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Photoinduced topological phase transition from a crossing-line nodal semimetal to a multiple-Weyl semimetal

Photoinduced topological phase transition from a crossing-line nodal semimetal to a multiple-Weyl semimetal

We propose a simple scheme to construct a model whose Fermi surface is comprised of crossing-line nodes. The Hamiltonian consists of a normal hopping term and an additional term which is odd under the mirror reflection. The line nodes appear along the mirror-invariant planes, where each line node carries the …