Anomalous superconductivity in black phosphorus under high pressures

Kawamura, Haruki; Shirotani, Ichimin; Tachikawa, K.

doi:10.1016/0038-1098(84)90444-7

Cited by 105 publications

(61 citation statements)

References 14 publications

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“…The superconducting transition temperature of phosphorus under pressure depends on the path in the pressure-temperature diagram [84][85][86]. Black insulating phosphorous with an orthorhombic structure is the most stable form at ambient conditions.…”

Section: Non-metalsmentioning

confidence: 99%

“…Black insulating phosphorous with an orthorhombic structure is the most stable form at ambient conditions. When pressure is increased at liquid-helium temperature black phosphorus transforms to a metallic phase with a simple cubic structure with a T c up to 10.5 K [85]. If red phosphorus is used as the starting material and pressurized at 4.2 K, the T c increases up to 13 K with the onset of transition at 18 K under 30 Figure 10.…”

Section: Non-metalsmentioning

confidence: 99%

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Assembling the puzzle of superconducting elements: a review

Buzea

Robbie

2004

Supercond. Sci. Technol.

151

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Superconductivity in the simple elements is of both technological relevance and fundamental scientific interest in the investigation of superconductivity phenomena. Recent advances in the instrumentation of physics under pressure have enabled the observation of superconductivity in many elements not previously known to superconduct, and at steadily increasing temperatures. This article offers a review of the state of the art in the superconductivity of elements, highlighting underlying correlations and general trends.

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Section: Non-metalsmentioning

confidence: 99%

Section: Non-metalsmentioning

confidence: 99%

Assembling the puzzle of superconducting elements: a review

Buzea

Robbie

2004

Supercond. Sci. Technol.

151

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“…Among the most promising of these 2D materials is an allotrope of phosphorus, known as black phosphorus (BP) [5][6][7][8][9][10][11], which is that element's most stable crystal at room temperature and pressure. In bulk, BP is a narrow-gap semiconductor with a orthorhombic structure that consists of atoms covalently bound into layers coupled by van der Waals interactions [12][13][14][15]. Similar to graphene, BP can be mechanically exfoliated to obtain samples with a few or single layers, with the latter being known as phosphorene.…”

Section: Introductionmentioning

confidence: 99%

Landau levels of single-layer and bilayer phosphorene

2015

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In this work we introduce a low-energy Hamiltonian for single-layer and bilayer black phosphorus that describes the electronic states at the vicinity of the point. The model is based on a recently proposed tight-binding description for electron and hole bands close to the Fermi level. We calculate expressions for the Landau-level spectrum as function of magnetic field, and in the case of bilayer black phosphorus we investigate the effect of an external bias on the electronic band gap. The results showcase the highly anisotropic character of black phosphorus, and in particular for bilayer BP, the presence of bias allows for a field-induced semiconductor-metal transition.

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“…has also been shown to go through a series of phase transitions and becomes superconductive at high pressures [7][8][9] . The band gap of BP has been predicted to increase with decreasing number of layers from 0.3 eV in bulk to 2 eV for single layer [10][11][12] .…”

mentioning

confidence: 99%

Electric field effect in ultrathin black phosphorus

Koenig

Doganov

Schmidt

et al. 2014

Applied Physics Letters

1,195

1,109

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Abstract:Black phosphorus exhibits a layered structure similar to graphene, allowing mechanical exfoliation of ultrathin single crystals. Here we demonstrate few-layer black phosphorus field effect devices on Si/SiO 2 and measure charge carrier mobility in a four-probe configuration as well as drain current modulation in a two-point configuration. We find room-temperature mobilities of up to 300 cm 2 /Vs and drain current modulation of over 10 3 . At low temperatures the on-off ratio exceeds 10 5 and the device exhibits both electron and hole conduction. Using atomic force microscopy we observe significant surface roughening of thin black phosphorus crystals over the course of 1 hour after exfoliation. Main Text:Two-dimensional crystals have gained significant attention since the rise in popularity of graphene 1 . Due to graphene's lack of a band gap the search for a two-dimensional gapped material with high mobility has been highly sought after. Other than graphene black phosphorus (BP) is the only other known monotypic van der Waals crystal 2-4 . Previous studies have shown that bulk BP has high carrier mobility combined with the presence of a direct band gap 5,6 . BP

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Anomalous superconductivity in black phosphorus under high pressures

Cited by 105 publications

References 14 publications

Assembling the puzzle of superconducting elements: a review

Assembling the puzzle of superconducting elements: a review

Landau levels of single-layer and bilayer phosphorene

Electric field effect in ultrathin black phosphorus

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