研究目的
Investigating the electrical transport properties and interference effects in Weyl semi-metals (WSMs) under time-reversal symmetry breaking and inversion symmetry breaking conditions.
研究成果
The study demonstrates that electrical transport in WSMs can exhibit interference effects akin to a Fabry-Perot interferometer in momentum space, with the interference phase dependent on the distance between Weyl nodes. The findings highlight the role of chiral nodes and orbital pseudo-spin in governing transport properties, suggesting potential applications in tuning conductance through external driving mechanisms.
研究不足
The study is theoretical and computational, lacking experimental validation. The models assume ideal conditions without considering real-world material imperfections or external noise sources that could affect the interference patterns.
1：Experimental Design and Method Selection:
The study uses a theoretical model to simulate electrical transport across a WSM with two and four Weyl nodes, analyzing the interference effects in momentum space.
2：Sample Selection and Data Sources:
The study is based on theoretical models of WSMs, specifically focusing on minimal models for time-reversal symmetry breaking and inversion symmetry breaking WSMs.
3：List of Experimental Equipment and Materials:
The study is computational, utilizing theoretical models and Green's function techniques for analysis.
4：Experimental Procedures and Operational Workflow:
The methodology involves constructing a lattice version of the four-band model for WSMs, calculating the current as a function of internodal distance, and analyzing the interference phase and oscillations in conductance.
5：Data Analysis Methods:
The analysis employs the Green's function technique to compute conductances through the WSM, focusing on the direction of the separation of the Weyl nodes and perpendicular directions.
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