Electron dynamics in inhomogeneous magnetic fields.

PAPER pubmed Journal of physics. Condensed matter : an Institute of Physics journal 2010 Review Effect: unclear Evidence: Insufficient

Read original paper → DOI: 10.1088/0953-8984/22/25/253201 PMID: 21393794 Evidence Lab

Abstract

This review explores the dynamics of two-dimensional electrons in magnetic potentials that vary on scales smaller than the mean free path. The physics of microscopically inhomogeneous magnetic fields relates to important fundamental problems in the fractional quantum Hall effect, superconductivity, spintronics and graphene physics and spins out promising applications which will be described here. After introducing the initial work done on electron localization in random magnetic fields, the experimental methods for fabricating magnetic potentials are presented. Drift-diffusion phenomena are then described, which include commensurability oscillations, magnetic channelling, resistance resonance effects and magnetic dots. We then review quantum phenomena in magnetic potentials including magnetic quantum wires, magnetic minibands in superlattices, rectification by snake states, quantum tunnelling and Klein tunnelling. The third part is devoted to spintronics in inhomogeneous magnetic fields. This covers spin filtering by magnetic field gradients and circular magnetic fields, electrically induced spin resonance, spin resonance fluorescence and coherent spin manipulation.

AI evidence extraction

At a glance

Study type

Review

Effect direction

unclear

Population

—

Sample size

—

Exposure

Evidence strength

Insufficient

Confidence: 74% · Peer-reviewed: yes

Main findings

The review summarizes theoretical and experimental work on two-dimensional electron dynamics in microscopically inhomogeneous magnetic potentials, covering localization, drift-diffusion effects, quantum transport phenomena, and spintronic applications involving magnetic field gradients and related structures.

Outcomes measured

electron dynamics in inhomogeneous magnetic fields
electron localization in random magnetic fields
drift-diffusion phenomena (commensurability oscillations, magnetic channelling, resistance resonance effects, magnetic dots)
quantum phenomena in magnetic potentials (magnetic quantum wires, magnetic minibands, snake-state rectification, quantum tunnelling, Klein tunnelling)
spintronics phenomena (spin filtering by field gradients/circular fields, electrically induced spin resonance, spin resonance fluorescence, coherent spin manipulation)

View raw extracted JSON

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    "study_type": "review",
    "exposure": {
        "band": null,
        "source": null,
        "frequency_mhz": null,
        "sar_wkg": null,
        "duration": null
    },
    "population": null,
    "sample_size": null,
    "outcomes": [
        "electron dynamics in inhomogeneous magnetic fields",
        "electron localization in random magnetic fields",
        "drift-diffusion phenomena (commensurability oscillations, magnetic channelling, resistance resonance effects, magnetic dots)",
        "quantum phenomena in magnetic potentials (magnetic quantum wires, magnetic minibands, snake-state rectification, quantum tunnelling, Klein tunnelling)",
        "spintronics phenomena (spin filtering by field gradients/circular fields, electrically induced spin resonance, spin resonance fluorescence, coherent spin manipulation)"
    ],
    "main_findings": "The review summarizes theoretical and experimental work on two-dimensional electron dynamics in microscopically inhomogeneous magnetic potentials, covering localization, drift-diffusion effects, quantum transport phenomena, and spintronic applications involving magnetic field gradients and related structures.",
    "effect_direction": "unclear",
    "limitations": [],
    "evidence_strength": "insufficient",
    "confidence": 0.7399999999999999911182158029987476766109466552734375,
    "peer_reviewed_likely": "yes",
    "keywords": [
        "inhomogeneous magnetic fields",
        "two-dimensional electrons",
        "magnetic potentials",
        "random magnetic fields",
        "electron localization",
        "drift-diffusion",
        "commensurability oscillations",
        "magnetic channelling",
        "quantum wires",
        "superlattices",
        "snake states",
        "quantum tunnelling",
        "Klein tunnelling",
        "spintronics",
        "spin filtering",
        "spin resonance"
    ],
    "suggested_hubs": []
}

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