Direct observation of twisted stacking domains in the van der Waals magnet CrI3

被引:4
作者
Jang, Myeongjin [1 ,2 ]
Lee, Sol [1 ,2 ]
Cantos-Prieto, Fernando [3 ]
Kosic, Ivona [3 ]
Li, Yue [4 ]
McCray, Arthur R. C. [4 ,5 ]
Jung, Min-Hyoung [6 ]
Yoon, Jun-Yeong [1 ,2 ]
Boddapati, Loukya [7 ]
Deepak, Francis Leonard [7 ]
Jeong, Hu Young [8 ,9 ]
Phatak, Charudatta M. [4 ,10 ]
Santos, Elton J. G. [11 ,12 ,13 ]
Navarro-Moratalla, Efren [3 ]
Kim, Kwanpyo [1 ,2 ]
机构
[1] Yonsei Univ, Dept Phys, Seoul, South Korea
[2] Inst Basic Sci IBS, Ctr Nanomed, Seoul, South Korea
[3] Univ Valencia, Inst Ciencia Mol, Paterna, Spain
[4] Argonne Natl Lab, Mat Sci Div, Lemont, IL USA
[5] Northwestern Univ, Appl Phys Program, Evanston, IL USA
[6] Sungkyunkwan Univ SKKU, Dept Energy Sci, Suwon, South Korea
[7] Int Iberian Nanotechnol Lab, Nanostruct Mat Grp, Braga, Portugal
[8] Ulsan Natl Inst Sci & Technol, Grad Sch Semicond Mat & Devices Engn, Ulsan, South Korea
[9] Ulsan Natl Inst Sci & Technol, UNIST Cent Res Facil, Ulsan, South Korea
[10] Northwestern Univ, Dept Mat Sci & Engn, Evanston, IL USA
[11] Univ Edinburgh, Inst Condensed Matter Phys & Complex Syst, Sch Phys & Astron, Edinburgh, Scotland
[12] Univ Edinburgh, Higgs Ctr Theoret Phys, Edinburgh, Scotland
[13] Donostia Int Phys Ctr DIPC, Donostia San Sebastian, Spain
基金
英国工程与自然科学研究理事会; 欧洲研究理事会; 新加坡国家研究基金会;
关键词
FERROMAGNETISM; CRYSTAL;
D O I
10.1038/s41467-024-50314-z
中图分类号
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号
07 ; 0710 ; 09 ;
摘要
Van der Waals (vdW) stacking is a powerful technique to achieve desired properties in condensed matter systems through layer-by-layer crystal engineering. A remarkable example is the control over the twist angle between artificially-stacked vdW crystals, enabling the realization of unconventional phenomena in moir & eacute; structures ranging from superconductivity to strongly correlated magnetism. Here, we report the appearance of unusual 120 degrees twisted faults in vdW magnet CrI3 crystals. In exfoliated samples, we observe vertical twisted domains with a thickness below 10 nm. The size and distribution of twisted domains strongly depend on the sample preparation methods, with as-synthesized unexfoliated samples showing tenfold thicker domains than exfoliated samples. Cooling induces changes in the relative populations among different twisting domains, rather than the previously assumed structural phase transition to the rhombohedral stacking. The stacking disorder induced by sample fabrication processes may explain the unresolved thickness-dependent magnetic coupling observed in CrI3.
引用
收藏
页数:9
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