Magnetooptical microwave spectroscopy of the coherent magnetic state in the mixed valence compound SmB6 in the frequency range 40-120 GHz
In undoped pure single crystals of the mixed valence compound SmB6 anomalous ESR absorption is observed in the frequency range v=40-120 GHz at temperatures of 1.8-4.2 K. The ESR for the case of the coherent ground state consists of two components corresponding to g-factors g1=1.907±0.003 and g2=1.89...
| Main Authors: | , , , , , , , , |
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| Format: | Journal article |
| Language: | English |
| Published: |
1996
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| _version_ | 1797072662898409472 |
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| author | Demishev, S Semeno, A Sluchanko, N Samarin, N Singleton, J Ardavan, A Blundell, S Hayes, W Kunii, S |
| author_facet | Demishev, S Semeno, A Sluchanko, N Samarin, N Singleton, J Ardavan, A Blundell, S Hayes, W Kunii, S |
| author_sort | Demishev, S |
| collection | OXFORD |
| description | In undoped pure single crystals of the mixed valence compound SmB6 anomalous ESR absorption is observed in the frequency range v=40-120 GHz at temperatures of 1.8-4.2 K. The ESR for the case of the coherent ground state consists of two components corresponding to g-factors g1=1.907±0.003 and g2=1.890±0.003. The amplitude of both ESR lines strongly depends on temperature in the temperature range studied: the amplitude of the first line with g=gt increases and the amplitude of the second line decreases with temperature. A model based on consideration of intrinsic defects in the SmB6 crystalline lattice, with a density ∼1015-1016 cm-3, is suggested as an explanation for the anomalous ESR-behavior. In the frequency range v>70 GHz at T=4.2 K, in addition to the main ESR lines, a new magnetic resonance with a hysteretic field dependence is discovered. © 1996 American Institute of Physics. |
| first_indexed | 2024-03-06T23:10:56Z |
| format | Journal article |
| id | oxford-uuid:6570837b-c404-414c-b3f5-97c95ff16177 |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-06T23:10:56Z |
| publishDate | 1996 |
| record_format | dspace |
| spelling | oxford-uuid:6570837b-c404-414c-b3f5-97c95ff161772022-03-26T18:25:30ZMagnetooptical microwave spectroscopy of the coherent magnetic state in the mixed valence compound SmB6 in the frequency range 40-120 GHzJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:6570837b-c404-414c-b3f5-97c95ff16177EnglishSymplectic Elements at Oxford1996Demishev, SSemeno, ASluchanko, NSamarin, NSingleton, JArdavan, ABlundell, SHayes, WKunii, SIn undoped pure single crystals of the mixed valence compound SmB6 anomalous ESR absorption is observed in the frequency range v=40-120 GHz at temperatures of 1.8-4.2 K. The ESR for the case of the coherent ground state consists of two components corresponding to g-factors g1=1.907±0.003 and g2=1.890±0.003. The amplitude of both ESR lines strongly depends on temperature in the temperature range studied: the amplitude of the first line with g=gt increases and the amplitude of the second line decreases with temperature. A model based on consideration of intrinsic defects in the SmB6 crystalline lattice, with a density ∼1015-1016 cm-3, is suggested as an explanation for the anomalous ESR-behavior. In the frequency range v>70 GHz at T=4.2 K, in addition to the main ESR lines, a new magnetic resonance with a hysteretic field dependence is discovered. © 1996 American Institute of Physics. |
| spellingShingle | Demishev, S Semeno, A Sluchanko, N Samarin, N Singleton, J Ardavan, A Blundell, S Hayes, W Kunii, S Magnetooptical microwave spectroscopy of the coherent magnetic state in the mixed valence compound SmB6 in the frequency range 40-120 GHz |
| title | Magnetooptical microwave spectroscopy of the coherent magnetic state in the mixed valence compound SmB6 in the frequency range 40-120 GHz |
| title_full | Magnetooptical microwave spectroscopy of the coherent magnetic state in the mixed valence compound SmB6 in the frequency range 40-120 GHz |
| title_fullStr | Magnetooptical microwave spectroscopy of the coherent magnetic state in the mixed valence compound SmB6 in the frequency range 40-120 GHz |
| title_full_unstemmed | Magnetooptical microwave spectroscopy of the coherent magnetic state in the mixed valence compound SmB6 in the frequency range 40-120 GHz |
| title_short | Magnetooptical microwave spectroscopy of the coherent magnetic state in the mixed valence compound SmB6 in the frequency range 40-120 GHz |
| title_sort | magnetooptical microwave spectroscopy of the coherent magnetic state in the mixed valence compound smb6 in the frequency range 40 120 ghz |
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