Field Angle Tuned Metamagnetism and Lifschitz Transitions in UPt₃.

ABSTRACT: Strongly correlated electronic systems can harbor a rich variety of quantum spin states. Understanding and controlling such spin states in quantum materials is of great current interest. Focusing on the simple binary system UPt₃ with ultrasound (US) as a probe we identify clear signatures in field sweeps demarkating new high field spin phases. Magnetostriction (MS) measurements performed up to 65 T also show signatures at the same fields confirming these phase transitions. At the very lowest temperatures (<200 mK) we also observe magneto-acoustic quantum oscillations which for θ = 90° (B||c-axis) and vicinity abruptly become very strong in the 24.8-30 T range. High resolution magnetization measurements for this same angle reveal a continuous variation of the magnetization implyi

SUBMITTER: Shivaram BS 

PROVIDER: S-EPMC6547847 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature