TY - JOUR
T1 - Temperature dependent tunneling spectroscopy in the heavy fermion CeRu 2Si 2 and in the antiferromagnet CeRh 2Si 2
AU - Maldonado, A.
AU - Suderow, H.
AU - Vieira, S.
AU - Aoki, D.
AU - Flouquet, J.
PY - 2012/11/28
Y1 - 2012/11/28
N2 - CeRu 2Si 2 and CeRh 2Si 2 are two similar heavy fermion stoichiometric compounds located on the two sides of a magnetic quantum critical phase transition. CeRh 2Si 2 is an antiferromagnet below T N=36K with moderate electronic masses whereas CeRu 2Si 2 is a paramagnetic metal with particularly heavy electrons. Here we present tunneling spectroscopy measurements as a function of temperature (from 0.15 to 45K). The tunneling conductance at 0.15K reveals V-shaped dips around the Fermi level in both compounds, which disappear in CeRu 2Si 2 above the coherence temperature, and in CeRh 2Si 2 above the Néel temperature. In the latter case, two different kinds of V-shaped tunneling conductance dips are found.
AB - CeRu 2Si 2 and CeRh 2Si 2 are two similar heavy fermion stoichiometric compounds located on the two sides of a magnetic quantum critical phase transition. CeRh 2Si 2 is an antiferromagnet below T N=36K with moderate electronic masses whereas CeRu 2Si 2 is a paramagnetic metal with particularly heavy electrons. Here we present tunneling spectroscopy measurements as a function of temperature (from 0.15 to 45K). The tunneling conductance at 0.15K reveals V-shaped dips around the Fermi level in both compounds, which disappear in CeRu 2Si 2 above the coherence temperature, and in CeRh 2Si 2 above the Néel temperature. In the latter case, two different kinds of V-shaped tunneling conductance dips are found.
UR - http://www.scopus.com/inward/record.url?scp=84868332272&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84868332272&partnerID=8YFLogxK
U2 - 10.1088/0953-8984/24/47/475602
DO - 10.1088/0953-8984/24/47/475602
M3 - Article
C2 - 23110924
AN - SCOPUS:84868332272
VL - 24
JO - Journal of Physics Condensed Matter
JF - Journal of Physics Condensed Matter
SN - 0953-8984
IS - 47
M1 - 475602
ER -