Zobrazeno 1 - 10
of 218
pro vyhledávání: '"Schmalhorst, Jan"'
We present a detailed analysis of harmonic longitudinal and Hall voltage measurements for in-plane magnetized Pt/Co/Ta and Ta/Co/Pt trilayers in reference to Pt/Co and Ta/Co bilayers. Enhancement of spin-orbit torques (SOTs) and unidirectional spin H
Externí odkaz:
http://arxiv.org/abs/2111.08307
Autor:
Emori, Satoru, Klewe, Christoph, Schmalhorst, Jan-Michael, Krieft, Jan, Shafer, Padraic, Lim, Youngmin, Smith, David A., Sapkota, Arjun, Srivastava, Abhishek, Mewes, Claudia, Jiang, Zijian, Khodadadi, Behrouz, Elmkharram, Hesham, Heremans, Jean J., Arenholz, Elke, Reiss, Gunter, Mewes, Tim
Spin currents can exert spin-transfer torques on magnetic systems even in the limit of vanishingly small net magnetization, as is the case for antiferromagnets. Here, we experimentally show that a spin-transfer torque is operative in a material with
Externí odkaz:
http://arxiv.org/abs/2005.03081
Autor:
Matalla-Wagner, Tristan, Schmalhorst, Jan-Michael, Reiss, Günter, Tamura, Nobumichi, Meinert, Markus
Publikováno v:
Phys. Rev. Research 2, 033077 (2020)
Recent research demonstrated the electrical switching of antiferromagnets via intrinsic spin-orbit torque or the spin Hall effect of an adjacent heavy metal layer. The electrical readout is typically realized by measuring the transverse anisotropic m
Externí odkaz:
http://arxiv.org/abs/1910.08576
Autor:
Matalla-Wagner, Tristan, Rath, Matthias-Felix, Graulich, Dominik, Schmalhorst, Jan-Michael, Reiss, Günter, Meinert, Markus
Publikováno v:
Phys. Rev. Applied 12, 064003 (2019)
Antiferromagnetic materials as active components in spintronic devices promise insensitivity against external magnetic fields, the absence of own magnetic stray fields, and ultrafast dynamics at the picosecond time scale. Materials with certain cryst
Externí odkaz:
http://arxiv.org/abs/1903.12387
Autor:
Manos, Orestis, Bougiatioti, Panagiota, Dyck, Denis, Huebner, Torsten, Rott, Karsten, Schmalhorst, Jan-Michael, Reiss, Günter
We investigate the dependence of magnetic properties on the post-annealing temperature/time, the thickness of soft ferromagnetic electrode and Ta dusting layer in the pinned electrode as well as their correlation with the tunnel magnetoresistance rat
Externí odkaz:
http://arxiv.org/abs/1802.08002
We report an exchange bias of more than $2700\,$Oe at room temperature in MnN/CoFe bilayers after high-temperature annealing. We studied the dependence of exchange bias on the annealing temperature for different MnN thicknesses in detail and found th
Externí odkaz:
http://arxiv.org/abs/1710.08809
Autor:
Manos, Orestis, Böhnke, Alexander, Bougiatioti, Panagiota, Klett, Robin, Rott, Karsten, Niesen, Alessia, Schmalhorst, Jan-Michael, Reiss, Günter
Recently, magnetic tunnel junctions with perpendicular magnetized electrodes combined with exchange bias films have attracted large interest. In this paper we examine the tunnel magnetoresistance of Ta/Pd/IrMn/Co-Fe/Ta/Co-Fe-B/MgO/Co-Fe-B/capping/Pd
Externí odkaz:
http://arxiv.org/abs/1709.02607
Autor:
Bougiatioti, Panagiota, Manos, Orestis, Klewe, Christoph, Meier, Daniel, Teichert, Niclas, Schmalhorst, Jan-Michael, Kuschel, Timo, Reiss, Günter
Publikováno v:
J. Appl. Phys. 122, 225101 (2017)
We fabricated NiFe$_\textrm{2}$O$_\textrm{x}$ thin films on MgAl$_2$O$_4$(001) substrates by reactive dc magnetron co-sputtering varying the oxygen partial pressure during deposition. The fabrication of a variable material with oxygen deficiency lead
Externí odkaz:
http://arxiv.org/abs/1708.01937
Autor:
Klett, Robin-Pierre, Schönle, Joachim, Becker, Andreas, Dyck, Denis, Rott, Karsten, Haskenhoff, Jan, Krieft, Jan, Hübner, Torsten, Reimer, Oliver, Shekhar, Chandra, Schmalhorst, Jan-Michael, Hütten, Andreas, Felser, Claudia, Wernsdorfer, Wolfgang, Reiss, Günter
Topological crystalline insulators represent a new state of matter, in which the electronic transport is governed by mirror-symmetry protected Dirac surface states. Due to the helical spin-polarization of these surface states, the proximity of topolo
Externí odkaz:
http://arxiv.org/abs/1706.10164
Autor:
Bougiatioti, Panagiota, Klewe, Christoph, Meier, Daniel, Manos, Orestis, Kuschel, Olga, Wollschläger, Joachim, Bouchenoire, Laurence, Brown, Simon D., Schmalhorst, Jan-Michael, Reiss, Günter, Kuschel, Timo
Publikováno v:
Phys. Rev. Lett. 119, 227205 (2017)
We identify and investigate thermal spin transport phenomena in sputter-deposited Pt/NiFe$_2$O$_{\textrm{4-x}}$ ($4\geq x \geq 0$) bilayers. We separate the voltage generated by the spin Seebeck effect from the anomalous Nernst effect contributions a
Externí odkaz:
http://arxiv.org/abs/1702.05384