Mao Z Q, Zhou M, Hooper J, Golub V, O'Connor C J
Department of Physics, Tulane University, New Orleans, Louisiana 70118, USA.
Phys Rev Lett. 2006 Feb 24;96(7):077205. doi: 10.1103/PhysRevLett.96.077205. Epub 2006 Feb 23.
We have investigated the electronic transport properties of the triple-layered ruthenate Sr4Ru3O10. We observed surprising anomalous features near its itinerant metamagnetic transition, including ultrasharp magnetoresistivity steps, a nonmetallic temperature dependence in resistivity for upward field sweeps, and a resistivity drop in temperature dependence for downward field sweeps. These features suggest that the metamagnetic transition of Sr4Ru3O10 occurs via an electronic phase separation process with magnetic domain formation.
我们研究了三层钌酸盐Sr4Ru3O10的电子输运性质。我们在其巡游变磁转变附近观察到了令人惊讶的反常特征，包括超尖锐的磁电阻台阶、向上场扫描时电阻率的非金属温度依赖性以及向下场扫描时电阻率随温度的下降。这些特征表明，Sr4Ru3O10的变磁转变是通过具有磁畴形成的电子相分离过程发生的。
