Superconducting materials where the atoms are linked by covalent bonds
Parts of a high pressure cell after the synthesis of heavily boron doped superconducting diamond. The diamond (black ball) is located between two graphite heaters
Covalent superconductors are superconducting materials where the atoms are linked by covalent bonds. The first such material was boron-doped synthetic diamond grown by the high-pressure high-temperature (HPHT) method.[1] The discovery had no practical importance, but surprised most scientists as superconductivity had not been observed in covalent semiconductors, including diamond and silicon.
^E. A. Ekimov; V. A. Sidorov; E. D. Bauer; N. N. Mel'nik; N. J. Curro; J. D. Thompson; S. M. Stishov (2004). "Superconductivity in diamond". Nature. 428 (6982): 542–545. arXiv:cond-mat/0404156. Bibcode:2004Natur.428..542E. doi:10.1038/nature02449. PMID 15057827. S2CID 4423950. L. Boeri, J. Kortus and O. K. Andersen "Three-Dimensional MgB2-Type Superconductivity in Hole-Doped Diamond", K.-W. Lee and W. E. Pickett "Superconductivity in Boron-Doped Diamond"[permanent dead link], X. Blase, Ch. Adessi and D. Connetable "Role of the Dopant in the Superconductivity of Diamond"[permanent dead link], E. Bustarret et al. "Dependence of the Superconducting Transition Temperature on the Doping Level in Single-Crystalline Diamond Films"[permanent dead link] – free download
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Covalentsuperconductors are superconducting materials where the atoms are linked by covalent bonds. The first such material was boron-doped synthetic...
reported transition temperature (by 2009) is 11.4 K. (See also Covalentsuperconductor#Diamond) Uncommon magnetic properties (spin glass state) were observed...
6 are both superconductors below 7 K (−266.15 °C; −447.07 °F). Conventional superconductorcovalentsuperconductors List of superconductors High-temperature...
the synthesis of various covalent organic structures. Dicyanimide was used as an anionic component in an organic superconductor that was, when reported...
the upper lobes of the lungs. Amorphous silicon Black silicon Covalentsuperconductors List of countries by silicon production List of silicon producers...
graphite is an important advantage. Buckminsterfullerene intercalates Covalentsuperconductors Magnesium diboride, which uses hexagonal planar boron sheets instead...
intermolecular forces, electrostatic charge, or hydrogen bonding to strong covalent bonding, provided that the electronic coupling strength remains small relative...
high-temperature superconductor. It is a superconductor under active development. A project at CERN to make MgB2 cables has resulted in superconducting test cables...
notably, inorganic clathrates can be found to be both an insulator and a superconductor (Ba8Si46). A common property of inorganic clathrates that has attracted...
high-temperature superconductor. It is a superconductor under active development. A project at CERN to make MgB2 cables has resulted in superconducting test cables...
monoborides and covalently bonded borides with high hardness, like aluminum magnesium boride (BAM) with the composition AlMgB14, and superconducting MgB2. Application...
critically important for understanding how individual atoms are joined by covalent bonds to form molecules. The application of quantum mechanics to chemistry...
high an ionisation energy. Hydrogen thus forms a covalent H2 molecule, and boron forms a giant covalent structure based on icosahedral B12 clusters. In...
Guéron; H. Bouchiat (2005). "Proximity effect in a superconductor-metallofullerene-superconductor molecular junction". Physical Review B. 72 (3): 033414...
value at a sharply-defined transition temperature for each superconductor. A superconductor also excludes all magnetic fields from its interior, a phenomenon...
temperature. Gadolinium barium copper oxide (GdBCO) is a superconductor with applications in superconducting motors or generators such as in wind turbines. It...
niobium–titanium alloys are used as a type II superconductor wire for superconducting magnets. These superconducting magnets are used in magnetic resonance imaging...
and forms covalent bonds with other elements such as hydrogen, since it does not lose or gain electrons, thus does not form ions. Covalent bonds are simply...
paths. In the first approach, researchers emulate the short, directional covalent carbon bonds of diamond by combining light elements like boron, carbon...
(covalent bonds, 150–900 kJ mol−1). Intermolecular interactions typically do not involve delocalized electrons, unlike metallic and certain covalent bonds...
developed a theory of a rotational response of a superconductor, pointing out that rotation of a superconductor generates magnetic field London moment. This...
a cuprate (CuOn]2n-) salt of lanthanum (La3+). In fact it is a highly covalent solid. It is prepared by high temperature reaction of lanthanum oxide and...
or '1-2-3') superconductor developed at the University of Alabama in Huntsville and the University of Houston in 1987. This superconductor is notable because...
members. Hydrides in group 2 are polymeric covalent hydrides. In these, hydrogen forms bridging covalent bonds, usually possessing mediocre degrees of...
porcelain. Varying crystallinity and electron composition in the ionic and covalent bonds cause most ceramic materials to be good thermal and electrical insulators...
contributed to the understanding of the physical properties of point defects in covalent crystals. and extended the pseudo potential theory, introduced by Phillips...
of atoms are so highly similar, they often form extensive families of covalently bonded structures and compounds. Indeed, a large number of S-N and S-NH...
phases, which are semiconductors, this phase is a metal and becomes a superconductor with a critical temperature increasing from 6 K at 160 GPa to 11 K at...
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