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Related Concept Videos

The Phosphorus Cycle01:21

The Phosphorus Cycle

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Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems.
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Chirality at Nitrogen, Phosphorus, and Sulfur02:30

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Chirality is most prevalent in carbon-based tetrahedral compounds, but this important facet of molecular symmetry extends to sp3-hybridized nitrogen, phosphorus and sulfur centers, including trivalent molecules with lone pairs. Here, the lone pair behaves as a functional group in addition to the other three substituents to form an analogous tetrahedral center that can be chiral.
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Dimensional Analysis03:40

Dimensional Analysis

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Dimensional analysis, also known as the factor label method, is a versatile approach for mathematical operations. The main principle behind this approach is: the units of quantities must be subjected to the same mathematical operations as their associated numbers. This method can be applied to computations ranging from simple unit conversions to more complex and multi-step calculations involving several different quantities and their units.
Conversion Factors and Dimensional Analysis
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Dimensional Analysis01:27

Dimensional Analysis

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Dimensional analysis is a valuable technique in fluid mechanics for simplifying complex problems by reducing them into dimensionless groups. These groups capture the essential relationships between the variables involved, allowing researchers and engineers to analyze fluid flow without dealing with each variable individually. This approach reduces the number of independent variables, allowing for easier analysis and better understanding of physical phenomena.
In fluid mechanics, dimensional...
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Dimensional Analysis01:23

Dimensional Analysis

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Dimensional analysis is a powerful tool that is used in physics and engineering to understand and predict the behavior of physical systems. The basic idea behind dimensional analysis is to express physical quantities in terms of fundamental dimensions such as the mass, length, and time. Derived dimensions like the velocity, acceleration, and force are derived from the combinations of these fundamental dimensions.
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Dimensional Analysis02:19

Dimensional Analysis

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The concept of dimension is important because every mathematical equation linking physical quantities must be dimensionally consistent, implying that mathematical equations must meet the following two rules. The first rule is that, in an equation, the expressions on each side of the equal sign must have the same dimensions. This is fairly intuitive since we can only add or subtract quantities of the same type (dimension). The second rule states that, in an equation, the arguments of any of the...
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Scalable Quantum Integrated Circuits on Superconducting Two-Dimensional Electron Gas Platform
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Superconductivity in two-dimensional phosphorus carbide (β0-PC).

Bao-Tian Wang1, Peng-Fei Liu, Tao Bo

  • 1Institute of High Energy Physics, Chinese Academy of Sciences (CAS), Beijing 100049, China. wangbt@ihep.ac.cn pfliu@ihep.ac.cn.

Physical Chemistry Chemical Physics : PCCP
|April 28, 2018
PubMed
Summary
This summary is machine-generated.

Two-dimensional phosphorus carbide (β0-PC) is a newly discovered intrinsic superconductor. This material exhibits superconductivity at approximately 13 Kelvin, tunable via strain or doping.

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Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Solid State Chemistry

Background:

  • Two-dimensional (2D) boron is theoretically predicted to be a superconductor.
  • Intrinsic superconductivity in 2D carbon and phosphorus materials remains unexplored.
  • The potential for superconductivity in mixed 2D materials is an active area of research.

Purpose of the Study:

  • To investigate the potential superconductivity of a 2D phosphorus carbide (β0-PC) monolayer.
  • To elucidate the underlying mechanism of superconductivity in this material.
  • To explore methods for tuning its superconducting properties.

Main Methods:

  • First-principles calculations were employed to study electronic structure.
  • Phonon dispersion and electron-phonon coupling were analyzed.
  • The impact of strain and carrier doping on superconductivity was theoretically assessed.

Main Results:

  • The metallic β0-PC monolayer was identified as an intrinsic phonon-mediated superconductor.
  • An estimated superconducting critical temperature (Tc) of ~13 K was determined.
  • Out-of-plane phosphorus vibrations significantly contribute to electron-phonon coupling, and a Kohn anomaly was observed.

Conclusions:

  • β0-PC is a promising 2D superconducting material.
  • Superconducting properties of β0-PC can be modulated through external stimuli like strain and doping.
  • This discovery opens new avenues for exploring 2D superconductors.