2,294 research outputs found

    Changing policies for the automotive industry in an 'old' industrial region:an open innovation model for the UK West Midlands?

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    Automobile manufacture in the UK West Midlands peaked during the 1950s and early 1960s but, with overseas competition, declined thereafter. Successive policies, such as government supported mergers to form the British Motor Corporation in the 1950s, green-field development away from the region in the 1960s, nationalisation of the (then) British Leyland in the 1970s, Japanese FDI in the 1980s and the Rover-centric Accelerate Project in the 1990s have failed to halt the decline. Since early 2000, regional policy has been the responsibility of the Regional Development Agency, Advantage West Midlands. The RDA has moved away from traditional support based on the needs of big companies or ‘champions’ and adopted an approach centred on a mix of small and large businesses and high level research, and – arguably – an ‘open innovation’ model. Here, we examine these new policies and their potential to create an innovative and competitive regional environment

    Rover and out? Globalisation, the West Midlands auto cluster, and the end of MG Rover

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    This paper sets the scene for this Policy Studies special issue on plant closures by outlining the form of the auto cluster in the West Midlands, the nature of structural changes unfolding in the industry, and the decline and eventual collapse of MG Rover (MGR). Structural changes highlighted include: greater pressure on firms to recover costs when technological change has been intensifying, driving up the costs of new model development; increased international sourcing of modular components; and a shift of final assembly operations towards lower cost locations. All of these make maintaining mature clusters such as the West Midlands more challenging for firms and policy makers. The paper then looks at ‘what went wrong’ at MGR. Given long-run problems at the firm and its inability to recover costs, BMW's sale of the firm in 2000 left MGR virtually dead on its feet, and by 2002/2003 it was clear to many that the firm was running out of time. Whilst recognising that the firm's demise was ultimately a long-term failure of management, the paper also looks at other contributing factors, including government policy mistakes over the years, such as the misguided ‘national champions’ approach in the 1950s and 1960s, a failure to integrate activities under nationalisation in the 1970s, a mistaken privatisation to British Aerospace in the 1980s, and a downside of competition policy in ‘allowing’ the sale to a largely inappropriate owner in BMW in the 1990s. The considerable volatility of sterling in recent years hastened the firm's eventual demise

    Breaking of valley degeneracy by magnetic field in monolayer MoSe2

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    Using polarization-resolved photoluminescence spectroscopy, we investigate valley degeneracy breaking by out-of-plane magnetic field in back-gated monolayer MoSe2_2 devices. We observe a linear splitting of −0.22meVT-0.22 \frac{\text{meV}}{\text{T}} between luminescence peak energies in σ+\sigma_{+} and σ−\sigma_{-} emission for both neutral and charged excitons. The optical selection rules of monolayer MoSe2_2 couple photon handedness to the exciton valley degree of freedom, so this splitting demonstrates valley degeneracy breaking. In addition, we find that the luminescence handedness can be controlled with magnetic field, to a degree that depends on the back-gate voltage. An applied magnetic field therefore provides effective strategies for control over the valley degree of freedom.Comment: expanded discussion section, corrected typo in eq.

    Thickness dependence of spin-orbit torques generated by WTe2

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    We study current-induced torques in WTe2/permalloy bilayers as a function of WTe2 thickness. We measure the torques using both second-harmonic Hall and spin-torque ferromagnetic resonance measurements for samples with WTe2 thicknesses that span from 16 nm down to a single monolayer. We confirm the existence of an out-of-plane antidamping torque, and show directly that the sign of this torque component is reversed across a monolayer step in the WTe2. The magnitude of the out-of-plane antidamping torque depends only weakly on WTe2 thickness, such that even a single-monolayer WTe2 device provides a strong torque that is comparable to much thicker samples. In contrast, the out-of-plane field-like torque has a significant dependence on the WTe2 thickness. We demonstrate that this field-like component originates predominantly from the Oersted field, thereby correcting a previous inference drawn by our group based on a more limited set of samples.Comment: 8 pages, 8 figure

    Lies, Discrimination, and Internalized Racism: Findings from the lab.

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    We simulate a job application/hiring market in the lab to examine racial discrimination. We find little evidence of ability differences based on race but we find taste-based racism between groups and statistical racism within groups. When candidates are given the opportunity to lie about their abilities, all groups discriminate against Blacks, suggesting statistical discrimination. But Whites continue to discriminate against Blacks when actual abilities of the candidate are known, suggesting taste-based discrimination. In contrast to the bulk of studies that attempt to establish racism in general as either a taste-based or statistical, our design allows us to show that the type of discrimination can depend on the personal characteristics of the discriminating individual along with the contextual information available

    Electrical Control of 2D Magnetism in Bilayer CrI3

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    The challenge of controlling magnetism using electric fields raises fundamental questions and addresses technological needs such as low-dissipation magnetic memory. The recently reported two-dimensional (2D) magnets provide a new system for studying this problem owing to their unique magnetic properties. For instance, bilayer chromium triiodide (CrI3) behaves as a layered antiferromagnet with a magnetic field-driven metamagnetic transition. Here, we demonstrate electrostatic gate control of magnetism in CrI3 bilayers, probed by magneto-optical Kerr effect (MOKE) microscopy. At fixed magnetic fields near the metamagnetic transition, we realize voltage-controlled switching between antiferromagnetic and ferromagnetic states. At zero magnetic field, we demonstrate a time-reversal pair of layered antiferromagnetic states which exhibit spin-layer locking, leading to a remarkable linear dependence of their MOKE signals on gate voltage with opposite slopes. Our results pave the way for exploring new magnetoelectric phenomena and van der Waals spintronics based on 2D materials.Comment: To appear in Nature Nanotechnolog

    Electrical switching of a moir\'{e} ferroelectric superconductor

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    Electrical control of superconductivity is critical for nanoscale superconducting circuits including cryogenic memory elements, superconducting field-effect transistors (FETs), and gate-tunable qubits. Superconducting FETs operate through continuous tuning of carrier density, but there has not yet been a bistable superconducting FET, which could serve as a new type of cryogenic memory element. Recently, unusual ferroelectricity in Bernal-stacked bilayer graphene aligned to its insulating hexagonal boron nitride (BN) gate dielectrics was discovered. Here, we report the observation of ferroelectricity in magic-angle twisted bilayer graphene (MATBG) with aligned BN layers. This ferroelectric behavior coexists alongside the strongly correlated electron system of MATBG without disrupting its correlated insulator or superconducting states. This all-van der Waals platform enables configurable switching between different electronic states of this rich system. To illustrate this new approach, we demonstrate reproducible bistable switching between the superconducting, metallic, and correlated insulator states of MATBG using gate voltage or electric displacement field. These experiments unlock the potential to broadly incorporate this new moir\'{e} ferroelectric superconductor into highly tunable superconducting electronics
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