CeOs4Sb12异常低温态的磁场与La掺杂研究
强关联电子
2013-05-29 v2
摘要
Specific heat for single crystalline samples of Ce1-xLaxOs4Sb12 at zero-field and magnetic fields to 14 T is reported. Our results confirm enhanced value of the electronic specific heat coefficient in the paramagnetic state. They provide arguments for the intrinsic origin of the 1.1 K anomaly. This transition leads to opening of the gap at the Fermi surface. This low temperature state of CeOs4Sb12 is extremely sensitive to chemical impurities. 2% of La substituted for Ce suppresses the transition and reduces the electronic specific heat coefficient. The magnetic field response of the specific heat is also anomalous.
引用
@article{arxiv.cond-mat/0407384,
title = {Anomalous low temperature state of CeOs4Sb12: Magnetic field and La-impurity study},
author = {C. R. Rotundu and B. Andraka},
journal= {arXiv preprint arXiv:cond-mat/0407384},
year = {2013}
}
备注
4 pages, 3 figures