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    The Thermal Expansion of the Heavy Fermion Antiferromagnet YbAgGe

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    Author
    Brown, Caitlin
    Issue
    urc_student
    Date
    2011-01-01
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    URI
    https://scholar.oxy.edu/handle/20.500.12711/1110
    Abstract
    We searched for evidence of quantum phase transitions in the heavy fermion antiferromagnet YbAgGe with high magnetic fields applied along the crystallographic c-axis. Using a capacitive dilatometer we measured the thermal expansion of the crystal in fixed magnetic fields ranging from 0T to 9T. With this information and recent magnetostriction data we created a phase diagram that shows two regions of magnetic order in the magnetic field-temperature plane. We discuss these results in light of recent work suggesting quantum phase transitions in this material.
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