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Related Concept Videos

Chirality02:25

Chirality

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Chirality is a term that describes the lack of mirror symmetry in an object. In other words, chiral objects cannot be superposed on their mirror images. For example, our feet are chiral, as the mirror image of the left foot, the right foot, cannot be superposed on the left foot.
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
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Types Of Superconductors01:28

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A superconductor is a substance that offers zero resistance to the electric current when it drops below a critical temperature. Zero resistance is not the only interesting phenomenon as materials reach their transition temperatures. A second effect is the exclusion of magnetic fields. This is known as the Meissner effect. A light, permanent magnet placed over a superconducting sample will levitate in a stable position above the superconductor. High-speed trains that levitate on strong...
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Superconductor01:24

Superconductor

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A substance that reaches superconductivity, a state in which magnetic fields cannot penetrate, and there is no electrical resistance, is referred to as a superconductor. In 1911, Heike Kamerlingh Onnes of Leiden University, a Dutch physicist, observed a relation between the temperature and the resistance of the element mercury. The mercury sample was then cooled in liquid helium to study the linear dependence of resistance on temperature. It was observed that, as the temperature decreased, the...
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Trends in Lattice Energy: Ion Size and Charge02:54

Trends in Lattice Energy: Ion Size and Charge

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An ionic compound is stable because of the electrostatic attraction between its positive and negative ions. The lattice energy of a compound is a measure of the strength of this attraction. The lattice energy (ΔHlattice) of an ionic compound is defined as the energy required to separate one mole of the solid into its component gaseous ions. For the ionic solid sodium chloride, the lattice energy is the enthalpy change of the process:
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Structures of Solids02:22

Structures of Solids

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Solids in which the atoms, ions, or molecules are arranged in a definite repeating pattern are known as crystalline solids. Metals and ionic compounds typically form ordered, crystalline solids. A crystalline solid has a precise melting temperature because each atom or molecule of the same type is held in place with the same forces or energy. Amorphous solids or non-crystalline solids (or, sometimes, glasses) which lack an ordered internal structure and are randomly arranged. Substances that...
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Prochirality02:05

Prochirality

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The concept of prochirality leads to the nomenclature of the individual faces of a molecule and plays a crucial role in the enantioselective reaction. It is a concept where two or more achiral molecules react to produce chiral products. A typical process is the reaction of an achiral ketone to generate a chiral alcohol. Here, the achiral reactant reacts with an achiral reducing agent, sodium borohydride, to generate an equimolar mixture of the chiral enantiomers of the product. For example, an...
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Topological Chiral Superconductivity in the Triangular-Lattice Hofstadter-Hubbard Model.

Feng Chen1,2,3, Wen O Wang4, Jia-Xin Zhang4,5

  • 1The Chinese University of Hong Kong, School of Science and Engineering, Shenzhen, Guangdong, 518172, People's Republic of China.

Physical Review Letters
|March 13, 2026
PubMed
Summary
This summary is machine-generated.

We discovered a robust chiral superconducting phase in Moiré materials, driven by electronic correlations and magnetic flux. This topological superconductivity emerges from doping topological Chern bands or magnetic-flux-induced chiral spin liquid states.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Quantum Mechanics

Background:

  • Moiré materials offer unique platforms for exploring strong electronic correlation and magnetic flux effects.
  • Understanding the interplay of these phenomena is crucial for developing novel quantum states.

Purpose of the Study:

  • Investigate the lightly doped Hofstadter-Hubbard model on a triangular lattice.
  • Identify and characterize emergent electronic phases, particularly superconductivity.

Main Methods:

  • Large-scale density matrix renormalization group (DMRG) simulations.
  • Determinantal quantum Monte Carlo (DQMC) simulations.

Main Results:

  • Found strong evidence for a robust chiral superconducting (SC) phase.
  • Observed dominant power-law pairing correlations and a quantized spin Chern number.
  • SC phase emerges at weak interactions and strengthens with intermediate strengths (U) across various doping levels.

Conclusions:

  • The study provides theoretical insights into topological superconductivity in Moiré materials.
  • This superconductivity can arise from doped topological Chern bands or magnetic-flux-induced chiral spin liquid states.