2013 Fiscal Year Final Research Report

Research of novel quantum criticality and frustration effect on lanthanide compounds

Research Project

Project/Area Number	24840003
Research Category	Grant-in-Aid for Research Activity Start-up
Allocation Type	Single-year Grants
Research Field	Condensed matter physics II
Research Institution	Tohoku University
Principal Investigator	NORIYUKI Kabeya 東北大学, 理学(系)研究科(研究院), 助教 (70633642)
Project Period (FY)	2012-08-31 – 2014-03-31
Keywords	量子臨界現象 / フラストレーション / 強相関電子系 / 希土類化合物 / 圧力下物性測定 / 元素置換系
Research Abstract	This Research is about quantum critical point (QCP), which is the critical point caused by quantum fluctuation. We have used pressure and substitution of element as the method of approach to the QCPs. To obtain the information of quantum critical frustration, we have developed a handmade heat capacity measurement system. On the approach to the QCPs by pressure, an anomaly of electrical resistivity associated antiferromagnetic transition is found. On the approach to the QCPs by substitution of the element, we have succeed to make the single crystalline samples located at the vicinity of the QCP. the sample shows the logarithmic increase of the specific heat at low temperature region.

(4 results)