Zirconium Dodecaboride, a Novel Superconducting Material with Enhanced Surface Characteristics
作者： Mikhail Belogolovskii , Israel Felner , Vladimir Shaternik
DOI: 10.1007/978-90-481-9818-4_13
关键词: Zirconium 、 Condensed matter physics 、 Atomic orbital 、 Boron 、 Electronic structure 、 Charge density 、 Superconductivity 、 Covalent bond 、 Fermi energy 、 Materials science
摘要: The paper gives a short overview of electronic characteristics ZrB12 single crystals in normal and superconducting states. First-principles calculations the structure charge density redistribution reveal that zirconium dodecaboride belongs to class ‘covalent metals’ with itinerant states at Fermi energy composed by weakly hybridized 2p orbitals B atoms 4d levels Zr strong covalent bonding between nearest intra- inter-cluster boron atoms. Our recent magnetic tunneling measurements have revealed an enhancement properties surface comparing its bulk. Relevant data some other groups support our conclusion this material as first known superconductor native near-surface enhanced order parameter.
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