2009 Fiscal Year Final Research Report
Studies of quantum phenomena in frustrated magnets with ultra high precision micro-magnetometer
| Project/Area Number |
20740191
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Condensed matter physics II
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| Research Institution | The University of Tokyo |
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Principal Investigator |
MATSUMOTO Yosuke The University of Tokyo, 物性研究所, 助教 (90422443)
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| Project Period (FY) |
2008 – 2009
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| Keywords | 磁性 |
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| Research Abstract |
High precision magnetization measurements have been performed for Yb-based heavy Fermion superconductor β-YbAlB_4 and its related compounds in wide range of temperature(0.3mT〓B〓7T) and magnetic field(0.02K〓T〓300K). These measurements revealed its divergent temperature dependence in magnetization and T/B scaling in the temperature derivatives i.e., dM/dT. This observation clarifies the unconventional quantum criticality and zero-field quantum critical point in β-YbAlB_4.
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