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arXiv 2501.03591cond-mat.str-elcond-mat.mtrl-sci
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通过电双电层栅极对Ca$_{2}$RuO$_{4}$进行金属化

Metallisation of the Mott Insulator Ca$_{2}$RuO$_{4}$ using Electric Double-Layer Gating

Kurume Institute of Technology(久留米工业大学);Institute for Materials Research, Tohoku University(东北大学材料科学研究所)

Tatsuhiro Sakami, Hiroki Ogura, Akihiro Ino, Takumi Ouchi, Tsutomu Nojima, Fumihiko Nakamura

AI总结:

通过电双电层栅极技术,研究了Ca$_{2}$RuO$_{4}$在高电压下的电阻变化,发现其可能与体相结构变化相关。

摘要:

为验证是否可以通过单独施加电场将Mott绝缘体Ca2RuO4切换,无论是否有电流流动,我们采用电双电层栅极(EDLG)进行金属化。由于EDLG引起的电阻变化仅在施加超过+3 V的正栅极电压时发生。幅度达到初始值的约97%的减少,难以解释为表面金属化,很可能与体相结构变化有关。

英文摘要:

To verify whether the Mott insulator Ca2RuO4 can be switched by applying electric-field alone, regardless of current flow, we employ metallisation using electric double-layer gating (EDLG). The resistance change due to EDLG occurs only when positive gate-voltage above +3 V is applied. The amplitude of the reduction, reaching ~97% of the initial value, is difficult to interpret as surface metallisation and is likely related to structural change in bulk.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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