Dispersion relation of conduction band and localized states.Hybridization and forming of an indirect energy (hybridization) gap due to the coherent Kondo screening of the local moments by the sea of conduction electrons.In case of Kondo insulators the Fermi level (chemical potential) is located in the hybridization gap.
In solid-state physics, Kondo insulators (also referred as Kondo semiconductors and heavy fermion semiconductors) are understood as materials with strongly correlated electrons, that open up a narrow band gap (in the order of 10 meV) at low temperatures with the chemical potential lying in the gap, whereas in heavy fermion materials the chemical potential is located in the conduction band.
The band gap opens up at low temperatures due to hybridization of localized electrons (mostly f-electrons) with conduction electrons, a correlation effect known as the Kondo effect. As a consequence, a transition from metallic behavior to insulating behavior is seen in resistivity measurements. The band gap could be either direct or indirect. Most studied Kondo insulators are FeSi, Ce3Bi4Pt3, SmB6, YbB12, and CeNiSn, although As of 2016[update] there are over a dozen known Kondo insulators.[1]
In solid-state physics, Kondoinsulators (also referred as Kondo semiconductors and heavy fermion semiconductors) are understood as materials with strongly...
lattice of magnetic impurities, the Kondo effect likely explains the formation of heavy fermions and Kondoinsulators in intermetallic compounds, especially...
where n = 2, 3, 4, depending on the dimensionality of the system. Kondoinsulators are materials where the resistivity follows the formula ρ ( T ) = ρ...
A topological insulator is a material whose interior behaves as an electrical insulator while its surface behaves as an electrical conductor, meaning...
samarium is present both as Sm2+ and Sm3+ ions at the ratio 3:7. It is a Kondoinsulator having a metallic surface state. It was first studied by soviet scientists...
ratio. It belongs to a class of Kondoinsulators; at temperatures above 50 K, its properties are typical of a Kondo metal, with metallic electrical conductivity...
a topological insulator in accord with the earlier theoretical predictions. Since samarium hexaboride is an established Kondoinsulator, i.e. a strongly...
insulators are a class of materials that are expected to conduct electricity according to conventional band theories, but turn out to be insulators (particularly...
impurity model, used in physics to describe heavy fermion systems and Kondoinsulators Anderson model of localization (Anderson localization), in condensed...
His notable researches include the 2010 prediction of topological Kondoinsulators. In 2006, he introduced a new kind of spin-orbit coupled Bose-Einstein...
often applied to the description of Kondo effect-type problems, such as heavy fermion systems and Kondoinsulators[citation needed]. In its simplest form...
the class of Kondoinsulators can develop a topological ground-state, proposing samarium hexaboride (SmB6) as a Topological KondoInsulator. The observation...
the exception YbB12 (where Yb takes an intermediate valence and is a Kondoinsulator), the dodecaborides are all metallic compounds. They all have the UB12...
substances. It is a Kondoinsulator. It is a quantum material; under normal conditions, the interior of the bulk crystal is an insulator whereas the surface...
It belongs to a class of Kondoinsulators, that is at high temperatures (above 50 K), its properties are typical of a Kondo metal, with metallic electrical...
hexaboride, a Kondoinsulator at low temperatures. Sebastian found that samarium hexaboride acts as a simultaneous conductor and insulator within its bulk...
enhanced effective mass, and a hybridization gap develops. In contrast to Kondoinsulators, the chemical potential of heavy fermion compounds lies within the...
potential applications to fault-tolerant quantum computation. Topological insulators and topological superconductors (beyond 1D) do not have topological order...
the exception YbB12 (where Yb takes an intermediate valence and is a Kondoinsulator), the dodecaborides are all metallic compounds. They all have the UB12...
neutral quasiparticle that exists mainly in condensed matter, including insulators, semiconductors, some metals, but also in certain atoms, molecules and...
another state in the valence band. This determines if the material is an insulator or a metal in the dimension of the propagation. The result of the number...
substances. It is a Kondoinsulator. It is a quantum material; under normal conditions, the interior of the bulk crystal is an insulator whereas the surface...
Mottness – Materials classically predicted to be conductors, that are actually insulatorsPages displaying short descriptions of redirect targets Quantum spin liquid –...
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