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Collection of scientific works Nanosystems, nanomaterials, nanotechnologies Year 2025 Volume 23, Issue 2
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F. M. BUKHANKO

Donetsk Institute for Physics and Engineering named after O. O. Galkin, N.A.S. of Ukraine, 46, Nauky Ave., UA-03028 Kyiv, Ukraine

Creating of Bounded Majorana Pairs in Superconducting Net of Quantum Nanowires in SmMnO3+δ

423–435 (2025)

PACS numbers: 73.63.Nm, 74.78.Na, 75.30.Fv, 75.47.Lx, 75.60.Ej, 81.07.Vb, 85.35.Be

In this work, the formation of a superconducting network of quantum nanowires in SmMnO3+δ manganites in two hidden topological states CSL1 and CSL2 of a chiral quantum spin liquid is experimentally studied. As believed, the states of bound pairs of Majorana fermions are trapped at the two ends of the quantum nanowire. The formation of nanofragments of 1D coupled charge and spin densities' waves with wave vectors q1||a and q2||b as regards directions in the crystal lattice within the magnetic fields H ≥ 100 Oe indicates formation in ab planes of 2D quantum-nanowires' net. Within the weak magnetic fields H = 100 Oe, 350 Oe and 1 kOe, the continuous spectrum of the thermal excitations of bounded Majorana pairs in SmMnO3+δ in temperature interval of 4.2–12 K is divided into two low-energy Landau zones with numbers n = 1 and n = 2 with two specific features of magnetization M(T) in the shape of alternating double peaks and truncated Dirac cones.

KEY WORDS: Majorana and Dirac fermions, alternating double peaks and truncated Dirac cones, chiral quantum spin liquid

DOI:  https://doi.org/10.15407/nnn.23.02.0423

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