Advanced search

Filter By:

Journal Check one or more journals to show results from those journals only.

Choose more journals

Article type Check one or more article types to show results from those article types only.
Subject Check one or more subjects to show results from those subjects only.
Date Choose a date option to show results from those dates only.

Custom date range

Clear all filters
Sort by:
Showing 1–14 of 14 results
Advanced filters: Author: Soogil Lee Clear advanced filters

  • Electric-field-driven ion migration is an effective way to control many physical properties such as electric and magnetic properties of materials. In this research, we demonstrated that remarkably small electric field as low as 105 V/m can effectively modulate resistance of a GdOx microwire due to the lateral motion of oxygen ions. This result enables mimicking a synaptic device with low power consumption like as a brain. Furthermore, huge MR modulation of the GdOx microwire with the electric field provides novel functionality as an electromagnetic device.

    • Jun-Ho Kang
    • Soogil Lee
    • Kab-Jin Kim
    ResearchOpen Access
    NPG Asia Materials
    Volume: 12, P: 1-7

  • The absence of a band gap in graphene hinders its use in electronics. Here, the authors open a band gap as large as 3.9 electronvolts in graphene grown by chemical vapour deposition by treating it in hydrogen plasma, and then use this material to create a room temperature field- effect transistor.

    • Jangyup Son
    • Soogil Lee
    • Jongill Hong
    ResearchOpen Access
    Nature Communications
    Volume: 7, P: 1-7

  • The orbital Hall effect involves the transport of orbital angular momentum perpendicular to an applied charge current, analogous to the spin Hall effect. Here, Lee et al examine magnetic torques present in a Nickel/Tantalum bilayer, clearly demonstrating the contribution of the orbital Hall effect.

    • Dongjoon Lee
    • Dongwook Go
    • Kyung-Jin Lee
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-8

  • Thermoelectric effects can be used to convert waste heat into electricity. One particularly promising thermoelectric mechanism is the spin Seebeck effect as the transverse geometry is ideal for device integration, even if currently it lacks sufficient thermoelectric conversion efficiency. Here, Kim et al, tackle this limitation, showing that oxidizing the ferromagnet layer used in the spin Seebeck effect can significantly enhance the thermoelectric efficiency.

    • Jeong-Mok Kim
    • Seok-Jong Kim
    • Byong-Guk Park
    ResearchOpen Access
    Nature Communications
    Volume: 14, P: 1-6

  • Antiferromagnets have great promise for spin-based information processing, offering both high operation speed, and an immunity to stray fields. Here, Kang et al demonstrate electrical manipulation of the exchange-bias, without the need for a heavy metal layer.

    • Jaimin Kang
    • Jeongchun Ryu
    • Byong-Guk Park
    ResearchOpen Access
    Nature Communications
    Volume: 12, P: 1-7

  • Manipulation of the magnetization is of major importance in spintronics. The authors demonstrate that an electric field triggers a transverse flow of orbital moment: the so-called orbital Hall effect. This enables the efficient magnetization control, holding the promise for fast and miniaturized memories and sensors.

    • Soogil Lee
    • Min-Gu Kang
    • Byong-Guk Park
    ResearchOpen Access
    Communications Physics
    Volume: 4, P: 1-6

  • In a ferrimagnet, there are two magnetic sublattices coupled antiferromagnetically. The dynamics of the two magnetic sublattices isn’t well understood, as the magnetic moments for each reside at different energy levels. Here, Park et al show that the magnetic moments at deeper energy levels show spin-glass like characteristics.

    • Ji-Ho Park
    • Won Tae Kim
    • Kab-Jin Kim
    ResearchOpen Access
    Nature Communications
    Volume: 13, P: 1-7

  • Magneto-optic Kerr effect microscopy is useful for dynamic magnetic studies, but is limited by the weak magneto-optical activity. Here, the authors show that extreme anti-reflection result in a Kerr amplitude as large as 20° and enables real-time detection of sub-wavelength magnetic domain reversals.

    • Dongha Kim
    • Young-Wan Oh
    • Min-Kyo Seo
    ResearchOpen Access
    Nature Communications
    Volume: 11, P: 1-8

  • In a simple bilayer structure, spin torque induced by a reduced crystal symmetry switches perpendicular magnetization reliably at zero magnetic field.

    • Soogil Lee
    • Jeongchun Ryu
    • Byong-Guk Park
    News & Views
    Nature Nanotechnology
    Volume: 16, P: 227-228

  • Unidirectional spin Hall magnetoresistance (USMR) is a directionally dependent feature of a ferromagnetic/normal metal bilayer for which the underlying mechanisms are still under debate. Here, the authors investigate the crystallographic dependence of USMR in epitaxial Cr/Fe bilayers finding that electron-magnon scattering plays an important role.

    • Thanh Huong Thi Nguyen
    • Van Quang Nguyen
    • Sanghoon Kim
    ResearchOpen Access
    Communications Physics
    Volume: 4, P: 1-8