Exchange Splittings of Lanthanide (0001)-Surface States and Their Dependences on Short-Range Magnetic Order

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概要

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• The exchange splittings of (0001)-surface states of Nd, Gd, and Tm have been measured as a function of temperature by scanning tunneling spectroscopy (STS). For all three elements, we find a finite exchange splitting in the paramagnetic phase, which is attributed to short-range magnetic order above the magnetic-ordering temperature, $T^{*}$. In case of Nd, an almost linear decrease of the exchange splitting is observed within 40 K above $T^{*}$. The exchange splitting of the surface state of ultrathin Gd(0001) films was investigated for various film thicknesses. Other than for long-range magnetic order, the exchange splitting is only slightly affected by finite-size effects.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2006-03-30

著者

• Rehbein Alexander

  Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin-Dahlem, Germany

• Wegner Daniel

  Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin-Dahlem, Germany

• Bauer Andreas

  Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin-Dahlem, Germany

• Kaindl Günter

  Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin-Dahlem, Germany

• Bauer Andreas

  Institut für Experimentalphysik, Freie Universität Berlin, Arnimallee 14, 14195 Berlin-Dahlem, Germany

関連論文

• Exchange Splittings of Lanthanide (0001)-Surface States and Their Dependences on Short-Range Magnetic Order
• Influence of Morphology on Quantum-Well States of Yb on W(110)

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