http://scitation.aip.org/ APL: Magnetism and Superconductivity http://link.aip.org/link/?APL/99/262506/1&agg=rss M. E. Lucassen, C. H. Wong, R. A. Duine, and Y. Tserkovnyak<br/> We point out a relation between the dissipative spin-transfer-torque parameter beta and the contribution of magnon drag to the thermoelectric power in conducting ferromagnets. Using this result, we estimate beta in iron at low temperatures, where magnon drag is believed to be the dominant contributi ... [Appl. Phys. Lett. 99, 262506 (2011)] published Fri Dec 30, 2011. http://link.aip.org/link/?APL/99/262505/1&agg=rss K. Nakano, D. Chiba, N. Ohshima, S. Kasai, T. Sato et al.<br/> A single vortex-core switching in a ferromagnetic disk is detected in real time by using a three-terminal device with the tunneling magnetoresistance junction. We show that the device works as a vortex core memory cell, where reading and writing can be done in an all-electrical way: binary data corr ... [Appl. Phys. Lett. 99, 262505 (2011)] published Thu Dec 29, 2011. http://link.aip.org/link/?APL/99/262504/1&agg=rss V. D. Nguyen, C. Naylor, L. Vila, A. Marty, P. Laczkowski et al.<br/> The magnetoresistance of permalloy (NiFe) nanowires of various widths (down to 50 nm) has been measured for fields applied along the wires. The enhancement of the shape anisotropy in the narrowest widths leads to the disappearance of the anisotropic magnetoresistance signal, the remaining contributi ... [Appl. Phys. Lett. 99, 262504 (2011)] published Wed Dec 28, 2011. http://link.aip.org/link/?APL/99/262503/1&agg=rss A. Casiraghi, P. Walker, A. V. Akimov, K. W. Edmonds, A. W. Rushforth et al.<br/> We use short acoustic pulses to induce a fast irreversible switching of the magnetization orientation in a layer of (Ga,Mn)(As,P). The pulses are generated by femtosecond optical excitation of a metal transducer film and travel ballistically through the sample. We show that the switching is triggere ... [Appl. Phys. Lett. 99, 262503 (2011)] published Wed Dec 28, 2011. http://link.aip.org/link/?APL/99/262502/1&agg=rss Martin P. Weides, Jeffrey S. Kline, Michael R. Vissers, Martin O. Sandberg, David S. Wisbey et al.<br/> We developed transmon qubits based on epitaxial tunnel junctions and interdigitated capacitors. This multileveled qubit, patterned by use of all-optical lithography, is a step towards scalable qubits with a high integration density. The relaxation time T is 0.720.86 [mu]s and the ensemble dephasing ... [Appl. Phys. Lett. 99, 262502 (2011)] published Tue Dec 27, 2011. http://link.aip.org/link/?APL/99/262501/1&agg=rss R. D. Desautels, E. Skoropata, Y.-Y. Chen, H. Ouyang, J. W. Freeland et al.<br/> An interfacial monolayer of CuO in Cu-coated gamma-FeO nanoparticles enables significantly decreased intrinsic surface spin disorder compared to bare gamma-FeO nanoparticles. Element specific x-ray absorption spectroscopy at the L-edges for Cu and Fe indicates that the magnetic moment of the CuO in ... [Appl. Phys. Lett. 99, 262501 (2011)] published Tue Dec 27, 2011. http://link.aip.org/link/?APL/99/252507/1&agg=rss H. D. Gan, H. Sato, M. Yamanouchi, S. Ikeda, K. Miura et al.<br/> We have investigated a tunnel magnetoresistance (TMR) ratio of CoFeB/MgO perpendicular magnetic tunnel junctions (p-MTJs) with a 40 nm diameter as a function of an annealing temperature T. The TMR ratio at room temperature (RT) increases with increasing T and reaches 149% at T = 350 degrees C, and ... [Appl. Phys. Lett. 99, 252507 (2011)] published Fri Dec 23, 2011. http://link.aip.org/link/?APL/99/252505/1&agg=rss B. Wu, D. Zhu, Y. Acremann, T. A. Miller, A. M. Lindenberg et al.