2021-11-26

Non rare earth compounds: new double-layer artificial sheet materials or provide support for a new platform for quantum computing

By yqqlm yqqlm

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c2f1eeabe9409de - Non rare earth compounds: new double-layer artificial sheet materials or provide support for a new platform for quantum computing

research configuration figure – 1: artificial heavy fermion heterostructure

starting from seemingly ordinary materials, researchers pointed out a new mass state. This discovery stems from his efforts to create a quantum spin liquid, which can be used to study emerging quantum phenomena such as gauge theory

specifically, it involves the manufacture of tantalum disulfide with single-layer atomic thickness, and the double-layer process is used. When researchers carefully examined the structure of the “island”, they found that the interaction between the two layers triggered the so-called “Kondo effect” – the fermion subsystem that leads to the macroscopic entanglement of matter

Non rare earth compounds: new double-layer artificial sheet materials or provide support for a new platform for quantum computing

research figure – 2: Kondo effect (resonance) in vertical heterostructure

viliam VA ň O said in an interview that the quantum properties of this new ultra-thin double-layer material will help to improve the design of quantum computers and promote the research on superconductivity and quantum criticality

the so-called “Kondo effect” refers to the interaction between magnetic impurities and electrons, which leads to the change of material resistance with temperature. Such performance, it seems that they seem to have greater quality

so physicists call these compounds heavy fermion materials, and the related phenomenon is also a sign of materials containing rare earth elements

Non rare earth compounds: new double-layer artificial sheet materials or provide support for a new platform for quantum computing(1)

research diagram – 3: heavy fermion hybrid gap in vertical heterostructures

heavy fermion materials are valued in many fields of cutting-edge Physics (including the study of quantum materials). Professor Peter liljeroth pointed out that the academic community has always wanted to deeply study complex quantum materials, but it is often hindered by the properties of natural compounds

therefore, they put forward the manufacturing plan of manually designed materials, which is characterized by easy external adjustment and control, so as to expand the range of strange phenomena that can be seen in the laboratory environment

taking the heavy fermion material that can act as a complementary superconductor as an example, it may help to create more robust qubits under the influence of environmental noise and disturbance, so as to reduce the error rate of quantum computers

Non rare earth compounds: new double-layer artificial sheet materials or provide support for a new platform for quantum computing(2)

research work, doctoral student viliam VA in liljeroth team ň O explained that the heavy fermion material system that can be created in real life can be easily integrated into electronic devices and adjusted externally

it is worth mentioning that although the double-layer ultra-thin materials created by the team are based on tantalum sulfide, the characteristics of the two layers are different – one layer is more like metal, while the other layer with structural changes leads to electrons being located in a regular lattice

the combination of the two eventually gave birth to the physical phenomenon of heavy fermions – which can not be done by any single layer of material

looking ahead, liljeroth team hopes to further explore how each sheet reacts to the rotation of another sheet, and try to modify the coupling between layers to adjust the material to produce quantum critical behavior