Chiral p-wave pairing of ultracold fermionic atoms due to a quadratic band touching<xref rid="cpb_27_2_027402fn1" ref-type="fn">*</xref> <fn id="cpb_27_2_027402fn1"> <label>*</label> <p>Project supported by the National Natural Science Foundation of China (Grant No. 11675116) and the Soochow University, China.</p> </fn>

Chiral p-wave pairing of ultracold fermionic atoms due to a quadratic band touching* *

Project supported by the National Natural Science Foundation of China (Grant No. 11675116) and the Soochow University, China.

Wang Hai-Xiao, Liu Zi-Heng, Jiang Jian-Hua^†

(color online) (a) Checkerboard and (b) kagome lattices. In the checkerboard lattice, the hopping amplitudes along the blue (solid), red (dotted), and green (dashed) links are t′, t′′, and t, respectively. (c) Band structure and band filling near half-filling with t_x = t_z in the checkerboard lattice. k is measured from the quadratic band touching point K. (d) Direction of the pseudo-spin field (h_x,h_z) (also represents the pseudo-spin polarization direction) on the Fermi surface of a quadratic band touching system.