0000000000309426

AUTHOR

Kartick Tarafder

showing 2 related works from this author

Energy- and angle-dependent threshold photoemission magnetic circular dichroism from an ultrathin Co/Pt(111) film

2010

Threshold photoemission magnetic circular dichroism (TPMCD) in one-photon photoemission (1PPE) and two-photon photoemission (2PPE) is measured at an ultrathin Co film grown on Pt(111). Energy-dependent measurements reveal maximum asymmetries directly at the photoemission threshold (1.90% for 1PPE and 11.7% for 2PPE) which weakly decrease with increasing photon energy. The measured TPMCD asymmetries are discussed in two excitation models on the basis of spin-resolved band-structure calculations. For the model of direct band-to-band transitions in other k directions than the direction of observation (Gamma-L) ab initio calculations for 1PPE and 2PPE are performed. The theory is in reasonable …

PhysicsCondensed Matter::Materials ScienceMagnetic circular dichroismAngle of incidence (optics)Ab initio quantum chemistry methodsInverse photoemission spectroscopyAngle-resolved photoemission spectroscopyFresnel equationsPhoton energyAtomic physicsCondensed Matter PhysicsExcitationElectronic Optical and Magnetic MaterialsPhysical Review B
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Dominance of the first excitation step for magnetic circular dichroism in near-threshold two-photon photoemission

2012

Magnetic circular dichroism (MCD) in near-threshold photoemission is measured for a perpendicularly magnetized Cs/Co/Pt(111) film with work function adjusted by Cs adsorption. For one-photon photoe ...

PhysicsMagnetic circular dichroismPhysics::OpticsCondensed Matter PhysicsElectronic Optical and Magnetic MaterialsCondensed Matter::Materials ScienceX-ray magnetic circular dichroismTwo-photon excitation microscopyCondensed Matter::SuperconductivityVibrational circular dichroismPerpendicularDominance (ecology)Work functionAtomic physicsExcitationPhysical Review B
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