Scientists studying iron-based superconductors are combining unprecedented electronic structure algorithms with the highly efficient operation of the Titan supercomputer at the Energy Department of the Oak Ridge National Laboratory in the United States to predict rotation dynamics and to simulate the detection of new untested materials. Conduct characteristic.
According to the report of the Physicist Organization Network on November 4 (Beijing time), in the latest issue of Nature Physics, three researchers from Rutgers University in the United States calculated the influence of the electric rotating structure in an unprecedented detail. The factor, that is, the measurement of the electronic rotations of fifteen iron-based materials, including several high-temperature superconductors, is calibrated with each other at a given distance and at different times.
Superconducting materials can conduct electricity at high temperatures, with little or no electrical resistance. Unlike current commercial conductors, they do not require expensive cooling to exhibit superconducting properties.
Previous studies have shown that rotational dynamics can create the state required for superconductivity, and model calculations can allow researchers to better understand the characteristics of rotational dynamics and other materials under different conditions such as temperature changes, which are more than under a single condition. Specific experiments are more abundant. In addition, this calculation method allows simultaneous simulation of multiple materials, and the development speed of new superconducting materials or modified materials will be significantly improved.
According to the report, the Titan system's computational power of 27 Giga-Floats allows the research team to compare and contrast the rotational dynamics of 15 materials, and then to simulate and confirm those superconducting characteristics that can explain the problem. The researchers found a new superconducting state in a lithium iron arsenic composite, which is consistent with the experimental results.
“Substituting calculations with calculations is an important step in designing new materials.†The researchers said that in the future, they plan to perform rotational dynamics simulations in other superconducting, non-superconducting, and even difficult-to-experiment material areas (such as radioactive materials). Calculations. (Reporter Fang Linlin)
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