Superexchange superconductivity
WebJul 29, 2008 · Abstract We argue that the newly discovered superconductivity in a nearly magnetic, Fe-based layered compound is unconventional and mediated by antiferromagnetic spin fluctuations, though different from the usual superexchange and specific to … WebFeb 22, 2024 · The discovery of superconductivity in a d9−δ nickelate has inspired disparate theoretical perspectives regarding the essential physics of this class of materials. A key issue is the magnitude of the magnetic superexchange, which relates to whether cuprate-like high-temperature nickelate superconductivity could be realized. We address this …
Superexchange superconductivity
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WebOct 25, 2024 · Center for Superconductivity, Spintronics and Surface Science, Physics and Chemistry Department, Technical University of Cluj-Napoca, Memorandumului No. 28, RO-400114 Cluj-Napoca, Romania ... A New Mechanism of Anisotropic Superexchange Interaction. Phys. Rev. Lett. 1960, 4, 228–230. [Google Scholar] WebOct 22, 2012 · CuO at ambient pressure and temperature. CuO is a particularly interesting case because it exhibits at least four superexchange interactions 9,10, namely J a, J b, J x, J z and three super ...
WebDec 1, 1989 · Superconductivity was first reported [11 by Kamerlingh Onnes in 1911 on mercury (superconducting below 4.15 K), whereas superexchange was discovered in … WebThe preexisting magnetic singlet pairs of the insulating state become charged superconducting pairs when the insulator is doped sufficiently strongly. The mechanism for superconductivity is hence predominantly electronic and magnetic, although weak phonon interactions may favor the state.
WebJournal of Superconductivity and Novel Magnetism January 15, 2015 ... The Hamiltonian included four different superexchange interactions, according with the two different types of ions Mn3+ and Mn4+. Also, the orbital differences accounting for the Mn3+ ions were considered. Likewise, the Hamiltonian included terms dealing with ... WebA contribution to superexchange coming from empty oxygen orbitals is pointed out. We also estimate the small anisotropy of the in-plane superexchange, as well as the superexchange between two adjacent layers in the specific ... KW - SUPERCONDUCTIVITY. KW - LA2CUO4. KW - YBA2CU3O6+X. KW - O-17. KW - EXCITATIONS. KW - ANISOTROPY. KW - OXIDES. U2 ...
WebNov 1, 2024 · The verdict of the experiment settles the debates on the microscopic mechanisms of the cuprate superconductivity in the clear favor of charge-transfer …
WebSep 6, 2024 · The superexchange interaction J occurs when the degeneracy of transition-metal 3d orbitals is lifted by the Coulomb energy U required for their double occupancy, so … genshin impact hidden objectivesWebAug 19, 2024 · The discovery of superconductivity in a nickelate has inspired disparate theoretical perspectives regarding the essential physics of this class of materials. A key issue is the magnitude of the magnetic superexchange, which relates to whether cuprate-like high-temperature nickelate superconductivity could be realized. chris britton fishing rodsWebNov 18, 2024 · Recently, several studies have begun to connect the key factors behind a potential superexchange pairing mechanism. One important factor is the charge-transfer … genshin impact hesap açmaWebThe superex- change interaction J occurs when the degeneracy of transition-metal 3d orbitals is lifted by the Coulomb energy U required for their double occupancy, so that inter- vening oxygen 2p energy levels are separated from the relevant transition-metal 3d level by the charge-transfer energy E. genshin impact hidden palace of zhou guideWebWhat does superexchange mean? Information and translations of superexchange in the most comprehensive dictionary definitions resource on the web. Login . chris britton custom rods facebookWebThe discovery of superconductivity in a d9−δ nickelate has inspired disparate theoretical perspectives regarding the essential physics of this class of materials. A key issue is the magnitude of the magnetic superexchange, which relates to whether cuprate-like high-temperature nickelate superconductivity could be realized. genshin impact hidden civilizationWebMar 8, 2024 · Superconductivity was discovered by Heike Kamerlingh Onnes, a Dutch physicist, and his team in 1911. Not only do superconductors carry electricity with … chris britton halifax