Magnetic Properties of the Topological Kondo Insulator SmB6: Localized Magnetic Moments and Pauli Paramagnetism
| Autor: | A. N. Azarevich, V. V. Glushkov, A. V. Bogach, S. V. Demishev, N. Yu. Shitsevalova, V. B. Filipov, M. I. Gilmanov |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Physics
Physics and Astronomy (miscellaneous) Solid-state physics Magnetic moment Kondo insulator Atmospheric temperature range Topology 01 natural sciences 010305 fluids & plasmas Ion Paramagnetism Magnetization symbols.namesake Pauli exclusion principle 0103 physical sciences symbols Condensed Matter::Strongly Correlated Electrons 010306 general physics |
| Zdroj: | JETP Letters. 109:150-156 |
| ISSN: | 1090-6487 0021-3640 |
| DOI: | 10.1134/s0021364019030081 |
| Popis: | The magnetic properties of the topological Kondo insulator SmB6 are studied in the temperature range T T*, the magnetization qualitatively corresponds to the model of decay of Kondo singlets and is determined by the Pauli paramagnetism, which includes both the linear and nonlinear contributions. In the range T < T*, the Pauli paramagnetism becomes supplemented in the threshold manner by the contribution of localized magnetic moments. The performed estimate of effective magnetic moments arising at T < T* gives anomalously high values μ* ∼ (7–14) μB ion, far exceeding the values μ* ∼ (3–5) μB expected for a separate magnetic Sm3+ ion. This is a signature of the possible spin-polaron nature of localized magnetic moments in the topological Kondo insulator SmB6. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|