Dresden 2014 – wissenschaftliches Programm

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TT: Fachverband Tiefe Temperaturen

TT 79: Correlated Electrons - Poster Session

TT 79.1: Poster

Mittwoch, 2. April 2014, 15:00–19:00, P2

Electron Spin Resonance in Yb(Rh_0.73Co_0.27)₂Si₂ below 1 K — Ilshat Fazlishanov^1,4, •Zakir Seidov^1,5, Jörg Sichelschmidt², Hans-Albrecht Krug von Nidda¹, Cornelius Krellner³, Christoph Geibel², Frank Steglich², and Manuel Brando² — ¹Experimental Physics V, EKM, University of Augsburg, 86159 Augsburg — ²Max Planck Institute for Chemical Physics of Solids, 01187 Dresden — ³Institute of Physics, Goethe University Frankfurt, 60438 Frankfurt am Main — ⁴E.K.Zavoisky Physical Technical Institute, Russian Academy of Sciences, 420029 Kazan, Russia — ⁵Institute of Physics, Azerbaijan National Academy of Sciences, AZ-1143 Baku, Azerbaijan

We report Electron Spin Resonance (ESR) experiments on the heavy-fermion metal Yb(Rh_0.73Co_0.27)₂Si₂ in the temperature range 0.75K≤ T≤ 4K. The ESR measurements were performed at X-band frequencies using a home-built 3He cryostat. We found that below 1.3K the ESR spectra of Yb(Rh_0.73Co_0.27)₂Si₂ split into two lines. Such a behavior can be explained by the strong anisotropy of the ferromagnetic ground state in agreement with magnetization measurements [1].
S. Lausberg, A. Hannaske, A. Steppke, L. Steinke, T. Gruner, L. Pedrero, C. Krellner, C. Klingner, M. Brando, C. Geibel, F. Steglich, Phys. Rev. Lett. 110, 256402 (2013)