Repeatable Photoinduced Insulator-to-Metal Transition in YttriumOxyhydride Epitaxial Thin Films

被引：15

作者：

Komatsu, Yuya ^{[1
]}

Shimizu, Ryota ^{[1
,3
]}

Sato, Ryuhei ^{[15
,16
]}

Wilde, Markus ^{[2
]}

Nishio, Kazunori ^{[1
]}

Katase, Takayoshi ^{[3
,4
]}

Matsumura, Daiju ^{[5
]}

Saitoh, Hiroyuki ^{[6
]}

Miyauchi, Masahiro ^{[1
]}

Adelman, Jonah R. ^{[7
]}

McFadden, Ryan M. L. ^{[7
,8
,9
]}

Fujimoto, Derek ^{[8
,9
,10
]}

Ticknor, John O. ^{[7
,8
]}

Stachura, Monika ^{[9
]}

McKenzie, Iain ^{[9
,11
]}

Morris, Gerald D. ^{[9
]}

MacFarlane, W. Andrew ^{[7
,8
,9
,12
]}

Sugiyama, Jun ^{[13
,14
]}

Fukutani, Katsuyuki ^{[2
,14
]}

Tsuneyuki, Shinji ^{[15
]}

Hitosugi, Taro ^{[1
]}

机构：

[1] Tokyo Inst Technol, Sch Mat & Chem Technol, Tokyo 1528552, Japan

[2] Univ Tokyo, Inst Ind Sci, Tokyo 1538505, Japan

[3] Japan Sci & Technol Agcy, PRESTO, Kawaguchi, Saitama 3320012, Japan

[4] Tokyo Inst Technol, Lab Mat & Struct, Yokohama, Kanagawa 2268503, Japan

[5] Japan Atom Energy Agcy, Mat Sci Res Ctr, Mikazuki, Hyogo 6795148, Japan

[6] Natl Inst Quantum & Radiol Sci & Technol, Quantum Beam Sci Res Directorate, Mikazuki, Hyogo 6795148, Japan

[7] Univ British Columbia, Dept Chem, Vancouver, BC V6T 1Z1, Canada

[8] Univ British Columbia, Stewart Blusson Quantum Matter Inst, Vancouver, BC V6T 1Z4, Canada

[9] TRIUMF, 4004 Wesbrook Mall, Vancouver, BC V6T 2A3, Canada

[10] Univ British Columbia, Dept Phys & Astron, Columbia, BC V6T 1Z1, Canada

[11] Simon Fraser Univ, Dept Chem, Columbia, BC V5A 1S6, Canada

[12] Univ British Columbia, Dept Chem, Columbia, BC V6T 1Z1, Canada

[13] Comprehens Res Org Sci & Soc CROSS, Neutron Sci & Technol Ctr, Tokai, Ibaraki 3191106, Japan

[14] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

[15] Univ Tokyo, Dept Phys, Tokyo 1130033, Japan

[16] Tohoku Univ, Adv Inst Mat Res, Sendai, Miyagi 9808577, Japan

来源：

CHEMISTRY OF MATERIALS | 2022年 / 34卷 / 08期

关键词：

CONVERSION; CRYSTAL; ION;

D O I：

10.1021/acs.chemmater.1c03450

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Currently, no known material retains its photoinduced metallicconductivity over a long time while also exhibiting repeatable metal-to-insulatorrecovery. Here, we demonstrate such a highly repeatable photoinduced insulator-to-metal transition in yttrium oxyhydride (YOxHy) epitaxial thinfilms. The temperature(T) dependence of the electrical resistivity (rho) of thefilms transforms from theinsulating to the metallic state (d rho/dT> 0) under ultraviolet laser illumination. TheYOxHyfilm recovers its original insulating state when heated (125 degrees C) under an Aratmosphere and regains metallic conductivity when subsequently subjected toultraviolet laser illumination again, showing a repeatable photoinduced insulator-to-metal transition. First-principles calculations show that the itinerant carriers originate from the variations in the charge states of thehydrogen atoms that occupy octahedral interstitial sites. This study indicates that tuning the site occupancy (octahedral/tetrahedral)of the hydrogen atoms exerts a significant effect on the photoresponse of metal hydrides

引用

页码：3616 / 3623

页数：8

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