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Electron microscope image of a magnetic nano wire with electric contacts

Publications

Working Group 2.52

Content:

1. Nanomagnetism and magnetisation dynamics
2. Development of time-resolved optoelectronic measurement techniques
3. Characterisation of electronic and optoelectronic high-frequency devices
4. Time-resolved light-matter interaction

 

1. Nanomagnetism and magnetisation dynamics

H. Corte-León, A. Beguivin, P. Krzysteczko, H. W. Schumacher, A. Manzin, R. P. Cowburn,V. Antonov, and O. Kazakova, “Influence of geometry on domain wall dynamics in permalloy nanodevices,” IEEE Trans. Magn. 51, 4001304 (2015).

S. Sievers, N. Liebing, S. Serrano-Guisan, R. Ferreira, A. Caprile, A. Manzin, M. Pasquale, W. Skowroński, T. Stobiecki, K. Rott, G. Reiss, J. Langer, B. Ocker, H.W. Schumacher, “Towards wafer scale inductive characterization of spin transfer torque critical current density of magnetic tunnel junction stacks,”  IEEE Trans. Magn. 51, 1400804 (2015).

H. Corte-León, P. Krzysteczko, H. W. Schumacher, A. Manzin, V. Antonov, and O. Kazakova, “Tailoring of domain wall devices for sensing applications,” IEEE Trans. Magn. 50, 7101004 (2014).

Héctor Corte-León, Vahid Nabaei, Alessandra Manzin, Jonathan Fletcher, Patryk Krzysteczko, Hans W. Schumacher, and Olga Kazakova, “Anisotropic Magnetoresistance State Space of Permalloy Nanowires with Domain Wall Pinning Geometry,” Scientific Reports 4, 6045 (2014).

X.K. Hu, P. Krzysteczko, N. Liebing, S. Serrano-Guisan, K. Rott, G. Reiss, J. Kimling, T. Böhnert, K. Nielsch, and H.W. Schumacher, “Magneto-thermoelectric figure of merit of Co/Cu multilayers”  Appl. Phys. Lett. 104, 092411 (2014).

A. Ben-Hamida, S. Sievers, K. Pierz, and H.W. Schumacher, “Broadband ferromagnetic resonance characterization of GaMnAs thin films,” J. Appl Phys. 114 123704 (2013). 

N. Liebing, S. Serrano-Guisan, P. Krzysteczko, K. Rott, G. Reiss, J. Langer, B. Ocker, and H. W. Schumacher, “Tunnelling magneto thermo currents in CoFeB/MgO/CoFeB magnetic tunnel junction nanopillars,” Appl. Phys. Lett. 102, 242413 (2013).

X.K. Hu, S. Sievers, A. Müller, V. Janke, and H.W. Schumacher, “The influence of individual lattice defects on the domain structure in magnetic antidot lattices,” J. Appl. Phys. 113, 103907 (2013).

S. Sievers, N. Liebing, P. Nass, S. Serrano-Guisan, M. Pasquale, and H. W. Schumacher, “Towards wafer scale inductive determination of magnetostatic and dynamic parameters of magnetic thin films and multilayers,” IEEE Trans. Magn. 49, 58 (2013).

Sibylle Sievers, Kai-Felix Braun, Dietmar Eberbeck, Stefan Gustafsson, Eva Olsson, Hans Werner Schumacher, Uwe Siegner, “Quantitative measurement of the magnetic moment of individual magnetic nanoparticles by magnetic force microscopy,” Small 8, 2675 (2012).

N. Liebing, S. Serrano-Guisan, K. Rott, G. Reiss, J. Langer, B. Ocker, and H. W. Schumacher, “Determination of spin-dependent Seebeck coefficients of CoFeB/MgO/CoFeB magnetic tunnel junction nanopillars,”  J. Appl. Phys. 111, 07C520 (2012).

N. Liebing, S. Serrano-Guisan, K. Rott, G. Reiss, J. Langer, B. Ocker, and H. W. Schumacher, “Tunneling magneto thermo power in magnetic tunnel junction nanopillars,” Phys. Rev. Lett. 107, 177201 (2011).

S. Serrano-Guisan, K. Rott, G. Reiss, J. Langer, B. Ocker, H. W. Schumacher, “Biased quasi ballistic spin torque magnetization reversal,” Phys. Rev. Lett. 101, 087201 (2008).

S. Serrano-Guisan, K. Rott, G. Reiss, H.W. Schumacher, “Inductive and magneto resistive measurements of Gilbert damping in Ni81Fe19 thin films and microstructures,” J. Phys D.: Appl. Phys. 41, 164015 (2008).

H. W. Schumacher, S. Serrano-Guisan, K. Rott, G. Reiss, “Ultrafast magnetization dynamics probed by anisotropic magneto resistance,” Appl. Phys. Lett. 90, 042504 (2007).

H. W. Schumacher, “Ultraschnelle Magnetspeicher,” Physik in unserer Zeit 36, 261 (2005).

2. Development of time-resolved optoelectronic measurement techniques

M. Bieler, H. Füser, and K. Pierz, "Time-Domain Optoelectronic Vector Network Analysis on Coplanar Waveguides," IEEE Transactions on Microwave Theory and Techniques 63, 3775–3784 (2015).

