| Autor: |
Erwin, Schuberth, Marc, Tippmann, Lucia, Steinke, Stefan, Lausberg, Alexander, Steppke, Manuel, Brando, Cornelius, Krellner, Christoph, Geibel, Rong, Yu, Qimiao, Si, Frank, Steglich |
| Rok vydání: |
2015 |
| Zdroj: |
Science (New York, N.Y.). 351(6272) |
| ISSN: |
1095-9203 |
| Popis: |
The smooth disappearance of antiferromagnetic order in strongly correlated metals commonly furnishes the development of unconventional superconductivity. The canonical heavy-electron compound YbRh2Si2 seems to represent an apparent exception from this quantum critical paradigm in that it is not a superconductor at temperature T ≥ 10 millikelvin (mK). Here we report magnetic and calorimetric measurements on YbRh2Si2, down to temperatures as low as T ≈ 1 mK. The data reveal the development of nuclear antiferromagnetic order slightly above 2 mK and of heavy-electron superconductivity almost concomitantly with this order. Our results demonstrate that superconductivity in the vicinity of quantum criticality is a general phenomenon. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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