Nonlinear conductivity in CaRuO3 thin films measured by short current pulses
| Autor: | Philipp Gegenwart, Sven Esser, Christian Stingl, Sebastian Esser |
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| Rok vydání: | 2014 |
| Předmět: |
Condensed Matter - Materials Science
Materials science Strongly Correlated Electrons (cond-mat.str-el) Condensed matter physics Solid-state physics Terahertz radiation Materials Science (cond-mat.mtrl-sci) FOS: Physical sciences Pulse duration Condensed Matter Physics Electronic Optical and Magnetic Materials Condensed Matter - Strongly Correlated Electrons Residual resistivity Nonlinear system ddc:530 Thin film Joule heating Quantum |
| Zdroj: | The European Physical Journal B. 87 |
| ISSN: | 1434-6036 1434-6028 |
| Popis: | Metals near quantum critical points have been predicted to display universal out-of equilibrium behavior in the steady current-carrying state. We have studied the non-linear conductivity of high-quality CaRuO$_3$ thin films with residual resistivity ratio up to 57 using micro-second short, high-field current pulses at low temperatures. Even for the shortest pulses of $5\mu$s, Joule heating persists, making it impossible to observe a possible universal non-linearity. Much shorter pulses are needed for the investigation of universal non-linear conductivity. Comment: 9 pages, 7 figures |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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