Tunable Positive to Negative Magnetoresistance in Atomically Thin WTe2.
Tunable Positive to Negative Magnetoresistance in Atomically Thin WTe2.
复制标题
原子薄 WTe2 中的可调谐正负磁阻。
DOI:
10.1021/acs.nanolett.6b04194
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发表时间:
2017-01
期刊:
影响因子:
--
通讯作者:
Xiu Faxian
中科院分区:
文献类型:
--
作者:
Zhang Enze;Chen Rui;Huang Ce;Yu Jihai;Zhang Kaitai;Wang Weiyi;Liu Shanshan;Ling Jiwei;Wan Xiangang;Lu Hai-Zhou;Xiu Faxian
Transitional metal ditelluride WTe2 has been extensively studied owing to its intriguing physical properties like nonsaturating positive magnetoresistance and being possibly a type-II Weyl semimetal. While surging research activities were devoted to the understanding of its bulk properties, it remains a substantial challenge to explore the pristine physics in atomically thin WTe2. Here, we report a successful synthesis of mono- to few-layer WTe2 via chemical vapor deposition. Using atomically thin WTe2 nanosheets, we discover a previously inaccessible ambipolar behavior that enables the tunability of magnetoconductance of few-layer WTe2 from weak antilocalization to weak localization, revealing a strong electrical field modulation of the spin-orbit interaction under perpendicular magnetic field. These appealing physical properties unveiled in this study clearly identify WTe2 as a promising platform for exotic electronic and spintronic device applications.
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