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Document Type : Latin Dissertation
Language of Document : English
Record Number : 152057
Doc. No : ET23849
Main Entry : Sebastian Glawion
Title Proper : Efforts towards spin-polarized scanning tunneling microscopy of MnAs thin films on GaAs_RU`QHbaYdHPJUL(egfUOQhNiPMjOQHbaYgk+LN`l[nmo[jLpOlfqr[jHPOs[ ctRU`Wur`l`QTVL_fHCY7HKJULvijLNw
Note : This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract : The available Omicron variable-temperature scanning tunneling microscope (VT-STM) was modifiedin order to enhance its capabilities and include the possibility of spin-polarized measurements. A lock-inamplifier was installed, enabling the researcher to obtain scans of the differential conductance dI/dU, whichallow deduction of the magnetic domain structure. The applicability of ferromagnetic tips made of Co, andof Pt-tips covered by e-beam evaporation with antiferromagnetic Cr thin films was investigated. Those tipswere used to study two different MnAs thin films (40 and 400 nm) previously grown epitaxially onGaAs(001) substrates. The goal was to image the magnetic structure of the ferromagnetic MnAs phasereported from MFM measurements, and to enhance the resolution to the atomic level provided by the STM.It turns out that for several reasons, which are explained in the final section, spin-polarized measurementson existing MnAs films were not successful when using the available devices.,.............-....,....-...,..tested for theQ1 PC1 bus cardBoth these projects mere sofixare des elopment efforts tonards contributing to dlfferentaspects of Roboucs and lZ1echatronics projects m the Controls and Roboucs Group..
Subject : Electericl tess
: برق
electronic file name : TL47110.pdf
Title and statement of responsibility and : Efforts towards spin-polarized scanning tunneling microscopy of MnAs thin films on GaAs_RU`QHbaYdHPJUL(egfUOQhNiPMjOQHbaYgk+LN`l[nmo[jLpOlfqr[jHPOs[ ctRU`Wur`l`QTVL_fHCY7HKJULvijLNw [Thesis]
 
 
 
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