Topological Semimetal Nanostructures: From Properties to Topotronics

Area of Science:

• Condensed Matter Physics
• Materials Science
• Quantum Phenomena

Background:

• Topological semimetals exhibit bulk Dirac/Weyl cones and surface Fermi arcs.
• Nanostructures offer high surface-to-volume ratios for manipulating topological quantum states.
• These materials are promising for topological electronics (topotronics).

Purpose of the Study:

• To review recent advancements in topological semimetal nanostructures.
• To highlight their quantum transport properties and device applications.
• To discuss future research directions for practical applications.

Main Methods:

• Review of quantum transport properties in topological semimetal nanostructures.
• Introduction to topological semimetal-based electronic devices.
• Discussion of synthesis, manipulation, and device concepts.

Main Results:

• Topological semimetals possess exotic properties like linear energy dispersion and spin-momentum locking.
• Nanostructured topological semimetals are crucial for fabricating practical devices.
• Potential applications include infrared photodetectors, spintronics, and fault-tolerant qubits.

Conclusions:

• Topological semimetal nanostructures are vital for next-generation electronics.
• Future efforts should focus on controllable synthesis and quantum state manipulation.
• Key areas include topological field-effect transistors, spintronics, and quantum computation.