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Showing 1–13 of 13 results
Advanced filters: Author: Joaquin Fernandez-Rossier Clear advanced filters

  • Control of quantum interference in engineered atomic-scale systems could enable precise manipulation of quantum states, however it has remained challenging. Here the authors demonstrate electrically tunable quantum interference in a system of Ti atoms on MgO surface, using a scanning probe microscope setup.

    • Hao Wang
    • Jing Chen
    • Kai Yang
    ResearchOpen Access
    Nature Communications
    Volume: 16, P: 1-9

  • Using scanning tunnelling microscopy and spectroscopy, fractional edge excitations are observed in nanographene spin chains, enabling the potential to study strongly correlated phases in purely organic materials.

    • Shantanu Mishra
    • Gonçalo Catarina
    • Roman Fasel
    Research
    Nature
    Volume: 598, P: 287-292

  • Graphene nanostructures with π magnetism offer a chemically tunable platform to explore correlated magnetic interactions. Here, the on-surface synthesis of spin-1/2 antiferromagnetic Heisenberg chains based on N-doped nanographene units is reported. The spin chains are synthesized through ortho sp3 C–H activated polymerization and exhibit parity-dependent magnetic ground states.

    • Xiaoshuai Fu
    • Li Huang
    • Hong-Jun Gao
    Research
    Nature Synthesis
    Volume: 4, P: 684-693

  • Open-shell nanographenes are used to fabricate length-controlled antiferromagnetic spin-1/2 Heisenberg chains. It is revealed that the spin excitation spectra evolve from gapped to gapless following a power-law dependence on chain length, along with the visualization of the standing waves of confined single spinons.

    • Chenxiao Zhao
    • Lin Yang
    • Roman Fasel
    ResearchOpen Access
    Nature Materials
    Volume: 24, P: 722-727

  • A series of breakthroughs is making the fabrication of single-atom devices possible. Their behaviour is controlled by the quantum state of single dopants, and they hold promise for applications such as quantum bits, magnetometers and memories.

    • Joaquin Fernández Rossier
    News & Views
    Nature Materials
    Volume: 12, P: 480-481

  • Magnetism in metals is typically considered an intrinsic property of the material. But when the diameter of a magnetic wire is reduced to atomic dimensions, the material's magnetic properties are strongly altered, to the point where magnetism can even be eliminated. This is an unexpected realization of the so-called Kondo effect, and highlights the need to take into account atomic-scale geometry when investigating the properties of magnetic nanostructures.

    • M. Reyes Calvo
    • Joaquín Fernández-Rossier
    • Carlos Untiedt
    Research
    Nature
    Volume: 458, P: 1150-1153

  • The nuclear spin of individual atoms is polarized by the tunnelling current from a scanning tunnelling microscope tip, enabling nuclear magnetic resonance to sense the local magnetic environment.

    • Kai Yang
    • Philip Willke
    • Christopher P. Lutz
    Research
    Nature Nanotechnology
    Volume: 13, P: 1120-1125

  • The spin excitation energy and the magnetic anisotropy of individual atoms can be modified by varying the exchange coupling of the atomic spin to metallic leads.

    • Jenny C. Oberg
    • M. Reyes Calvo
    • Cyrus F. Hirjibehedin
    Research
    Nature Nanotechnology
    Volume: 9, P: 64-68

  • Producing single-walled inorganic nanotubes is challenging because their multi-walled counterparts are favored during synthesis. Here, the authors produce one-dimensional single-walled CrI3 encapsulated within multi-walled carbon nanotubes and explore their magnetic properties.

    • Ihsan Çaha
    • Aqrab ul Ahmad
    • Francis Leonard Deepak
    ResearchOpen Access
    Communications Chemistry
    Volume: 8, P: 1-8

  • Open-shell nanographenes are promising for quantum technologies, but their magnetic stability has remained limited by weak exchange coupling. Now, two large rhombus-shaped nanographenes with zigzag peripheries, one with 48 carbon atoms and the other with 70, have been synthesized on gold and copper surfaces. The 70-carbon compound exhibits a large magnetic exchange coupling exceeding 100 meV.

    • Shantanu Mishra
    • Xuelin Yao
    • Roman Fasel
    Research
    Nature Chemistry
    Volume: 13, P: 581-586

  • Although quantum physics underpins the behaviour of nanoscale objects, its role in nanoscience has been mostly limited to determining the static, equilibrium properties of small systems. This Review describes seminal developments and new directions for the explicit exploitation of quantum coherence in nanoscale systems, a research area termed quantum-coherent nanoscience.

    • Andreas J. Heinrich
    • William D. Oliver
    • Andrea Morello
    Reviews
    Nature Nanotechnology
    Volume: 16, P: 1318-1329