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Suppression of charge density wave transitions in La(Ag<sub>1-x</sub>Au<sub>x</sub>)Sb<sub>2</sub> (0≤x≤1) by pressure.

ORAL

Abstract

LaAgSb2 exhibits two CDW transitions at ambient pressure: at T1 ~ 207 K a lattice modulation along the a-axis develops and upon further cooling, at T2 ~ 186 K, an additional CDW ordering along the c-direction appears. [1] Here, we report resistivity measurements on La(Ag1-xAux)Sb2 (0≤x≤1) samples at ambient and high pressure that reveal suppression of both CDW transitions by pressure and Au substitution. By introducing simple pressure scale shifts for different x-values, the T(P) data fall onto universal T1(P*) and T2(P*) curves. Results will be compared with and contrasted to the literature data on (La1-xRx)AgSb2 (R = Ce, Nd). [2]
[1] C. Song et al., Phys. Rev. B 68, 035113 (2003).
[2] M. Torikachvili et al., Phys. Rev. B 76, 235110 (2007).

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Presenters

  • Sergey L. Bud'ko

    Iowa State University, Ames Laboratory and Iowa State University, Ames Lab, Ames laboratory, Ames, IA, Department of Physics & Astronomy, Iowa State University/Ames Laboratory, Ames Laboratory, Department of Physics and Astronomy, Iowa State University/Ames Laboratory, Iowa State University and Ames Laboratory, Iowa State University, Ames Laboratory, Division of Materials Sciences & Engineering, Ames Lab and Iowa State University, Iowa State University/Ames Laboratory

Authors

  • Sergey L. Bud'ko

    Iowa State University, Ames Laboratory and Iowa State University, Ames Lab, Ames laboratory, Ames, IA, Department of Physics & Astronomy, Iowa State University/Ames Laboratory, Ames Laboratory, Department of Physics and Astronomy, Iowa State University/Ames Laboratory, Iowa State University and Ames Laboratory, Iowa State University, Ames Laboratory, Division of Materials Sciences & Engineering, Ames Lab and Iowa State University, Iowa State University/Ames Laboratory

  • Li Xiang

    Ames Laboratory and Iowa State University, Iowa State University, Ames Laboratory, Iowa State University

  • Dominic H Ryan

    Department of Physics and Centre for the Physics of Materials, McGill University, McGill University

  • Paul C Canfield

    Iowa State University, Ames Laboratory and Iowa State University, Ames Lab, Ames Laboratory and Department of Physics and Astronomy, Iowa State University, Ames, Iowa 50011, USA, Ames laboratory, Ames, IA, Ames Laboratory, Iowa State University, Department of Physics & Astronomy, Iowa State University/Ames Laboratory, Department of Physics and Astronomy, Iowa State University/Ames Laboratory, Iowa State University and Ames Laboratory, Iowa State University, Ames Laboratory, Department of Physics and Astronomy, Iowa State University, Division of Materials Sciences & Engineering, Ames Lab and Iowa State University, Department of Physics and Astronomy, Ames Laboratory/Iowa State Univeristy, Iowa State University/Ames Laboratory