抄録
We demonstrate in situ modulation of the superconducting transition temperature (Tc) of LiTi2O4 thin films by ionic liquid gating. 15nm thick LiTi2O4 thin films grown on MgAl2O4 substrates with the pristine Tc of 11.5K was patterned into electric double-layer transistor devices for gating using ionic liquid with or without Li+ ions. The Tc of the LiTi2O4 thin film was found to decrease with a negative gate voltage for gating with either pure ionic liquid or Li+ containing ionic liquid. On the other hand, the recovery of Tc is observed at a positive gate voltage only for gating with the Li+ containing ionic liquid. The present observation suggests the possibility of reversible electrochemical modulation of superconducting properties by lithiation and delithiation.
本文言語 | English |
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論文番号 | 142602 |
ジャーナル | Applied Physics Letters |
巻 | 107 |
号 | 14 |
DOI | |
出版ステータス | Published - 2015 10月 5 |
ASJC Scopus subject areas
- 物理学および天文学(その他)