The strain effect on superconductivity in phosphorene: a first-principles prediction

Ge, Yanfeng; Wan, Wenhui; Yang, Fan; Yao, Yugui

doi:10.1088/1367-2630/17/3/035008

Cited by 88 publications

(116 citation statements)

References 45 publications

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“…For example, the application of uniaxial stress can break the symmetry and enhance in-plane anisotropy. 72 Other effects include electron-phonon coupling enhancement, 73 superconductivity, 74 semiconductor to metal transition, 75 band gap modification, 15 and direct-indirect band gap transition 12 ( Fig. 5).…”

Section: Effects Of Stress and Mechanical Propertiesmentioning

confidence: 99%

Recent advances in synthesis, properties, and applications of phosphorene

et al. 2017

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Since its first fabrication by exfoliation in 2014, phosphorene has been the focus of rapidly expanding research activities. The number of phosphorene publications has been increasing at a rate exceeding that of other two-dimensional materials. This tremendous level of excitement arises from the unique properties of phosphorene, including its puckered layer structure. With its widely tunable band gap, strong in-plane anisotropy, and high carrier mobility, phosphorene is at the center of numerous fundamental studies and applications spanning from electronic, optoelectronic, and spintronic devices to sensors, actuators, and thermoelectrics to energy conversion, and storage devices. Here, we review the most significant recent studies in the field of phosphorene research and technology. Our focus is on the synthesis and layer number determination, anisotropic properties, tuning of the band gap and related properties, strain engineering, and applications in electronics, thermoelectrics, and energy storage. The current needs and likely future research directions for phosphorene are also discussed. , there has been a quest for new two-dimensional (2D) materials aimed at fully exploring new fundamental phenomena stemming from quantum confinement and size effects. This quest has spurred new areas of research with rapid growth from both theoretical and experimental fronts aimed at technological advancements. Among recently discovered 2D materials, phosphorene is one of the most intriguing due to its exotic properties and numerous foreseeable applications.2 This review discusses recent advances in phosphorene research with special emphasis on: (i) fabrication and techniques for rapid identification of the number of layers; (ii) anisotropic behavior; (iii) band gap and property tuning; (iv) strain engineering and mechanical properties; (v) devices and applications; and (vi) future directions.2D materials composed of a single-atom-thick or a singlepolyhedral-thick layer can be grouped into diverse categories.

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Section: Effects Of Stress and Mechanical Propertiesmentioning

confidence: 99%

Recent advances in synthesis, properties, and applications of phosphorene

et al. 2017

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“…The effect of strain on the T c of BP was studied from first-principles using the Eliashberg spectral function [33][34][35][36][37] . An increase of T c from ∼ 3 K to ∼ 16 K was attributed to a B 3g phonon mode and it appeared that a biaxial strain is more efficient in enhancing T c than uniaxial strain 34,36 . In a recent experimental attempt, a BP crystal was intercalated by several alkali metals (Li, K, Rb and Cs, Ca).…”

Section: Introductionmentioning

confidence: 99%

Control of superconducting pairing symmetries in monolayer black phosphorus

2019

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Motivated by recent experimental progress, we study the effect of mechanical deformations on the superconducting pairing symmetries in monolayer black phosphorus (MBP). Starting with phonon-mediated intervalley spin-singlet electron-electron pairing and making use of realistic band parameters obtained through firstprinciples calculations, we show that the application of weak mechanical strain in the plane of MBP can change the effective s-wave and p-wave symmetry of the superconducting correlations into effective d-wave and fwave symmetries, respectively. This prediction of a change in the pairing symmetries might be experimentally confirmed through angular dependence high-resolution tunneling spectroscopy, the Meissner effect, and critical temperature experiments. The idea of manipulating the superconducting symmetry class by applying planar mechanical strain can be extended to other anisotropic materials as well, and may help in providing important information of the symmetries of the order parameter, perhaps even in some high-Tc superconductors.

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“…A monolayer material showing superconductivity can be very useful in the nanoscale superconductor devices [14][15][16][17][18] to achieve single-spin sensitivity for measuring and controlling. Lots of predictions suggested that such superconductivity can be introduced by the metallization of those monolayer materials such as Li atom adsorption on graphene [19,20], hole doping in fully hydrogenated graphene [21], and electron doping in graphene under strain [22], monolayer MoS 2 [23], siliene [24] and phosphorene [25,26]. However, in experiment it seems that only the superconductivity in Li-adsorbed graphene was verified [27].…”

Section: Introductionmentioning

confidence: 99%

Enhanced superconductivity by strain and carrier-doping in borophene: A first principles prediction

Xiao

Shao

et al. 2016

Applied Physics Letters

115

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We predict by first principles calculations that the recently prepared borophene is a pristine twodimensional (2D) monolayer superconductor, in which the superconductivity can be significantly enhanced by strain and charge carrier doping. The intrinsic metallic ground state with high density of states at Fermi energy and strong Fermi surface nesting lead to sizeable electron-phonon coupling, making the freestanding borophene superconduct with Tc close to 19.0 K. The tensile strain can increase Tc to 27.4 K, while the hole doping can notably increase Tc to 34.8 K. The results indicate that the borophene grown on substrates with large lattice parameters or under photoexcitation can show enhanced superconductivity with Tc far more above liquid hydrogen temperature of 20.3 K, which will largely broaden the applications of such novel material.

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The strain effect on superconductivity in phosphorene: a first-principles prediction

Cited by 88 publications

References 45 publications

Recent advances in synthesis, properties, and applications of phosphorene

Recent advances in synthesis, properties, and applications of phosphorene

Control of superconducting pairing symmetries in monolayer black phosphorus

Enhanced superconductivity by strain and carrier-doping in borophene: A first principles prediction

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