DPG Phi
Verhandlungen
Verhandlungen
DPG

Regensburg 2010 – scientific programme

Parts | Days | Selection | Search | Downloads | Help

TT: Fachverband Tiefe Temperaturen

TT 27: CE: Poster Session

TT 27.22: Poster

Wednesday, March 24, 2010, 14:00–18:00, Poster D1

Spin density wave quantum phase transition in the LuFe2Ge2/YFe2Ge2 system — •Zhuo Feng and Malte Grosche — Quantum Matter Group, Cavendish Laboratory, J J Thomson Avenue, Cambridge, CB3 0HE, U.K.

In intermetallic transition metal compounds, spin density wave order and studies of the associated quantum critical point are still comparatively rare. LuFe2Ge2 has been reported to exhibit spin density wave order below 9K, and its isoelectronic sister compound YFe2Ge2 is paramagnetic. Together, they form an attractive system for probing spin density wave quantum criticality. We have grown high quality crystals of YFe2Ge2 and LuFe2Ge2 using flux as well as radio frequency induction methods. YFe2Ge2 exhibits an unusually high Sommerfeld coefficient of the specific heat capacity C/T at 1 K in excess of 100 mJ/(mol K2) and still rising significantly with decreasing temperature, as well as an anomalous temperature dependence of the electrical resistivity, ρ ∼ T3/2. High-pressure measurements are under way in LuFe2Ge2, to investigate its magnetic phase diagram near the magnetic quantum phase transition, and to examine the associated quantum critical behaviour.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2010 > Regensburg