The (100) surfaces of chromium and vanadium: Reconsiderations of their structure and reactivity

Foord, John S.; Reed, Alison; Lambert, Richard M.

doi:10.1016/0039-6028(83)90095-x

Cited by 53 publications

(10 citation statements)

References 16 publications

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“…27 Sample preparation and characterization of V͑100͒ presented significant challenges, as noted in prior publications. 13,15,[28][29][30][31][32][33][34] The first attempt to determine the surface structure of V͑100͒ ͑Ref. 28͒ was carried out on a ͑5 ϫ 1͒ reconstructed surface which was believed to be clean.…”

Section: Methodsmentioning

confidence: 99%

Multilayer relaxation and search for ferromagnetic order at the (100) surface of bulk paramagnetic vanadium

2007

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Low-energy-electron-diffraction ͑LEED͒ intensity measurements and multiple-scattering analysis for V͑100͒, supported by accurate characterization of surface impurity concentrations based on Auger-electron spectroscopy, are used to obtain a meaningful extrapolation of the first-layer relaxation to the clean surface value: d 12 = 1.36± 0.05 Å, corresponding to ⌬ 12 = −10% ± 3% relative to the bulk value d 0 = 1.514 Å. A highsensitivity probe for surface magnetism based on magneto-optic Kerr effect polarimetry using the cleanest surfaces achieved in the LEED experiment ͑ϳ5% C͒ yields a ͑sensitivity limited͒ null result with an estimated upper limit of 0.05 B /surface atom. These results are discussed within the framework of related experiments and in relation to the predictive accuracy of ab initio calculations that explore the surface structure and magnetism of V͑100͒ both of which are sensitive to different approximations for the exchange-correlation potential in density-functional theory.

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Section: Methodsmentioning

confidence: 99%

Multilayer relaxation and search for ferromagnetic order at the (100) surface of bulk paramagnetic vanadium

2007

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“…According to the previous experimental studies, both carbon and oxygen atoms can be responsible for c(2 Â 2) reconstructions on Cr. 27 To elucidate the origin of the c(2 Â 2) superstructure, Auger electron spectroscopy (AES) was used. Figure 3 (left) shows the AES spectra induced by 5 keV electrons collected at the Cr surface after annealing for different homoepitaxial buffer layer thicknesses.…”

Section: Methodsmentioning

confidence: 99%

The effect of the MgO buffer layer thickness on magnetic anisotropy in MgO/Fe/Cr/MgO buffer/MgO(001)

Kozioł–Rachwał

Nozaki

Zayets

et al. 2016

Journal of Applied Physics

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The relationship between the magnetic properties and MgO buffer layer thickness d was studied in epitaxial MgO/Fe(t)/Cr/MgO(d) layers grown on MgO(001) substrate in which the Fe thickness t ranged from 0.4 nm to 1.1 nm. For 0.4 nm t 0.7 nm, a non-monotonic coercivity dependence on the MgO buffer thickness was shown by perpendicular magneto-optic Kerr effect magnetometry. For thicker Fe films, an increase in the buffer layer thickness resulted in a spin reorientation transition from perpendicular to the in-plane magnetization direction. Possible origins of these unusual behaviors were discussed in terms of the suppression of carbon contamination at the Fe surface and changes in the magnetoelastic anisotropy in the system. These results illustrate a method to control magnetic anisotropy in MgO/Fe/Cr/MgO(d) via an appropriate choice of MgO buffer layer thickness d.

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“…Fig. 4(a) shows the oxygen reconstruction of the V(100) surface [22,23] in atomic resolution at the base temperature of 310 mK a er the system upgrade. Tunnelling spectroscopy between a superconducting vanadium tip and the V(100) sample shows well-developed coherence peaks and a clear energy gap typical of superconductor-insulatorsuperconductor junctions (see Fig.…”

Section: Instrument Performancementioning

confidence: 99%

Combining Electron Spin Resonance Spectroscopy with Scanning Tunneling Microscopy at High Magnetic Fields

Drost,

Uhl,

Kot

et al. 2021

Preprint

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Magnetic media remain a key in information storage and processing.e continuous increase of storage densities and the desire for quantum memories and computers pushes the limits of magnetic characterisation techniques. Ultimately, a tool which is capable of coherently manipulating and detecting individual quantum spins is needed.e scanning tunnelling microscope (STM) is the only technique which unites the prerequisites of high spatial and energy resolution, low temperature and high magnetic elds to achieve this goal. Limitations in the available frequency range for electron spin resonance STM (ESR-STM) mean that many instruments operate in the thermal noise regime. We resolve challenges in signal delivery to extend the operational frequency range of ESR-STM by more than a factor of two and up to 100 GHz, making the Zeeman energy the dominant energy scale at achievable cryogenic temperatures of a few hundred millikelvin. We present a general method for augmenting existing instruments into ESR-STMs to investigate spin dynamics in the high-eld limit. We demonstrate the performance of the instrument by analysing inelastic tunnelling in a junction driven by a microwave signal and provide proof of principle measurements for ESR-STM.

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The (100) surfaces of chromium and vanadium: Reconsiderations of their structure and reactivity

Cited by 53 publications

References 16 publications

Multilayer relaxation and search for ferromagnetic order at the (100) surface of bulk paramagnetic vanadium

Multilayer relaxation and search for ferromagnetic order at the (100) surface of bulk paramagnetic vanadium

The effect of the MgO buffer layer thickness on magnetic anisotropy in MgO/Fe/Cr/MgO buffer/MgO(001)

Combining Electron Spin Resonance Spectroscopy with Scanning Tunneling Microscopy at High Magnetic Fields

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