000819717 001__ 819717
000819717 005__ 20210302075937.0
000819717 0247_ $$2Handle$$a2128/12517
000819717 0247_ $$2ISSN$$a1866-1807
000819717 020__ $$a978-3-89336-848-8
000819717 037__ $$aFZJ-2016-05318
000819717 041__ $$aGerman
000819717 1001_ $$0P:(DE-Juel1)128798$$aZubkov, Evgeny$$b0$$eCorresponding author$$gmale$$ufzj
000819717 245__ $$aAufbau einer Vierspitzen-Rastertunnelmikroskop/ Rasterelektronikroskop-Kombination und Leitfähigkeitsmessungen an Silizid Nanodrähten$$f2010-01-01 - 2013-12-31
000819717 260__ $$aJülich$$bForschungszentrum Jülich GmbH Zentralbibliothek, Verlag$$c2013
000819717 300__ $$a150 S.
000819717 3367_ $$2DataCite$$aOutput Types/Dissertation
000819717 3367_ $$2ORCID$$aDISSERTATION
000819717 3367_ $$2BibTeX$$aPHDTHESIS
000819717 3367_ $$02$$2EndNote$$aThesis
000819717 3367_ $$0PUB:(DE-HGF)11$$2PUB:(DE-HGF)$$aDissertation / PhD Thesis$$bphd$$mphd$$s1476349259_31322
000819717 3367_ $$2DRIVER$$adoctoralThesis
000819717 4900_ $$aSchriften des Forschungszentrum Jülich. Reihe Schlüsseltechnologien/ Key Technologies$$v55
000819717 502__ $$aRWTH Aachen, Diss., 2013$$bDr.$$cRWTH Aachen$$d2013
000819717 520__ $$aIn this work the combination of a four-tip scanning tunneling microscope with a scanning electron microscope is presented. By means of this apparatus it is possible to perform the conductivity measurements on the in-situ prepared nanostructures in ultra-high vacuum. With the aid of a scanning electron microscope (SEM), it becomes possible to position the tunneling tips of the four-tip scanning tunneling microscope (STM), so that an arrangement for a four-point probe measurement on nanostructures can be obtained. The STM head was built according to the novel coaxial Beetle concept. This concept allows on the one hand, a very compact arrangement of the components of the STM and on the other hand, the new-built STM head has a good mechanical stability, in order to achieve atomic resolution with all four STM units. The atomic resolution of the STM units was confirmed by scanning a Si(111)-7x7 surface. The thermal drift during the STM operation, as well as the resonant frequencies of the mechanical structure of the STM head, were determined. The scanning electron microscope allows the precise and safe navigation of the tunneling tips on the sample surface. Multi tip spectroscopy with up to four STM units can be performed synchronously. To demonstrate the capabilities of the new-built apparatus the conductivity measurements were carried out on metallic yttrium silicide nanowires. The nanowires were prepared by the in-situ deposition of yttrium on a heated Si(110) sample surface. Current-voltage curves were recorded on the nanowires and on the wetting layer in-between. The curves indicate an existence of the Schottky barrier between the yttrium silicide nanowires and the silicon bulk. By means of the two-tip measurements with a gate, the insulating property of the Schottky barrier has been confirmed. Using this Schottky barrier, it is possible to limit the current to the nanowire and to prevent it from flowing through the silicon bulk. A four-tip resistance measurement with a gate has provided the resistance of the nanowire. From the dimensions of the nanowire the resistivity was calculated. The obtained resistivity was found to be in agreement with literature values. In addition, the contact resistances of the tunneling tips on the silicide nanowires were determined.
000819717 536__ $$0G:(DE-HGF)POF3-141$$a141 - Controlling Electron Charge-Based Phenomena (POF3-141)$$cPOF3-141$$fPOF III$$x0
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