Six-membered-ring inorganic materials: definition and prospects |
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| Authors: | Gang Liu Xing-Qiu Chen Bilu Liu Wencai Ren Hui-Ming Cheng |
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| Institution: | Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China;School of Materials Science and Engineering, University of Science and Technology of China, Shenyang 110016, China;Shenzhen Geim Graphene Center, Tsinghua-Berkeley Shenzhen Institute and Shenzhen International Graduate School, Tsinghua University, Shenzhen 518055, China |
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| Abstract: | The six-membered ring (SMR) is a common structure unit for numerous material systems. These materials include, but are not limited to, the typical two-dimensional materials such as graphene, h-BN, and transition metal dichalcogenides, as well as three-dimensional materials such as beryllium, magnesium, MgB2 and Bi2Se3. Although many of these materials have already become ‘stars’ in materials science and condensed-matter physics, little attention has been paid to the roles of the SMR unit across a wide range of compositions and structures. In this article, we systematically analyze these materials with respect to their very basic SMR structural unit, which has been found to play a deterministic role in the occurrence of many intriguing properties and phenomena, such as Dirac electronic and phononic spectra, superconductivity and topology. As a result, we have defined this group of materials as SMR inorganic materials, opening up a new perspective on materials research and development. With their unique properties, SMR materials deserve wide attention and in-depth investigation from materials design, new physical discoveries to target-wizard applications. It is expected that SMR materials will find niche applications in next-generation information technology, renewable energy, space, etc. |
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| Keywords: | six-membered-ring (SMR) materials SMR concept SMR physics SMR chemistry SMR mechanics SMR classifications |
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