Selected transport, vibrational, and mechanical properties of low-dimensional systems under strain

Celebonovic, V.; Pešić, Jelena; Gajić, Radoš; Vasić, Borislav; Matković, Aleksandar

doi:10.1063/1.5054120

Cited by 8 publications

(9 citation statements)

References 84 publications

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“…According to some theoretical models, T c is predicted to range up to room temperature if the DOS is reconstructed, forming so-called flat bands in graphene [ 59 , 60 , 61 ]. It is supposed that such a DOS reconstruction will occur if graphene, multilayer graphene, or carbon flakes are subjected to mechanical stress [ 62 , 63 , 64 , 65 ].…”

Section: Resultsmentioning

confidence: 99%

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The Magnetization of a Composite Based on Reduced Graphene Oxide and Polystyrene

et al. 2021

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The use of reduced graphene oxide (r-GO) is a promising way of fabricating organic–inorganic composites with unique electrical and magnetic properties. In our work, polystyrene/r-GO composites were synthesized, in which both the components are linked together by covalent bonds. The r-GO used differs from the graphene obtained from graphite through mechanical exfoliation using the ‘scotch tape’ by presenting many structural defects. Binding in the composite structure between the components was confirmed by infrared spectroscopy. Elemental analysis was carried out by energy dispersive X-ray analysis. Scanning electron microscopy, X-ray diffraction, and Raman spectroscopy were used to monitor the 2D-order in exfoliated r-GO galleries. Using a vibrating-sample magnetometer, we have shown that the composite magnetization loops demonstrate type-II superconductivity up to room temperature due to r-GO flakes. We believe that a strain field in the r-GO flakes covalently binding to a polymeric matrix is responsible for the superconductivity phenomena.

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Section: Resultsmentioning

confidence: 99%

“…Moreover, the superconducting critical temperature cannot be higher than 23 K under normal conditions in the standard BCS theory framework. Therefore, to understand superconductivity at room temperature, new theoretical scenarios must be created [59][60][61][62][63].…”

Section: Discussionmentioning

confidence: 99%

The Magnetization of a Composite Based on Reduced Graphene Oxide and Polystyrene

et al. 2021

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“…Strain engineering has also been demonstrated theoretically and experimentally to be able to change the superconducting transition temperature ( T c ) or superconducting gap‐closing temperature ( T g ) of conventional and unconventional superconductors. [ 54–66 ] For instance, Tresca et al studied the effect of in‐plane strain on electronic, mechanical, and magnetic properties of monolayer FeSe and FeTe on SrTiO 3 substrate, using the first‐principles density functional theory. [ 55 ] This study predicted that both FeSe and FeTe monolayer are mechanically flexible to hold large strains up to 30% and a superconducting transition is expected if FeTe monolayer can be strained higher than 9%.…”

Section: Tunable Properties Of 2d Materials By Strain Engineeringmentioning

confidence: 99%

“…Strain engineering has also been demonstrated theoretically and experimentally to be able to change the superconducting transition temperature (T c ) or superconducting gap-closing temperature (T g ) of conventional and unconventional superconductors. [54][55][56][57][58][59][60][61][62][63][64][65][66] For instance, Tresca et al studied the effect of inplane strain on electronic, mechanical, and magnetic properties [44] Copyright 2021, The Authors, published by Springer Nature. c) Multilayer WSe 2 strained on bent PET showed d) shift in flat-band voltage.…”

Section: Tunable Superconductivity By Strain Engineeringmentioning

confidence: 99%

Recent Progress in Strain Engineering on Van der Waals 2D Materials: Tunable Electrical, Electrochemical, Magnetic, and Optical Properties

Sadi

et al. 2023

Advanced Materials

103

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counterparts. [2] Therefore, 2D materials are ideal for flexible optoelectronics and have the potential to be used in the next-generation ultrathin electronic and optoelectronic devices. [1] The concept of 2D materials was first realized when graphene was found in 2004. [4] Graphene has attracted extensive attention for its excellent electrical, optical, and mechanical properties. [4][5][6] They have been investigated for various technological applications, including spintronics, sensors, optoelectronics, supercapacitors, and solar cells, etc. [5,7] Besides graphene, other 2D materials, such as h-BN, phosphorene, silicene, germanene, and transition metal dichalcogenides (molybdenum disulfide (MoS 2 ), molybdenum diselenide (MoSe 2 ), tungsten disulfide (WS 2 ), and tungsten diselenide (WSe 2 ), etc.), have been studied extensively in recent years. [1,[8][9][10][11] The thickness of single-layer 2D materials is usually on the order or less than 1 nm. At the same time, their lateral sizes could reach much larger size (from microns to even inches), and 2D materials can be transferred to different substrates before subsequent processing or follow-up measurements for characterizations or device applications.Strain engineering is a promising way to tune the electrical, electrochemical, magnetic, and optical properties of 2D materials, with the potential to achieve high-performance 2D-material-based devices ultimately. This review discusses the experimental and theoretical results from recent advances in the strain engineering of 2D materials. Some novel methods to induce strain are summarized and then the tunable electrical and optical/optoelectronic properties of 2D materials via strain engineering are highlighted, including particularly the previously less-discussed strain tuning of superconducting, magnetic, and electrochemical properties. Also, future perspectives of strain engineering are given for its potential applications in functional devices. The state of the survey presents the ever-increasing advantages and popularity of strain engineering for tuning properties of 2D materials. Suggestions and insights for further research and applications in optical, electronic, and spintronic devices are provided.

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“…According to some theoretical models, Tc is predicted to range up to room temperature if the DOS is reconstructed, forming so-called flat bands in graphene [48][49][50][51]. It is supposed that such a DOS reconstruction will occur if graphene, multilayer graphene or carbon flakes are subjected to mechanical stress [52][53][54][55]. As mentioned in the introduction, the photoreduction process results in forming numerous submicron holes within the UV- According to the dependence M(H) obtained, polystyrene exhibits ferromagnetic behavior characteristic of the entire investigated temperature range (5-300 K).…”

Section: Systemmentioning

confidence: 99%

Magnetization of Ultraviolet-Reduced Graphene Oxide Flakes in Composites Based on Polystyrene

et al. 2021

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This work presents our study results of the magnetization of multilayer UV-reduced graphene oxide (UV-rGO), polymer matrix (polystyrene), and a conjugated composite based on them. The mesoscopic structure of the composites synthesized in this work was studied by such methods as X-ray diffraction, SEM, as well as NMR-, IR- and Raman spectroscopy. The magnetization of the composites under investigation and their components was measured using a vibrating-sample magnetometer. It has been shown that the UV-reduction process leads to the formation of many submicron holes distributed inside rGO flakes, which can create edge defects, causing possibly magnetic order in the graphite samples under investigation on the mesoscopic level. This article provides an alternative explanation for the ferromagnetic hysteresis loop in UV-rGO on the base of superconductivity type-II.

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Selected transport, vibrational, and mechanical properties of low-dimensional systems under strain

Cited by 8 publications

References 84 publications

The Magnetization of a Composite Based on Reduced Graphene Oxide and Polystyrene

The Magnetization of a Composite Based on Reduced Graphene Oxide and Polystyrene

Recent Progress in Strain Engineering on Van der Waals 2D Materials: Tunable Electrical, Electrochemical, Magnetic, and Optical Properties

Magnetization of Ultraviolet-Reduced Graphene Oxide Flakes in Composites Based on Polystyrene

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