| Autor: |
Kocsis, Mátyás, Zheliuk, Oleksandr, Makk, Péter, Tóvári, Endre, Kun, Péter, Tereshchenko, Oleg Evgenevich, Kokh, Konstantin Aleksandrovich, Taniguchi, Takashi, Watanabe, Kenji, Ye, Justin, Csonka, Szabolcs |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Phys. Rev. Research 3, 033253 (2021) |
| Druh dokumentu: |
Working Paper |
| DOI: |
10.1103/PhysRevResearch.3.033253 |
| Popis: |
Non-reciprocal transport, where the left to right flowing current differs from the right to left flowing one, is an unexpected phenomenon in bulk crystals. BiTeBr is a non-centrosymmetric material, with a giant Rashba spin-orbit coupling which presents this unusual effect when placed in an in-plane magnetic field. It has been shown that this effect depends strongly on the carrier density, however, in-situ tuning has not yet been demonstrated. We developed a method where thin BiTeBr flakes are gate tuned via ionic-liquid gating through a thin protective hBN layer. Tuning the carrier density allows a more than \SI{400}{\percent} variation of the non-reciprocal response. Our study serves as a milestone on how a few-atomic-layer-thin van der Waals protection layer allows ionic gating of chemically sensitive, exotic nanocrystals. |
| Databáze: |
arXiv |
| Externí odkaz: |
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