APS Logo

Electronic tuning in URu<sub>2</sub>Si<sub>2</sub> through Ru to Pt chemical substitution

ORAL

Abstract

Tuning studies that control the unit cell volume and electronic composition have been particularly useful in understanding what factors lead to hidden order (HO) and superconductivity in the strongly correlated electron system URu2Si2 [1]. Several unifying trends have emerged with chemical substitutions that qualitatively adds electrons (e.g., Ru → Rh and Si → P), such as, the rapid destruction of HO, even as the underlying Kondo lattice is preserved, and the emergence of complex magnetism with large substitutions. An understanding of what factors differentiate the regions in this generic electron doping phase diagram will likely clarify the mechanisms which are necessary for producing HO. In order to examine whether these trends persist for an even more dissimilar substituent, we developed the series U(Ru1-xPtx)2Si2. We will present thermodynamic and electrical transport measurements for this series and discuss the notable similarities to other phase diagrams.
[1] Mydosh et al., JPCM 32, 143002 (2020)

–

Presenters

  • Greta Chappell

    Florida State University, National High Magnetic Field Laboratory, Florida State University

Authors

  • Greta Chappell

    Florida State University, National High Magnetic Field Laboratory, Florida State University

  • William Nelson

    National High Magnetic Field Laboratory, Florida State University, Physics, NHMFL, Florida State University

  • David E Graf

    National High Magnetic Field Laboratory, Florida State University, National High Magnetic Field Lab, Florida State University, National High Magnetic Field Laboratory, Tallahassee and Florida State University, National High Magnetic Field Laboratory, Florida State University, National High Magnetic Field Laboratory (FSU), Department of Physics, Florida State University, National High Magnetic Field Laboratory and Department of Physics, Florida State University, National High Magnetic Field Lab, National High Magnetic Field Laboratory, Tallahassee, FL, CMS, National High Magnetic Laboratory

  • Ryan Baumbach

    National High Magnetic Field Laboratory, Florida State University, National High Magnetic Field Laboratory, Florida State University, Physics, NHMFL, Florida State University