Vortex Beams for Atomic Resolution Dichroism

Conference · Sat Jan 01 00:00:00 EST 2011

OSTI ID:1025833

Idrobo Tapia, Juan C ^[1]; Pennycook, Stephen J ^[1]

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1. ORNL

Vortex beams carrying orbital angular momentum have been produced recently with electron microscopy by interfering an incident electron beam with a grid containing dislocations. Here, we present an analytical derivation of vortex wave functions in reciprocal and real space. We outline their mathematical and physical properties and describe the conditions under which vortex beams can be used in scanning transmission microscopy to measure magnetic properties of materials at the atomic scale.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Shared Research Equipment Collaborative Research Center
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1025833
• Resource Relation: Conference: Microscopy & Microanalysis 2011 Meeting, Nashville, TN, USA, 20110807, 20110811
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
DICHROISM
DISLOCATIONS
ELECTRON BEAMS
ELECTRON MICROSCOPY
ELECTRONS
MAGNETIC PROPERTIES
MICROANALYSIS
MICROSCOPY
ORBITAL ANGULAR MOMENTUM
PHYSICAL PROPERTIES
RESOLUTION
WAVE FUNCTIONS
STEM
EELS
diachroism
OAM