Juha Jäykkä, Jarmo Hietarinta, Petri Salo, “Topologically nontrivial configurations associated with Hopf charges investigated in the two-component Ginzburg-Landau model”, Phys. Rev. B, 77, no. 9, 2008, 094509
Sergey S. Pershoguba, Domenico Andreoli, Jiadong Zang, “Electronic scattering off a magnetic hopfion”, Phys. Rev. B, 104, no. 7, 2021, 075102
Piers Coleman, Aaditya Panigrahi, Alexei Tsvelik, “Solvable 3D Kondo Lattice Exhibiting Pair Density Wave, Odd-Frequency Pairing, and Order Fractionalization”, Phys. Rev. Lett., 129, no. 17, 2022, 177601
Takashi Yanagisawa, 261, Vortices and Nanostructured Superconductors, 2017, 219
A.P. Protogenov, “Knots and links in the order parameter distributions of strongly correlated systems”, Uspekhi Fizicheskikh Nauk, 176, no. 7, 2006, 689
Y. S. Yerin, A. N. Omelyanchouk, “Coherent current states in a two-band superconductor”, Low Temperature Physics, 33, no. 5, 2007, 401
Rui-Feng Chai, Yue Xie, Ling-Feng Zhang, Guo-Qiao Zha, “Tunable topological defect states and single-quanta skyrmionic configurations in mesoscopic superconducting rectangular systems with spin-orbit interaction”, Phys. Rev. B, 109, no. 16, 2024, 165401
Takuto Kawakami, Takeshi Mizushima, Muneto Nitta, Kazushige Machida, “Stable Skyrmions inSU(2)Gauged Bose-Einstein Condensates”, Phys. Rev. Lett., 109, no. 1, 2012, 015301
N. A. Veretenov, S. V. Fedorov, N. N. Rosanov, “Topological Vortex and Knotted Dissipative Optical 3D Solitons Generated by 2D Vortex Solitons”, Phys. Rev. Lett., 119, no. 26, 2017, 263901
Lisa Freyhult, Antti J. Niemi, “Chirality and fermion number in a knotted soliton background”, Physics Letters B, 557, no. 1-2, 2003, 121