Low-temperature transport measurements of superconductors and semiconductors in magnetic fields to 800T
| Autor: | J.D. Goettee, W.D. Zerwekh, A.V. Skougarevsky, V.V. Platonov, Emma E. Mitchell, N. Miura, J.O' Brien, G. R. Facer, H. Yokoi, Bruce E. Kane, Dwight G. Rickel, R. P. Starrett, R. G. Clark, K.-H. Müller, D. J. Clark, J.C. King, L.J. Campbell, A.I. Bykov, C.M. Fowler, B. D. Bartram, J. Hermann, Olga M. Tatsenko, M. von Ortenberg, Arthur C. Gossard, H. Nakagawa, N. E. Lumpkin, Andrew S. Dzurak, K. D. Maranowski, Charles H. Mielke, Fritz Herlach |
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| Rok vydání: | 1998 |
| Předmět: |
Superconductivity
Flux pumping Materials science Condensed matter physics Field (physics) business.industry Condensed Matter Physics Electronic Optical and Magnetic Materials Magnetic field Paramagnetism Semiconductor Condensed Matter::Superconductivity Electrical and Electronic Engineering Thin film business Critical field |
| Zdroj: | Physica B: Condensed Matter. :40-49 |
| ISSN: | 0921-4526 |
| DOI: | 10.1016/s0921-4526(98)00046-5 |
| Popis: | Recent innovations in sample lithography and measurement techniques have made possible electrical transport measurements on both high-Tc superconductor and semiconductor samples in the harsh environment of implosively generated magnetic fields B up to 800 T, with reliable data obtained up to 300 T. Thin films of the cuprate superconductor YBa2Cu3O7−δ have been studied with B directed parallel to the CuO planes (J‖B⊥c-axis). At an ambient temperature of 1.6 K and a probe frequency of 0.9 GHz we find an onset of dissipation at Bon=(150±20) T, the highest field yet reported. In addition, the measured upper critical field Bc2=(240±30) T is significantly above the paramagnetic limit for this material. Measurements on AlxGa1−xAs/GaAs parabolic quantum well structures, designed to probe the existence of a magnetically induced triplet superconducting phase, and on HgSe : Fe samples are also discussed. |
| Databáze: | OpenAIRE |
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