Van der Waals epitaxial growth of air-stable CrSe2 nanosheets with thickness-tunable magnetic order

Li, Bo; Wan, Zhong; Wang, Cong; Chen, Peng; Huang, Bevin; Cheng, Xing; Qian, Qi; Li, Jia; Zhang, Zhengwei; Sun, Guangzhuang; Zhao, Bei; Ma, Hongchao; Wu, Ruixia; Wei, Zhongming; Liu, Yuan; Liao, Lei; Yu, Yongqin; Huang, Yu; Xu, Xiaodong; Duan, Xidong; Duan, Xiangfeng

doi:10.1038/s41563-021-00927-2

Cited by 226 publications

(248 citation statements)

References 66 publications

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“…Note that, as the temperature of 2H-TaSe 2 monolayer decreases, the E 2g mode begins to move to high wave number owing to the phonon hardening until the temperature is below ≈125 K, and then E 2g shifts to a low wave number with further decreasing Reproduced with permission. [31] Copyright 2021, Springer Nature. g,h) OM images of Hall-bar devices of g) tetragonal and h) hexagonal FeTe nanoplates, respectively.…”

Section: Charge-density-wave Phase In 2d M-tmdsmentioning

confidence: 99%

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2D Metallic Transition‐Metal Dichalcogenides: Structures, Synthesis, Properties, and Applications

Zhao

Shen

Zhang

et al. 2021

Adv Funct Materials

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124

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2D materials and the associated heterostructures define an ideal material platform for investigating physical and chemical properties, and exhibiting new functional applications in (opto)electronic devices, electrocatalysis, and energy storage. 2D transition metal dichalcogenides (2D TMDs), as a member of the 2D materials family including 2D semiconducting TMDs (s-TMDs) and 2D metallic/semimetallic TMDs (m-TMDs) have attracted considerable attention in the scientific community. Over the past decade, the 2D s-TMDs have been extensively researched and reviewed elsewhere. Because of their distinctive physical properties including intrinsic magnetism, chargedensity-wave order and superconductivity, and potential applications, such as high-performance electronic devices, catalysis, and as metal electrode contacts, 2D m-TMDs have grabbed widespread attention in recent years. However, reviews demonstrating the m-TMDs systematically and comprehensively have been rarely reported. Here, the recent advances in 2D m-TMDs in the aspects of their unique structures, synthetic approaches, distinctive physical properties, and functional applications are highlighted. Finally, the current challenges and perspectives are discussed.

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Section: Charge-density-wave Phase In 2d M-tmdsmentioning

confidence: 99%

mentioning

confidence: 99%

2D Metallic Transition‐Metal Dichalcogenides: Structures, Synthesis, Properties, and Applications

Zhao

Shen

Zhang

et al. 2021

Adv Funct Materials

Self Cite

124

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show abstract

Section: Intrinsic Magnetism In 2d Tmcsmentioning

confidence: 99%

“…Significant progress has also been made in the synthesis of 2D layered chromium dichacolgenides (CrX 2 ) by CVD, for example, magnetic CrSe 2 64 and CrTe 2 , 65 which demonstrate outstanding air stability. Duan's group reported the synthesis of 2D CrSe 2 nanosheets with tunable thickness down to the ML limit on dangling‐bond‐free 2D WSe 2 64 . The thickness‐dependent magnetic order, that is, the evolution from weak ferromagnetism in mono‐, bi‐ and tri‐layer to strong ferromagnetism in thicker CrSe 2 nanosheets, is largely governed by the charge transfer from the WSe 2 substrate and the interlayer coupling within the CrSe 2 crystals.…”

Section: Intrinsic Magnetism In 2d Tmcsmentioning

confidence: 99%

Two‐dimensional magnetic transition metal chalcogenides

2021

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The field of two‐dimensional (2D) magnets has expanded rapidly during the past several years since the first demonstration of intrinsic 2D magnetism in atomically thin CrI3 and Cr2Ge2Te6 in 2017. 2D transition metal chalcogenides (TMCs), a class of strongly correlated materials, have exhibited a wide variety of novel electronic and optical properties, and more recently magnetism. Here, we review recent experimental progress achieved in the growth of 2D magnetic TMC materials using chemical vapor deposition and molecular beam epitaxy methods. Outstanding examples include the demonstration of room temperature intrinsic and extrinsic ferromagnetism in monolayer VSe2, MnSe2, Cr3Te4, V‐doped WSe2, and so on. A brief discussion on the origin of the exotic magnetic properties and emergent phenomena is also presented. Finally, we summarize the remaining challenges and future perspective on the development of 2D magnetic materials for next‐generation spintronic devices.

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“…Chromium selenide systems are promising as electrochemical sensors [11], thermoelectrics for intermediate-temperature applications [9,12], and intermediate-power generation [13] but also for their 2D counterparts that exhibit distinct, thickness dependent ferromagnetic properties [14]. The last ones can find possible applications in spintronics too [15].…”

Section: Introductionmentioning

confidence: 99%

Micrometer Sized Hexagonal Chromium Selenide Flakes for Cryogenic Temperature Sensors

Buruiana

Sava

Iacob

et al. 2021

Sensors

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Nanoscale thermometers with high sensitivity are needed in domains which study quantum and classical effects at cryogenic temperatures. Here, we present a micrometer sized and nanometer thick chromium selenide cryogenic temperature sensor capable of measuring a large domain of cryogenic temperatures down to tenths of K. Hexagonal Cr-Se flakes were obtained by a simple physical vapor transport method and investigated using scanning electron microscopy, energy dispersive X-ray spectrometry and X-ray photoelectron spectroscopy measurements. The flakes were transferred onto Au contacts using a dry transfer method and resistivity measurements were performed in a temperature range from 7 K to 300 K. The collected data have been fitted by exponential functions. The excellent fit quality allowed for the further extrapolation of resistivity values down to tenths of K. It has been shown that the logarithmic sensitivity of the sensor computed over a large domain of cryogenic temperature is higher than the sensitivity of thermometers commonly used in industry and research. This study opens the way to produce Cr-Se sensors for classical and quantum cryogenic measurements.

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Van der Waals epitaxial growth of air-stable CrSe2 nanosheets with thickness-tunable magnetic order

Cited by 226 publications

References 66 publications

2D Metallic Transition‐Metal Dichalcogenides: Structures, Synthesis, Properties, and Applications

2D Metallic Transition‐Metal Dichalcogenides: Structures, Synthesis, Properties, and Applications

Two‐dimensional magnetic transition metal chalcogenides

Micrometer Sized Hexagonal Chromium Selenide Flakes for Cryogenic Temperature Sensors

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