TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.14.5.137
TI  - Hydrodynamics with triangular point group
PY  - 2023/05/31
UR  - https://scipost.org/SciPostPhys.14.5.137
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 14
IS  - 5
SP  - 137
A1  - Friedman, Aaron J.
AU  - Cook, Caleb Q.
AU  - Lucas, Andrew
AB  - When continuous rotational invariance of a two-dimensional fluid is broken to the discrete, dihedral subgroup $D_6$ - the point group of an equilateral triangle - the resulting anisotropic hydrodynamics breaks both spatial-inversion and time-reversal symmetries, while preserving their combination. In this work, we present the hydrodynamics of such $D_6$-symmetric fluids, identifying new symmetry-allowed dissipative terms in the hydrodynamic equations of motion. We propose two experiments - both involving high-purity solid-state materials with $D_6$-invariant Fermi surfaces - that are sensitive to these new coefficients in a $D_6$-invariant electron fluid. In particular, we propose a local current imaging experiment (which is present-day realizable with nitrogen vacancy center magnetometry) in a hexagonal device, whose $D_6$-exploiting boundary conditions enable the unambiguous detection of these novel transport coefficients.
ER  -

@Article{10.21468/SciPostPhys.14.5.137,
	title={{Hydrodynamics with triangular point group}},
	author={Aaron J. Friedman and Caleb Q. Cook and Andrew Lucas},
	journal={SciPost Phys.},
	volume={14},
	pages={137},
	year={2023},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.14.5.137},
	url={https://scipost.org/10.21468/SciPostPhys.14.5.137},
}