H. Füser, M. Bieler, S. Ahmed, and F. Verbeyst, "Asynchronous electro-optic sampling of all-electronically generated ultrashort voltage pulses," Meas. Sci. Technol. 26, 025203 (2015).

Y. Deng, H. Füser, and M. Bieler, "Absolute Intensity Measurements of CW GHz and THz Radiation Using Electro-Optic Sampling," IEEE Transactions on Instrumentation and Measurement 64, 1734–1740 (2015).

H. Füser and M. Bieler, "Terahertz Frequency Combs," J Infrared Milli Terahz Waves 35, 585–609 (2014).

H. Füser, R. Judaschke, and M. Bieler, "High-precision frequency measurements in the THz spectral region using an unstabilized femtosecond laser," Appl. Phys. Lett. 99, 121111 (2011).

M. Bieler, G. Hein, K. Pierz, U. Siegner, and M. Koch, "Ultrafast electric field measurements in semiconductors by spectral integration over electric field-induced Franz-Keldysh oscillations," Appl. Phys. Lett. 87, 042102 (2005).

3. Characterisation of electronic and optoelectronic high-frequency devices

H. Füser, S. Eichstädt, K. Baaske, C. Elster, K. Kuhlmann, R. Judaschke, K. Pierz, and M. Bieler, "Optoelectronic time-domain characterization of a 100 GHz sampling oscilloscope," Measurement Science and Technology 23, 025201 (2012).

M. Bieler, S. Seitz, M. Spitzer, K. Pierz, G. Hein, U. Siegner, M. A. Basu, A. J. A. Smith, and M. R. Harper, "Rise-time calibration of 50 GHz sampling oscilloscopes: Intercomparison between PTB and NPL," IEEE Trans. Instrum. Meas. 56, 266 (2007).

S. Seitz, M. Bieler, M. Spitzer, K. Pierz, G. Hein, and U. Siegner, "Optoelectronic measurement of the transfer function and time response of a 70 GHz sampling oscilloscope," Meas. Sci. Technol. 16, L7–L9 (2005).

4. Time-resolved light-matter interaction

C.B. Schmidt, S. Priyadarshi, K. Pierz, and M. Bieler, "Ultrafast magneto-photocurrents as probe of anisotropy relaxation in GaAs," Applied Physics Letters 108, 102104 (2016).

C. B. Schmidt, S. Priyadarshi, S. A. Tarasenko, and M. Bieler, "Ultrafast magneto-photocurrents in GaAs: Separation of surface and bulk contributions," Applied Physics Letters 106, 142108 (2015).

S. Priyadarshi, K. Pierz, and M. Bieler, "Detection of the Anomalous Velocity with Subpicosecond Time Resolution in Semiconductor Nanostructures," Phys. Rev. Lett. 115, 257401 (2015).

S. Priyadarshi, K. Pierz, and M. Bieler, "All-optically induced currents resulting from frequency-modulated coherent polarization," Applied Physics Letters 102, 112102–112102–5 (2013).

S. Priyadarshi, K. Pierz, and M. Bieler, "All-Optically Induced Ultrafast Photocurrents: Beyond the Instantaneous Coherent Response," Phys. Rev. Lett. 109, 216601 (2012).

S. Priyadarshi, K. Pierz, U. Siegner, P. Dawson, and M. Bieler, "All-optical generation of coherent in-plane charge oscillations in GaAs quantum wells," Phys. Rev. B 83, 121307 (2011).

S. Priyadarshi, A. M. Racu, K. Pierz, U. Siegner, M. Bieler, H. T. Duc, J. Förstner, and T. Meier, "Reversal of Coherently Controlled Ultrafast Photocurrents by Band Mixing in Undoped GaAs Quantum Wells," Phys. Rev. Lett. 104, 217401 (2010).

S. Priyadarshi, M. Leidinger, K. Pierz, A. M. Racu, U. Siegner, M. Bieler, and P. Dawson, "Terahertz spectroscopy of shift currents resulting from asymmetric (110)-oriented GaAs/AlGaAs quantum wells," Appl. Phys. Lett. 95, 151110 (2009).

G. C. Loata, M. Bieler, G. Hein, and U. Siegner, "Optically induced voltage pulses by resonant excitation of a passive GaAs photoconductive switch," J. Opt. Soc. Am. B 25, 1261–1264 (2008).

M. Bieler, "THz generation from resonant excitation of semiconductor nanostructures: Investigation of second-order nonlinear optical effects," IEEE Journal of Selected Topics in Quantum Electronics 14, 458–469 (2008).

M. Bieler, K. Pierz, U. Siegner, and P. Dawson, "Shift currents from symmetry reduction and Coulomb effects in GaAs/AlGaAs quantum wells," Phys. Rev. B 76, 161304(R) (2007).

M. Bieler, K. Pierz, and U. Siegner, "Simultaneous generation of shift and injection currents in (110)-grown GaAs/AlGaAs quantum wells," J. Appl. Phys. 100, 83710 (2006).

M. Bieler, K. Pierz, U. Siegner, and P. Dawson, "Quantum interference currents by excitation of heavy- and light-hole excitons in GaAs/AlGaAs quantum wells," Phys. Rev. B 73, 241312(R) (2006).