Semiconductors articles within Nature Physics

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  • Article
    | Open Access

    A successful silicon spin qubit design should be rapidly scalable by benefiting from industrial transistor technology. This investigation of exchange interactions between two FinFET qubits provides a guide to implementing two-qubit gates for hole spins.

    • Simon Geyer
    • , Bence Hetényi
    •  & Andreas V. Kuhlmann

  • Article |

    Time crystals spontaneously produce periodic oscillations that are robust to perturbations. A time crystal phase with a long coherence time has now been produced using the electron and nuclear spins of a semiconductor sample.

    • A. Greilich
    • , N. E. Kopteva
    •  & M. Bayer

  • Editorial |

    Two-dimensional crystals have revolutionized fundamental research across a staggering range of disciplines. We take stock of the progress gained after twenty years of work.

  • Article |

    The Haldane model is a paradigmatic example of topological behaviour but has not previously been implemented in condensed-matter experiments. Now a moiré bilayer is shown to realize this model with the accompanying quantized transport response.

    • Wenjin Zhao
    • , Kaifei Kang
    •  & Kin Fai Mak

  • News & Views |

    Semiconducting dipolar excitons — bound states of electrons and holes — in artificial moiré lattices constitute a promising condensed matter system to explore the phase diagram of strongly interacting bosonic particles.

    • Nadine Leisgang

  • News & Views |

    Measurements of two neighbouring silicon-based qubits show that the charge noise they each experience is correlated, suggesting a common origin. Understanding these correlations is crucial for performing error correction in these systems.

    • Łukasz Cywiński

  • Article |

    The behaviour of a superconductor can be altered by changing its symmetry properties. Coherently coupling two Josephson junctions breaks time-reversal and inversion symmetries, giving rise to a device with a controllable superconducting diode effect.

    • Sadashige Matsuo
    • , Takaya Imoto
    •  & Seigo Tarucha

  • Article |

    Switching of magnetic behaviour is one of the main ideas that drives spintronics. Now, magnetic switching via spin-orbit torque is shown in a moiré bilayer, introducing a platform for spintronic applications.

    • C. L. Tschirhart
    • , Evgeny Redekop
    •  & A. F. Young

  • News & Views |

    Despite its technological importance, there remain gaps in our understanding of silicon’s electronic behaviour, especially at low temperatures. Measurements close to a metal–insulator transition show signs of a collective many-body quantum state.

    • Mark Lee

  • Perspective |

    Majorana zero modes are emergent excitations in topological superconductors. This Perspective introduces the physics of these modes, recaps the recent history of the experimental search for them and discusses the future prognosis for success.

    • Sankar Das Sarma

  • Article |

    The ultrafast structural dynamics in 2D perovskites are an important part of their non-equilibrium properties. Now, their visualization reveals a light-induced reduction in the antiferro-distortion initiated by the electron–hole plasma.

    • Hao Zhang
    • , Wenbin Li
    •  & Aditya D. Mohite

  • Article |

    Established methods of controlling silicon spin qubits require high-frequency signals that can be difficult to implement for various reasons. Exploiting the coupling between spin and valley degrees of freedom provides an alternative approach.

    • Xinxin Cai
    • , Elliot J. Connors
    •  & John M. Nichol

  • Letter |

    A heterostructure supports the equilibrium bound states of an electron and hole—excitons—that strongly interact with each other. This provides a platform for the quantum simulation of bosonic lattice models.

    • Jie Gu
    • , Liguo Ma
    •  & Kin Fai Mak

  • Letter |

    A semiconductor platform for experimentally investigating the multiorbital Bose–Hubbard model with long-range interactions is demonstrated. The interactions between the excitons are strong enough to reach the Mott insulator regime.

    • Camille Lagoin
    • , Stephan Suffit
    •  & François Dubin

  • Article |

    Atoms in a semiconductor can have non-zero nuclear spins, creating a large ensemble with many quantum degrees of freedom. An electron spin coupled to the nuclei of a semiconductor quantum dot can witness the creation of entanglement within the ensemble.

    • Dorian A. Gangloff
    • , Leon Zaporski
    •  & Mete Atatüre

  • News & Views |

    A microscopy technique allows the identification of parameters in a paradigmatic model of condensed-matter physics.

    • Isabel Guillamón

  • News & Views |

    Recent advances in spectroscopy give access to the decay time of excitations in disordered insulating silicon close to the metal–insulator transition, revealing similarities to high-temperature cuprate superconductors.

    • Eduardo Miranda

  • Letter |

    Transport measurements show that spontaneous symmetry breaking plays a crucial role in the correlated insulating and metallic states in twisted double bilayer graphene.

    • Minhao He
    • , Yuhao Li
    •  & Matthew Yankowitz

  • Article |

    High-quality WSe2–MoSe2 heterostructures support strong coupling between the two layers, which is associated with tight hybridization and effective charge separation. In these structures, the bands of the interlayer excitons can be pressure-engineered.

    • Juan Xia
    • , Jiaxu Yan
    •  & Zexiang Shen

  • Letter |

    A quasiparticle in Andreev levels was coupled to a superconducting microwave resonator and its spin was monitored in real time. This has potential applications in the readout of superconducting spin qubits and measurements of Majorana fermions.

    • M. Hays
    • , V. Fatemi
    •  & M. H. Devoret

  • Letter |

    The spin polarization of a quantum Hall system is determined by a spin-resolved tunnelling method. This technique shows a substantial regime where the weakly interacting composite fermion picture is not valid.

    • H. M. Yoo
    • , K. W. Baldwin
    •  & R. C. Ashoori

  • Article |

    Majorana bound states at the end of nanowires may be used for quantum computation if they can be coupled sufficiently strongly. Here, the Copenhagen lab show strong and tunable coupling, a step along the road towards devices.

    • David M. T. van Zanten
    • , Deividas Sabonis
    •  & Charles M. Marcus

  • News & Views |

    A layer-by-layer study of TaSe2 shows how this material becomes increasingly insulating as it thins to a monolayer. Scanning tunnelling microscopy reveals the electronic correlations underlying this insulator with atomic resolution.

    • Katharina J. Franke
    •  & Felix von Oppen

  • Letter |

    The authors use spin waves to demonstrate that charged quantum Hall skyrmions exist away from integer filling. They also see evidence of several fractional skyrmion states.

    • H. Zhou
    • , H. Polshyn
    •  & A. F. Young

  • Letter |

    Conventional on-axis electron energy-loss spectroscopy can detect vibrational modes in crystals and amorphous solids at atomic resolution by isolating the specific signal from the background signal and the dipole contributions.

    • Kartik Venkatraman
    • , Barnaby D. A. Levin
    •  & Peter A. Crozier

  • News & Views |

    Spatially resolved measurements of twisted bilayer graphene reveal more details of the strongly correlated electrons.

    • Adina Luican-Mayer

  • Letter |

    Transport measurements on twisted bilayer graphene show that a large linear-in-temperature increase in resistivity exists for many twist angles. This may have implications for the mechanism of superconductivity in this material.

    • Hryhoriy Polshyn
    • , Matthew Yankowitz
    •  & Andrea F. Young

  • Letter |

    It is shown that composite fermions in the fractional quantum Hall regime form paired states in double-layer graphene. Pairing between layers gives a phase similar to an exciton condensate and pairing within a layer may lead to non-abelian states.

    • J. I. A. Li
    • , Q. Shi
    •  & C. R. Dean

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