Magnetoresistance and Torque Magnetization of YbB<sub>12</sub> in Pulsed Magnetic Fields
ORAL
Abstract
The observation of magnetic quantum oscillations in nominally insulating SmB6 generated significant excitement due to its implications for the presence of topological surface states or a bulk neutral Fermi surface. More recently, similar oscillations have been reported in another Kondo insulator YbB12. There are currently numerous open questions regarding the nature of these oscillations including the relative contributions of the bulk, surfaces, and defects, as well as the presence of multiple oscillation frequencies. We present a pulsed magnetic field study of magnetoresistance and torque magnetization in YbB12. The angular and temperature dependences of these measurements provide important insights into the electronic structure of YbB12 and suggest a connection between the insulating phase oscillations and the field-induced insulator-metal transition.
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Presenters
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Christopher A Mizzi
Los Alamos National Laboratory
Authors
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Christopher A Mizzi
Los Alamos National Laboratory
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Neil Harrison
Los Alamos Natl Lab, National High Magnetic Field Laboratory, Los Alamos, New Mexico 87545, U.S.A.
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William A Phelan
Los Alamos National Laboratory
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Lucas A Pressley
Johns Hopkins University
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Tyrel M McQueen
Johns Hopkins University, Department of Chemistry, The Johns Hopkins University
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Priscila Rosa
Quantum Group, Los Alamos National Laboratory, Los Alamos, NM 87545, USA, Los Alamos National Laboratory
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Mun K Chan
Los Alamos National Laboratory