<br/> We report on time-resolved coherent x-ray scattering experiments of laser induced magnetization dynamics in Co/Pd multilayers with a high repetition rate optical pump x-ray probe setup. Starting from a multi-domain ground state, the magnetization is uniformly reduced after excitation by an intense 5 ... [Appl. Phys. Lett. 99, 252505 (2011)] published Thu Dec 22, 2011. http://link.aip.org/link/?APL/99/252506/1&agg=rss T. J. Nummy, S. P Bennett, T. Cardinal, and D. Heiman<br/> The magnetic hysteresis of MnGa films exhibit remarkably large coercive fields as high as [mu]H = 2.5 T when fabricated with nanoscale particles of a suitable size and orientation. This coercivity is an order of magnitude larger than in well-ordered epitaxial film counterparts and bulk materials. Th ... [Appl. Phys. Lett. 99, 252506 (2011)] published Thu Dec 22, 2011. http://link.aip.org/link/?APL/99/252503/1&agg=rss P. Ho, G. C. Han, K. H. He, G. M. Chow, and J. S. Chen<br/> TiN was investigated as a potential spacer material in L1-FePt based pseudo spin valves (PSV). PSVs with the structure MgO/L1-FePt (20 nm)/TiN (5 nm)/L1-FePt (x nm) were fabricated, where x was varied from 5 to 20 nm. The highest giant magnetoresistance (GMR) ratio of 0.61% was obtained for the PSV ... [Appl. Phys. Lett. 99, 252503 (2011)] published Wed Dec 21, 2011. http://link.aip.org/link/?APL/99/252504/1&agg=rss J. F. Qian<!--orlang--> (&#x94B1;&#x91D1;&#x51E4;)<!--orlang-->, E. K. Liu<!--orlang--> (&#x5218;&#x6069;&#x514B;)<!--orlang-->, L. Feng<!--orlang--> (&#x51AF;&#x7433;)<!--orlang-->, W. Zhu<!--orlang--> (&#x6731;&#x4F1F;)<!--orlang-->, G. J. Li<!--orlang--> (&#x674E;&#x8D35;&#x6C5F;)<!--orlang--> et al.<br/> Unusual magnetic anisotropy of the ferromagnetic shape-memory alloy NiFeGa has been observed. The anisotropy of the austenite becomes very large, even larger than that of the martensite in ribbon samples. Lowering the temperature from 300 K to 80 K, the saturation field of the austenite is dramatica ... [Appl. Phys. Lett. 99, 252504 (2011)] published Wed Dec 21, 2011. http://link.aip.org/link/?APL/99/252502/1&agg=rss Y. Q. Zhang, H. Meng, X. W. Wang, J. J. Liu, J. Du et al.<br/> Angular dependent magnetoresistance (AMR) phenomena in PrCaMnO film have been investigated. A transition between costheta dependent AMR in an insulating state at low fields and sintheta dependent AMR in a metal state at high fields is observed at intermediate fields, depending on the temperature and ... [Appl. Phys. Lett. 99, 252502 (2011)] published Tue Dec 20, 2011. http://link.aip.org/link/?APL/99/252501/1&agg=rss Keita Ito, Kazunori Harada, Kaoru Toko, Mao Ye, Akio Kimura et al.<br/> 5-nm thick CoN layers capped with 3-nm thick Au layers were grown epitaxially on SrTiO(001) substrates by molecular beam epitaxy using solid Co and a radio-frequency NH plasma. Spin and orbital magnetic moments of the CoN layers were estimated using x-ray magnetic circular dichroism (XMCD) measureme ... [Appl. Phys. Lett. 99, 252501 (2011)] published Mon Dec 19, 2011. http://link.aip.org/link/?APL/99/242507/1&agg=rss S. Yakata, M. Miyata, S. Honda, H. Itoh, H. Wada et al.<br/> We have proposed a method for controlling the vortex chirality in a squared permalloy dot by using the circular Oersted field locally induced by flowing a DC current across a small Py/Cu junctions. The reliability of the chirality control has been evaluated by measuring the nonlocal spin valve signa ... [Appl. Phys. Lett. 99, 242507 (2011)] published Fri Dec 16, 2011. http://link.aip.org/link/?APL/99/242506/1&agg=rss Zhaoshun Gao, Lei Wang, Chao Yao, Yanpeng Qi, Chunlei Wang et al.