Effect of a magnetic field on the electron-boson spectral function of cuprate superconductors
S. V. Dordevic, C. C. Homes, G. D. Gu, W. Si, Y. J. Wang
DOI 10.1103/PhysRevB.73.132501 · Physical Review B
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Abstract
We have performed magneto-optical measurements on a series of high−Tc superconductors with magnetic field up to 18T. Similar to previous reports in smaller fields, the results reveal that the optical constants, both in the normal and superconducting state, of several families of high−Tc cuprates are completely insensitive to the application of external magnetic field. These magneto-optical results seem to indicate that either the bosonic mode responsible for pairing is not magnetic in origin, or the charge carriers are not very strongly coupled to it. We discuss the results within the existing theoretical models.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| La1.875Ba0.125CuO4 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 2.4 | Pressure not reported | unknown |
| YBa2Cu3O7-δ Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | 92 | 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. | 23 | Pressure not reported | unknown |
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