Fabry-Pérot (FP) oscillation arises from interference between coherent paths induced by multiple reflections. In mesoscopic electronic systems, FP oscillation is commonly observed in various one-dimensional (1D) devices. However, in higher-dimensional systems, the presence of numerous transverse channels typically leads to dephasing, which suppresses the overall oscillation. To date, FP oscillation in two-dimensional electronic systems has been reported only in graphene-based devices and, more recently, in the $\mathit{pn}$ junctions of an inverted InAs/GaSb double quantum well. In the latter, electron-hole hybridized band structure plays a crucial role, generating many parallel 1D channels that satisfy nearly identical conditions for constructive interference. In this paper, we propose that this mechanism can be generalized to three-dimensional (3D) systems, such as the nodal line semimetals. We find that due to the spin texture in nodal line semimetals, the electron-to-hole scattering process, and consequently the FP oscillation, are significantly suppressed. However, by introducing ferromagnetic leads, the electron-to-hole scattering can be enhanced, thereby preserving the FP interference. Our results provide a promising way for the implementation of FP oscillation in 3D electric systems.

Close

PrevNext

View figure in article

• Fermi surface
• Quantum interference effects
• Quantum transport
• Nodal-line semimetals