The Temperature Dependence of the Magnetization Process of the Kondo Insulator YbB<sub>12</sub>
The properties of the Kondo insulator in a strong magnetic field are one of the most intriguing subjects in condensed matter physics. The Kondo insulating state is expected to be suppressed by magnetic fields, which results in the dramatic change in the electronic state. We have studied the magnetiz...
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MDPI AG
2020-01-01
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| author | Yasuhiro H. Matsuda Yoshiki Kakita Fumitoshi Iga |
| author_facet | Yasuhiro H. Matsuda Yoshiki Kakita Fumitoshi Iga |
| author_sort | Yasuhiro H. Matsuda |
| collection | DOAJ |
| description | The properties of the Kondo insulator in a strong magnetic field are one of the most intriguing subjects in condensed matter physics. The Kondo insulating state is expected to be suppressed by magnetic fields, which results in the dramatic change in the electronic state. We have studied the magnetization process of one of the prototypical Kondo insulators YbB<inline-formula> <math display="inline"> <semantics> <msub> <mrow></mrow> <mn>12</mn> </msub> </semantics> </math> </inline-formula> at several temperatures in magnetic fields of up to 80 T. The metamagnetism due to the insulator-metal (IM) transition seen around 50 T was found to become significantly broadened at approximately 30 K. This characteristic temperature <inline-formula> <math display="inline"> <semantics> <mrow> <msup> <mi>T</mi> <mo>*</mo> </msup> <mo>≈</mo> </mrow> </semantics> </math> </inline-formula> 30 K in YbB<inline-formula> <math display="inline"> <semantics> <msub> <mrow></mrow> <mn>12</mn> </msub> </semantics> </math> </inline-formula> is an order of magnitude lower than the Kondo temperature <inline-formula> <math display="inline"> <semantics> <msub> <mi>T</mi> <mi>K</mi> </msub> </semantics> </math> </inline-formula> = 240 K. Our results suggest that there is an energy scale smaller than the Kondo temperature that is important to understanding the nature of Kondo insulators. |
| first_indexed | 2024-04-13T07:59:33Z |
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| id | doaj.art-baa4510bff5b46e58184e0746e419d19 |
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| issn | 2073-4352 |
| language | English |
| last_indexed | 2024-04-13T07:59:33Z |
| publishDate | 2020-01-01 |
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| record_format | Article |
| series | Crystals |
| spelling | doaj.art-baa4510bff5b46e58184e0746e419d192022-12-22T02:55:20ZengMDPI AGCrystals2073-43522020-01-011012610.3390/cryst10010026cryst10010026The Temperature Dependence of the Magnetization Process of the Kondo Insulator YbB<sub>12</sub>Yasuhiro H. Matsuda0Yoshiki Kakita1Fumitoshi Iga2The Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwa, Chiba 277-8581, JapanThe Institute for Solid State Physics, The University of Tokyo, 5-1-5 Kashiwa, Chiba 277-8581, JapanInstitute of Quantum Beam Science, Ibaraki University, Mito 310-8512, JapanThe properties of the Kondo insulator in a strong magnetic field are one of the most intriguing subjects in condensed matter physics. The Kondo insulating state is expected to be suppressed by magnetic fields, which results in the dramatic change in the electronic state. We have studied the magnetization process of one of the prototypical Kondo insulators YbB<inline-formula> <math display="inline"> <semantics> <msub> <mrow></mrow> <mn>12</mn> </msub> </semantics> </math> </inline-formula> at several temperatures in magnetic fields of up to 80 T. The metamagnetism due to the insulator-metal (IM) transition seen around 50 T was found to become significantly broadened at approximately 30 K. This characteristic temperature <inline-formula> <math display="inline"> <semantics> <mrow> <msup> <mi>T</mi> <mo>*</mo> </msup> <mo>≈</mo> </mrow> </semantics> </math> </inline-formula> 30 K in YbB<inline-formula> <math display="inline"> <semantics> <msub> <mrow></mrow> <mn>12</mn> </msub> </semantics> </math> </inline-formula> is an order of magnitude lower than the Kondo temperature <inline-formula> <math display="inline"> <semantics> <msub> <mi>T</mi> <mi>K</mi> </msub> </semantics> </math> </inline-formula> = 240 K. Our results suggest that there is an energy scale smaller than the Kondo temperature that is important to understanding the nature of Kondo insulators.https://www.mdpi.com/2073-4352/10/1/26kondo insulatorinsulator-metal transitionhigh magnetic field |
| spellingShingle | Yasuhiro H. Matsuda Yoshiki Kakita Fumitoshi Iga The Temperature Dependence of the Magnetization Process of the Kondo Insulator YbB<sub>12</sub> Crystals kondo insulator insulator-metal transition high magnetic field |
| title | The Temperature Dependence of the Magnetization Process of the Kondo Insulator YbB<sub>12</sub> |
| title_full | The Temperature Dependence of the Magnetization Process of the Kondo Insulator YbB<sub>12</sub> |
| title_fullStr | The Temperature Dependence of the Magnetization Process of the Kondo Insulator YbB<sub>12</sub> |
| title_full_unstemmed | The Temperature Dependence of the Magnetization Process of the Kondo Insulator YbB<sub>12</sub> |
| title_short | The Temperature Dependence of the Magnetization Process of the Kondo Insulator YbB<sub>12</sub> |
| title_sort | temperature dependence of the magnetization process of the kondo insulator ybb sub 12 sub |
| topic | kondo insulator insulator-metal transition high magnetic field |
| url | https://www.mdpi.com/2073-4352/10/1/26 |
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