Butterfly-shaped magnetoresistance in van der Waals ferromagnet Fe5GeTe2
We have performed magnetoresistance (MR) measurements on van der Waals ferromagnetic devices using quenched- (Q-) and nonquenched- (NQ-) Fe5GeTe2 crystals. A clear butterfly-shaped hysteresis has been observed for thin-film (less than 6 unit-cell layer) Q- and NQ-Fe5GeTe2 devices, but not for thicke...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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AIP Publishing LLC
2021-02-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/9.0000067 |
| _version_ | 1818449388405522432 |
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| author | Tomoharu Ohta Masashi Tokuda Shuichi Iwakiri Kosuke Sakai Benjamin Driesen Yoshinori Okada Kensuke Kobayashi Yasuhiro Niimi |
| author_facet | Tomoharu Ohta Masashi Tokuda Shuichi Iwakiri Kosuke Sakai Benjamin Driesen Yoshinori Okada Kensuke Kobayashi Yasuhiro Niimi |
| author_sort | Tomoharu Ohta |
| collection | DOAJ |
| description | We have performed magnetoresistance (MR) measurements on van der Waals ferromagnetic devices using quenched- (Q-) and nonquenched- (NQ-) Fe5GeTe2 crystals. A clear butterfly-shaped hysteresis has been observed for thin-film (less than 6 unit-cell layer) Q- and NQ-Fe5GeTe2 devices, but not for thicker film ones. The switching field of the butterfly-shaped MR is consistent with the coercive filed obtained from the Hall measurements. The MR ratio of the butterfly peak reaches about 10% at maximum, which is much larger than that observed with conventional magnetic materials. Such a large MR ratio would be related to magnetic fluctuations due to the complicated magnetic structure in this material. |
| first_indexed | 2024-12-14T20:34:37Z |
| format | Article |
| id | doaj.art-7902a51a823a4ec097c78b583bfa133b |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-14T20:34:37Z |
| publishDate | 2021-02-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-7902a51a823a4ec097c78b583bfa133b2022-12-21T22:48:26ZengAIP Publishing LLCAIP Advances2158-32262021-02-01112025014025014-510.1063/9.0000067Butterfly-shaped magnetoresistance in van der Waals ferromagnet Fe5GeTe2Tomoharu Ohta0Masashi Tokuda1Shuichi Iwakiri2Kosuke Sakai3Benjamin Driesen4Yoshinori Okada5Kensuke Kobayashi6Yasuhiro Niimi7Department of Physics, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, JapanDepartment of Physics, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, JapanDepartment of Physics, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, JapanDepartment of Physics, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, JapanOkinawa Institute of Science and Technology Graduate University, Okinawa 904-0495, JapanOkinawa Institute of Science and Technology Graduate University, Okinawa 904-0495, JapanDepartment of Physics, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, JapanDepartment of Physics, Graduate School of Science, Osaka University, Toyonaka, Osaka 560-0043, JapanWe have performed magnetoresistance (MR) measurements on van der Waals ferromagnetic devices using quenched- (Q-) and nonquenched- (NQ-) Fe5GeTe2 crystals. A clear butterfly-shaped hysteresis has been observed for thin-film (less than 6 unit-cell layer) Q- and NQ-Fe5GeTe2 devices, but not for thicker film ones. The switching field of the butterfly-shaped MR is consistent with the coercive filed obtained from the Hall measurements. The MR ratio of the butterfly peak reaches about 10% at maximum, which is much larger than that observed with conventional magnetic materials. Such a large MR ratio would be related to magnetic fluctuations due to the complicated magnetic structure in this material.http://dx.doi.org/10.1063/9.0000067 |
| spellingShingle | Tomoharu Ohta Masashi Tokuda Shuichi Iwakiri Kosuke Sakai Benjamin Driesen Yoshinori Okada Kensuke Kobayashi Yasuhiro Niimi Butterfly-shaped magnetoresistance in van der Waals ferromagnet Fe5GeTe2 AIP Advances |
| title | Butterfly-shaped magnetoresistance in van der Waals ferromagnet Fe5GeTe2 |
| title_full | Butterfly-shaped magnetoresistance in van der Waals ferromagnet Fe5GeTe2 |
| title_fullStr | Butterfly-shaped magnetoresistance in van der Waals ferromagnet Fe5GeTe2 |
| title_full_unstemmed | Butterfly-shaped magnetoresistance in van der Waals ferromagnet Fe5GeTe2 |
| title_short | Butterfly-shaped magnetoresistance in van der Waals ferromagnet Fe5GeTe2 |
| title_sort | butterfly shaped magnetoresistance in van der waals ferromagnet fe5gete2 |
| url | http://dx.doi.org/10.1063/9.0000067 |
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