  Andreev reflection (AR) refers to the electron-hole conversion at the normal
metal-superconductor interface. In a three-dimensional metal with spherical
Fermi surface, retro (specular) AR can occur with the sign reversal of all
three (a single) components of particle velocity. Here, we predict a novel type
of AR with the inversion of two velocity components, dubbed
"anomalous-trajectory Andreev reflection" (AAR), which can be realized in a
class of materials with torus-shaped Fermi surface, such as doped nodal line
semimetals. For its toroidal circle perpendicular to the interface, the Fermi
torus doubles the AR channels and generates multiple AR processes. In
particular, the AAR and retro AR are found to dominate electron transport in
the light and heavy doping regimes, respectively. We show that the AAR visibly
manifests as a ridge structure in the spatially resolved nonlocal conductance,
in contrast to the peak structure for the retro AR. Our work opens a new avenue
for the AR spectroscopy and offers a clear transport signature of torus-shaped
Fermi surface.
