| Presentation | 2019-10-17 Measurement of electronic density of state of SmB6 using point contact spectroscopy Harada Takurou, Shiga Masanobu, Okimura Kengo, Inagaki Yuji, Iga Fumitoshi, Kawae Tastuya, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | SmB6 is known as Kondo insulator. The electrical resistivity of SmB6 is saturated at low temperature even though energy gap is completely opening. Recently, the origin of that behavior is discussed from the view point of a topological insulator, which has a metallic surface state. To reveal the difference between the bulk and the surface states, we investigated the electronic density of state (DOS) of SmB6 using point contact spectroscopy (PCS). As a result, PCS spectra was changed with decreasing the contact size. The size dependence of the PCS spectra can be explained by the change of the contribution between the metallic surface state and insulating bulk state. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Kondo insulator / SmB6 / topological insulator |
| Paper # | MRIS2019-25 |
| Date of Issue | 2019-10-10 (MRIS) |
| Conference Information | |
| Committee | MRIS / ITE-MMS / IEE-MAG |
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| Conference Date | 2019/10/17(2days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kyushu University (Nishijin Plaza) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Recording Head, Spintronics, etc. |
| Chair | Satoshi Matsunuma(Maxell) / Akihiko Ishii(NHK) / 山口 正洋(東北大) |
| Vice Chair | |
| Secretary | (Toshiba) / (Kinki Univ.) / (Mitsubishi Electric) |
| Assistant | Ikuya Tagawa(Tohoku Inst. of Tech.) / Hiroko Arai(AIST) |
| Paper Information | |
| Registration To | Technical Committee on Magnetic Recording & Information Storage / Technical Group on Multi-media Storage / Technical Meeting on Magnetics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Measurement of electronic density of state of SmB6 using point contact spectroscopy |
| Sub Title (in English) | |
| Keyword(1) | Kondo insulator |
| Keyword(2) | SmB6 |
| Keyword(3) | topological insulator |
| 1st Author's Name | Harada Takurou |
| 1st Author's Affiliation | Kyushu University(Kyushu Univ) |
| 2nd Author's Name | Shiga Masanobu |
| 2nd Author's Affiliation | Kyushu University(Kyushu Univ) |
| 3rd Author's Name | Okimura Kengo |
| 3rd Author's Affiliation | Kyushu University(Kyushu Univ) |
| 4th Author's Name | Inagaki Yuji |
| 4th Author's Affiliation | Kyushu University(Kyushu Univ) |
| 5th Author's Name | Iga Fumitoshi |
| 5th Author's Affiliation | Ibaraki University(Ibaraki Univ) |
| 6th Author's Name | Kawae Tastuya |
| 6th Author's Affiliation | Kyushu University(Kyushu Univ) |
| Date | 2019-10-17 |
| Paper # | MRIS2019-25 |
| Volume (vol) | vol.119 |
| Number (no) | MRIS-232 |
| Page | pp.pp.61-64(MRIS), |
| #Pages | 4 |
| Date of Issue | 2019-10-10 (MRIS) |