Rui Zhu 1* and Jamal Berakdar 2 $^{1}$Department of Physics, South China University of Technology, Guangzhou 510641, People’s Republic of China 2 Institut f¨ ur Physik, Martin-Luther-Universit¨ at Halle-Wittenberg, D-06120 Halle, Germany Spin-dependent pump current and noise in an adiabatic quantum pump based on domain walls in a magnetic nanowire Abstract arXiv:1001.1465v1 [cond-mat.mes-hall] 10 Jan 2010 We study the pump current and noise properties in an adiabatically modulated magnetic nanowire with double domain walls (DW). The modulation is brought about by applying a slowly oscillating magnetic and electric fields with a controllable phase difference. The pumping mecha- nism resembles the case of the quantum dot pump with two-oscillating gates. The pump current, shot noise, and heat flow show peaks when the Fermi energy matches with the spin-split resonant levels localized between the DWs. The peak height of the pump current is an indicator for the lifetime of the spin-split quasistationary states between the DWs. For sharp DWs, the energy ab- sorption from the oscillating fields results in side-band formations observable in the pump current. The pump noise carries information on the correlation properties between the nonequilibrium elec- trons and the quasi-holes created by the oscillating scatterer. The ratio between the pump shot noise and the heat flow serves as an indicator for quasi-particle correlation. PACS numbers: 73.23.-b, 75.60.Ch, 05.60.Gg 1 * Corresponding author. Electronic address: rzhu@scut.edu.cn