Photoinduced metastable state with modulated Josephson coupling strengths in Pr0.88LaCe0.12CuO4

S. J. Zhang; Z. X. Wang; D. Wu; Q. M. Liu; L. Y. Shi; T. Lin; S. L. Li; P. C. Dai; T. Dong; N. L. Wang

doi:10.1103/PhysRevB.98.224507

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Photoinduced metastable state with modulated Josephson coupling strengths in Pr0.88LaCe0.12CuO4

S. J. Zhang, Z. X. Wang, D. Wu, Q. M. Liu, L. Y. Shi, T. Lin, S. L. Li, P. C. Dai, T. Dong, N. L. Wang

DOI 10.1103/PhysRevB.98.224507 · Physical Review B

T1

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Abstract

We report an intense near-infrared pump, c-axis terahertz probe measurement on an electron-doped cuprate superconductor Pr0.88LaCe0.12CuO4 with Tc=22 K. The major effect of the intense pump is to induce a splitting of Josephson plasma edge below Tc, similar to the observation on hole-doped cuprate La1.905Ba0.095CuO4 in a superconducting state. The photoexcitation induced spectral change does not exhibit significant decay up to the longest measured time delay 210 ps. The result suggests that the intense near-infrared pump drives the system from a superconducting state with a uniform Josephson coupling to a metastable superconducting phase with modulated Josephson coupling strengths below Tc.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
Pr0.88LaCe0.12CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	22	Pressure not reported	onset
La1.905Ba0.095CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Nd2CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Pr1.85Ce0.15CuO4-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
YBa2Cu3O6.5 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Nd1.85Ce0.15CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown
Bi2Sr2CaCu2O8 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	—	Pressure not reported	unknown