physics"
    .
    ? In a superconductor, two electrons gather together to form a Cooper pair and move together.
    This "pairing" gives the superconductor a unique characteristic-zero resistance
    .
    In lead, tin, mercury and other s-wave superconductors, the electrons that form a Cooper pair have one spin up and one spin down, and their opposite spin values ​​are considered to balance or cancel each other, so there is no angular momentum
    .
    In the d-wave superconductor, the Cooper pair has double quantum angular momentum
    .
    At present, physicists have theoretically proved that there is a third type of superconductor between these two so-called "single state" states: a p-wave superconductor with a single quantum angular momentum, and the electron pairing method is parallel spin rather than reverse.
    Parallel spin
    .
    ? For more than 20 years, one of the main candidates for p-wave superconductors has been strontium ruthenate
    .
    So the Cornell University research team set out to determine whether strontium ruthenate is a very ideal p-wave superconductor.
    By using high-resolution resonant ultrasound spectra, they found that this material may be a brand-new superconductor: g-wave superconductor
    .
    The research team measured how the elastic constant of the crystal reacts to various acoustic waves when the material is cooled in a superconducting transition of 1.
    4 degrees Kelvin (minus 457.
    87 degrees Fahrenheit)
    .
    Based on these data, they determined that strontium ruthenate is a so-called two-component superconductor, which means that the way electrons are combined is very complicated and cannot be described by a single number
    .
    ? "This is the highest-precision resonance ultrasonic spectrum data obtained under low temperature conditions so far
    .
    " The researchers said
    .
    ? The study uses nuclear magnetic resonance spectroscopy to narrow down the possibility of clarifying which wave superconductor strontium ruthenate may be, effectively eliminating the possibility of p-wave, and also ruling out that strontium ruthenate is a traditional s-wave or d-wave superconductor
    .
    ? Chief editor circle point? Superconductors have very magical characteristics: when the temperature drops to a certain value, the resistance will become zero
    .
    Not only that, but superconductors have another important feature-completely diamagnetic
    .
    With these two "tricks", superconductors are very useful in the fields of information communication, biomedicine, transportation, and aerospace
    .
    For example, the zero-resistance characteristics of superconductors can be well applied in the field of ultra-high voltage transmission, thereby greatly reducing transmission losses
    .
    The discovery of a new type of superconductor will not only expand the research frontier of superconductors, but also further enrich the related applications of superconductors
    .
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