Pressure studies of quantum critical effects in CeCu2Si2 and CeNi2Ge2

Hellmann, Peter; Donnevert, Lars; Thomas, Sven; Geibel, Christoph; Sparn, Günter; Steglich, Frank

doi:10.1007/BF02570282

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Pressure studies of quantum critical effects in CeCu₂Si₂ and CeNi₂Ge₂

MPS-Authors

There are no MPG-Authors in the publication available

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Hellmann, P., Donnevert, L., Thomas, S., Geibel, C., Sparn, G., & Steglich, F. (1996). Pressure studies of quantum critical effects in CeCu₂Si₂ and CeNi₂Ge₂. Czechoslovak journal of physics, 46, 2591-2592. doi:10.1007/BF02570282.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0019-E635-2

Abstract

We have investigated the effect of pressure and magnetic field on the specific heat of CeCu2Si2 and CeNi2Ge2, two undoped compounds close to an antiferromagnetic (afm) quantum critical point. In a CeCu2Si2 sample showing an afm phase at p = 0, application of a pressure of p = 0.7 GPa results in a replacement of this phase by superconductivity and to non-Fermi-liquid (NFL) behaviour in C/T. In CeNi2Ge2 the NFL behaviour present at p = 0 is suppressed by either a magnetic field B = 8 T or a pressure p = 1.3 GPa. For both compounds, the NFL effects are consistent (as T --> 0) with C/T = gamma(0) - alpha T-1/2 as expected when T-N --> 0.