Abstract
In the d-electron system YFe<sub>2</sub>Ge<sub>2</sub>, an unusually high and temperature dependent Sommerfeld ratio of the specific heat capacity C /T ∼ 100 mJ/(mol K<sup>2</sup>) and an anomalous power law temperature dependence of the electrical resistivity ρ≃ρ0+AT3/2 signal Fermi liquid breakdown, probably connected to a close-by quantum critical point. Full resistive transitions and DC diamagnetic screening fractions of up to 80% suggest that pure samples of YFe<sub>2</sub>Ge<sub>2</sub> superconduct below 1.8 K. In the d-electron system YFe<sub>2</sub>Ge<sub>2</sub>, an unusually high and temperature dependent Sommerfeld ratio of the specific heat capacity and an anomalous power law temperature dependence of the electrical resistivity signal a Fermi liquid breakdown. Resistive and magnetic signatures indicate that high quality samples of YFe<sub>2</sub>Ge<sub>2</sub> superconduct below 1.8 K. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
| Original language | English |
|---|---|
| Pages (from-to) | 928-930 |
| Journal | Physica Status Solidi - Rapid Research Letters |
| Volume | 8 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 1 Nov 2014 |
| Externally published | Yes |
Bibliographical note
Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to <a href="mailto:[email protected]">[email protected]</a>.Funding
This work was supported by the EPSRC of the UK and by Trinity College, Cambridge.
Research Keywords
- Non-Fermi liquids
- Superconductivity
- Transition metals
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