Low-temperature specific heat for ferromagnetic and antiferromagnetic orders in CaRu1-xMnxO3

Autor:	Yokoyama, M., Nakano, S., Someya, S., Nakada, T., Wada, N., Kawanaka, H., Bando, H., Tenya, K., Kondo, A., Kindo, K.
Rok vydání:	2012
Předmět:	Condensed Matter - Strongly Correlated Electrons
Zdroj:	J. Phys.: Conf. Ser. 391 (2012) 012114
Druh dokumentu:	Working Paper
DOI:	10.1088/1742-6596/391/1/012114
Popis:	Low-temperature specific heat of CaRu1-xMnxO3 was measured to clarify the role of d electrons in ferromagnetic and antiferromagnetic orders observed above x=0.2. Specific heat divided by temperature C_p/T is found to roughly follow a T^2 function, and relatively large magnitudes of electronic specific heat coefficient gamma were obtained in wide x range. In particular, gamma is unchanged from the value at x=0 (84 mJ/K^2 mol) in the paramagnetic state for x<=0.1, but linearly reduced with increasing x above x= 0.2. These features of gamma strongly suggest that itinerant d electrons are tightly coupled with the evolution of magnetic orders in small and intermediate Mn concentrations. Comment: 4 pages, 2 figures, to be published in J. Phys.: Conf. Ser. (SCES 2011, Cambridge, UK)
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1206.1658 Zobrazit plný text záznamu View this record from Arxiv