Photoinduced superconducting states in strongly correlated electron systems

Akira Takahashi; Hiroki Gomi; Masaki Aihara

doi:10.1103/PhysRevB.66.115103

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Photoinduced superconducting states in strongly correlated electron systems

Akira Takahashi, Hiroki Gomi, Masaki Aihara

DOI 10.1103/PhysRevB.66.115103 · Physical Review B

T1

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Abstract

We theoretically investigate the properties of multiphoton excited states in strongly correlated two-dimensional electron systems. The effective Hamiltonian of the Hubbard model for the multiphoton excited states is derived assuming strong Coulomb repulsion. Diagonalizing the effective Hamiltonian exactly, the lowest energy state in two-photon excited manifold is calculated in the 20 site two-dimensional square lattice at half filling. Analysis of correlation functions suggests that the antiferromagnetic spin order characteristic of the half filled ground state is destroyed by two-photon excitation, and two different d-wave superconducting states and a spiral spin state are photogenerated.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3Ox Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown