We demonstrate that the different magnetic states of a Mn12 molecule can be distinguished in a two-probe transport experiment from a complete knowledge of the current-voltage curve. Our results, obtained with state-of-the-art non-equilibrium transport methods combined with density functional theory, demonstrate that spin configuration-specific negative differential resistances (NDRs) appear in the I-V curves. These originate from the interplay between electron localization and the re-hybridization of the molecular levels in an external electric field and allow the detection of the molecule's spin-state.
Enabling Electrical Readout of Néel vector reversal in a van der Waals Antiferromagnet
Carnegie Mellon University(卡内基梅隆大学);The University of Texas at Dallas(达拉斯大学);Kansas State University(堪萨斯州立大学);National Institute for Materials Science(国立材料研究所)
Sign-resolved nanoscale readout and control of hidden antiferromagnetic spin order
University of Regensburg(雷根斯堡大学);Physikalisch-Technische Bundesanstalt(德国联邦物理技术研究院);RWTH Aachen University(亚琛工业大学);Charles University(查理大学);University of Tennessee, Knoxville(田纳西大学诺克斯维尔分校);Czech Academy of Sciences(捷克科学院);Bundesanstalt für Materialforschung und -prüfung (BAM)(德国联邦材料研究与测试研究所)
Persistent Interfacial Topological Hall Effect Demonstrating Electrical Readout of Topological Spin Structures in Insulators
University of Nebraska, Lincoln(内布拉斯加大学林肯分校);Fudan University(复旦大学);North Carolina State University(北卡罗来纳州立大学);Georgia Institute of Technology(佐治亚理工学院);Bryn Mawr College(布林茅尔学院);Argonne National Laboratory(阿贡国家实验室)
Spin qubits with electrically gated polyoxometalate molecules
自旋量子比特为实现量子计算机提供了最有前途的途径之一。半导体量子点的最新结果表明,电控门控方案特别适合于实现一组通用的量子逻辑门。然而,对于这种半导体量子点来说,可扩展到更大数量的量子位仍然是一个问题。相比之下,化学自下而上的方法允许人们产生相同的单位,其中局域自旋代表量子位。分子磁性已经产生了广泛的系统与定制的性能,但分子允许电门控一直缺乏。在这里,我们建议使用聚氧乙烯酸盐[PMo 1/2 O 40(VO)2]q-,其中两个本地化的自旋-1/2可以通过中央核心的电子耦合。通过分子氧化还原电位的电操纵,可以改变核的电荷。通过这种设置,可以实现两个量子位门和量子位读出。
Two-Terminal Electrical Detection of the Néel Vector via Longitudinal Antiferromagnetic Nonreciprocal Transport
School of Physics, Peking University(北京大学物理学院);State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University(清华大学物理系低维量子物理国家重点实验室);Institute for Advanced Study, Tsinghua University(清华大学高等研究院);Frontier Science Center for Quantum Information(量子信息前沿科学中心);Collaborative Innovation Center of Quantum Matter(量子物质协同创新中心);Center for High Energy Physics, Peking University(北京大学高能物理中心)