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The Anomalous Hall Effect for magnons

Noordam, A.W. (2016) The Anomalous Hall Effect for magnons. Bachelor's Thesis, Physics.

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Abstract

An investigation on magnon transport is done on 100nm thick YIG with platinum wires, ~7nm thick. A comparison is done with 200nm thick YIG for measurements of which the result is already known [1] and the Anomalous Hall Effect for magnons itself is being investigated. The SMR of 100nm thick YIG gives the same magnitude and sign as for 200nm YIG. The local SSE voltage of the second harmonic shows a same sign and magnitude when compared with 200nm YIG. The in plane measurements show the same sign and the first harmonic in plane measurements have a similar magnitude when compared to 200nm thick YIG. The magnitude of the second harmonic in plane measurements is however twice as small. The out of plane measurements show that one of the signals is an artifact from the measurement setup due to the SW model. The hypotheses drawn for the AHE for magnons expect a 2-fold and 3-fold signal should be seen in the second harmonic and first harmonic respectively for out of plane measurements. These signals are however not found, which could be due to the reason that the AHE for magnons is a bulk effect or that the device geometry is not suitable.

Item Type: Thesis (Bachelor's Thesis)
Degree programme: Physics
Thesis type: Bachelor's Thesis
Language: English
Date Deposited: 15 Feb 2018 08:14
Last Modified: 15 Feb 2018 08:14
URI: http://fse.studenttheses.ub.rug.nl/id/eprint/14268

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