Manfred Fiebig


Last Name

Fiebig

First Name

Manfred

ORCID

0000-0003-4998-7179

Organisational unit

03918 - Fiebig, Manfred / Fiebig, Manfred

Search Results

Publications1 - 10 of 269
  • Coherent terahertz control of antiferromagnetic spin waves
    Item type: Journal Article
    Kampfrath, Tobias; Sell, Alexander; Klatt, Gregor; et al. (2011)
    Nature Photonics
  • Frequency dependent polarisation switching in h-ErMnO3
    Item type: Journal Article
    Ruff, Alexander; Li, Ziyu; Loidl, Alois; et al. (2018)
    Applied Physics Letters
    We report an electric-field poling study of the geometrically-driven improper ferroelectric h-ErMnO3. From a detailed dielectric analysis, we deduce the temperature and the frequency dependent range for which single-crystalline h-ErMnO3 exhibits purely intrinsic dielectric behaviour, i.e., free from the extrinsic so-called Maxwell-Wagner polarisations that arise, for example, from surface barrier layers. In this regime, ferroelectric hysteresis loops as a function of frequency, temperature, and applied electric fields are measured, revealing the theoretically predicted saturation polarisation on the order of 5–6 μC/cm2. Special emphasis is put on frequency dependent polarisation switching, which is explained in terms of domain-wall movement similar to proper ferroelectrics. Controlling the domain walls via electric fields brings us an important step closer to their utilization in domain-wall-based electronics.
  • Reversible long-range domain wall motion in an improper ferroelectric
    Item type: Journal Article
    Zahn, Manuel; Müller, Aaron Merlin; Kelley, Kyle P.; et al. (2025)
    Nature Communications
    Reversible ferroelectric domain wall movements beyond the 10 nm range associated with Rayleigh behavior are usually restricted to specific defect-engineered systems. Here, we demonstrate that such long-range movements naturally occur in the improper ferroelectric ErMnO3 during electric-field-cycling. We study the electric-field-driven motion of domain walls, showing that they readily return to their initial position after having traveled distances exceeding 250 nm. By applying switching spectroscopy band-excitation piezoresponse force microscopy, we track the domain wall movement with nanometric spatial precision and analyze the local switching behavior. Phase field simulations show that the reversible long-range motion is intrinsic to the hexagonal manganites, linking it to their improper ferroelectricity and topologically protected structural vortex lines, which serve as anchor point for the ferroelectric domain walls. Our results give new insight into the local dynamics of domain walls in improper ferroelectrics and demonstrate the possibility to reversibly displace domain walls over much larger distances than commonly expected for ferroelectric systems in their pristine state, ensuring predictable device behavior for applications such as tunable capacitors or sensors.
  • Multilevel polarization switching in ferroelectric thin films
    Item type: Journal Article
    Sarott, Martin F.; Rossell, Marta D.; Fiebig, Manfred; et al. (2022)
    Nature Communications
    Ferroic order is characterized by hystereses with two remanent states and therefore inherently binary. The increasing interest in materials showing non-discrete responses, however, calls for a paradigm shift towards continuously tunable remanent ferroic states. Device integration for oxide nanoelectronics furthermore requires this tunability at the nanoscale. Here we demonstrate that we can arbitrarily set the remanent ferroelectric polarization at nanometric dimensions. We accomplish this in ultrathin epitaxial PbZr0.52Ti0.48O3 films featuring a dense pattern of decoupled nanometric 180° domains with a broad coercive-field distribution. This multilevel switching is achieved by driving the system towards the instability at the morphotropic phase boundary. The phase competition near this boundary in combination with epitaxial strain increases the responsiveness to external stimuli and unlocks new degrees of freedom to nano-control the polarization. We highlight the technological benefits of non-binary switching by demonstrating a quasi-continuous tunability of the non-linear optical response and of tunnel electroresistance.
  • Ferroic nature of magnetic toroidal order
    Item type: Journal Article
    Zimmermann, Anne S.; Meier, Dennis; Fiebig, Manfred (2014)
    Nature Communications
  • Nonlinear Optics of Antiferromagnetic Compounds
    Item type: Book Chapter
    Tanabe, Y.; Fiebig, Manfred; Hanamura, E. (2000)
    Springer Series in Solid-State Sciences ~ Magneto-optics
  • Polarization control at spin-driven ferroelectric domain walls
    Item type: Journal Article
    Leo, Naëmi; Bergman, Anders; Cano, Andres; et al. (2015)
    Nature Communications
  • Local electric-field control of multiferroic spin-spiral domains in TbMnO3
    Item type: Journal Article
    Schönherr, Peggy; Manz, Sebastian; Kürten, Lukas; et al. (2020)
    npj Quantum Materials
    Spin-spiral multiferroics exhibit a magnetoelectric coupling effects, leading to the formation of hybrid domains with inseparably entangled ferroelectric and antiferromagnetic order parameters. Due to this strong magnetoelectric coupling, conceptually advanced ways for controlling antiferromagnetism become possible and it has been reported that electric fields and laser pulses can reversibly switch the antiferromagnetic order. This switching of antiferromagnetic spin textures is of great interest for the emergent field of antiferromagnetic spintronics. Established approaches, however, require either high voltages or intense laser fields and are currently limited to the micrometer length scale, which forfeits the technological merit. Here, we image and control hybrid multiferroic domains in the spin-spiral system TbMnO3 using low-temperature electrostatic force microscopy (EFM). First, we show that image generation in EFM happens via surface screening charges, which allows for probing the previously hidden magnetically induced ferroelectric order in TbMnO3 (PS = 6 × 10−4 C/m2). We then set the antiferromagnetic domain configuration by acting on the surface screening charges with the EFM probe tip. Our study enables detection of entangled ferroelectric and antiferromagnetic domains with high sensitivity. The spatial resolution is limited only by the physical size of the probe tip, introducing a pathway towards controlling antiferromagnetic order at the nanoscale and with low energy.
  • Optical second harmonic imaging as a diagnostic tool for monitoring epitaxial oxide thin-film growth
    Item type: Journal Article
    Rubano, Andrea; Gunter, Tim; Lilienblum, Martin; et al. (2015)
    Applied Surface Science
  • Magnetoelectric Effects in Multiferroic Manganites
    Item type: Conference Paper
    Fiebig, Manfred; Lottermoser, Thomas; Lonkai, Thomas; et al. (2005)
    Journal of Magnetism and Magnetic Materials
    A variety of bulk as well as local magnetoelectric effects are observed in RMnO3 compounds with R ¼ Sc; Y;In; Ho; Er; Tm; Yb; Lu due to the coexistence of ferroelectric and multiple magnetic ordering. On the one hand, ‘gigantic’ magnetoelectric bulk effects, where magnetic phase control is exerted by applied electric or magnetic fields, are revealed. On the other hand, interaction of domain walls leads to a coupling of ferroelectric and antiferromagnetic domains, and a contribution to the linear magnetoelectric effect that is induced in the antiferromagnetic domain walls is identified. The effects are observed by linear and nonlinear magnetooptical techniques and explained microscopically by the interplay of magnetic exchange, wall magnetization, and ferroelectric distortion
Publications1 - 10 of 269