<br/> We report the realization of grain alignment in Sn-added SrKFeAs superconducting tapes with Fe sheath prepared by ex-situ powder-in-tube method. At 4.2 K, high transport critical current densities J of 2.5 x 10A/cm (I = 180 A) in self-field and 3.5 x 10A/cm (I = 25.5 A) in 10 T have been measure ... [Appl. Phys. Lett. 99, 242506 (2011)] published Wed Dec 14, 2011. http://link.aip.org/link/?APL/99/242505/1&agg=rss P. Balestriere, T. Devolder, Joo-Von Kim, P. Lecoeur, J. Wunderlich et al.<br/> We study the electrical field induced magnetization reversal in a GaMnAs thin film magnet at the nanosecond scale. Quasi-static electrical fields deplete partially the magnetic material, reducing its magneto-crystalline cubic anisotropy and affecting its transport properties. We demonstrate that ele ... [Appl. Phys. Lett. 99, 242505 (2011)] published Wed Dec 14, 2011. http://link.aip.org/link/?APL/99/242504/1&agg=rss Munetoshi Seki, Hitoshi Tabata, Hiromichi Ohta, Katsuhiko Inaba, and Shintaro Kobayashi<br/> Epitaxial thin films of Ge-substituted FeO were grown on alpha-AlO (001) using pulsed laser deposition, and their electrical and magnetic properties were investigated. A target with excess Ge compositions was employed for the film growth to compensate for the volatilization of germanium oxides durin ... [Appl. Phys. Lett. 99, 242504 (2011)] published Wed Dec 14, 2011. http://link.aip.org/link/?APL/99/242503/1&agg=rss Archana Lakhani, S. Dash, A. Banerjee, P. Chaddah, X. Chen et al.<br/> The ferromagnetic shape memory alloy ribbons with composition NiCoMnSn are shown to have field induced kinetically arrested ferromagnetic austenite phase down to the low temperature due to hindered martensite transformation. This gives rise to the coexisting martensite and austenite phases in a wide ... [Appl. Phys. Lett. 99, 242503 (2011)] published Tue Dec 13, 2011. http://link.aip.org/link/?APL/99/242502/1&agg=rss Y. Yamada, T. Fukumura, K. Ueno, and M. Kawasaki<br/> Ferromagnetism at room temperature in (Ti,Co)O was controlled by changing its electron density via chemical doping, where the oxygen vacancy delta served as an electron donor. With increasing the electron density, the ferromagnetic anomalous Hall effect and magnetization emerged from a paramagnetic ... [Appl. Phys. Lett. 99, 242502 (2011)] published Mon Dec 12, 2011. http://link.aip.org/link/?APL/99/242501/1&agg=rss J. Heinen, D. Hinzke, O. Boulle, G. Malinowski, H. J. M. Swagten et al.<br/> We investigate the non-adiabaticity of current-induced domain wall motion by time resolved analysis of thermally activated domain wall motion between two metastable states within a Co/Pt multilayer wire with a strong uniaxial perpendicular anisotropy. By measuring the dwell times for which the domai ... [Appl. Phys. Lett. 99, 242501 (2011)] published Mon Dec 12, 2011. http://link.aip.org/link/?APL/99/232507/1&agg=rss Suman Mandal, Krishnakumar S. R. Menon, S. K. Mahatha, and S. Banerjee<br/> The observation of finite magnetic moment in antiferromagnetic materials is quite unusual and has been immensely investigated in nanoparticle systems. Here, the structural and magnetic properties of NiO particles are explored by x-ray diffraction, extended x-ray absorption fine structure, and magnet ... [Appl. Phys. Lett. 99, 232507 (2011)] published Fri Dec 9, 2011.