TY  - JOUR
AB  - Herein, sputter-deposited ferromagnetic Weyl semimetal (WSM) and full-Heusler compound Co2TiGe is investigated. Crystal quality is analyzed using X-ray diffraction and reflectivity. In addition, temperature-dependent transport and magnetization measurements are carried out. The sample shows indications on the formation of L2(1)crystal structure. Magnetization measurements show a saturation magnetization of 1.98 mu(B)(f.u.)(-1)and 1.45 mu(B)(f.u.)(-1)at 50 and 300 K, respectively. This is in close agreement to the calculated value of 2 mu(B)(f.u.)(-1)at 0 K using the Slater-Pauling rule. The obtained Curie temperature is 378.5 K, which is close to prior results for bulk samples. The residual resistivity of 142.7 mu omega cm is mainly dominated by disorder scattering. At temperatures above 60 K, the Coulomb interaction dominates the resistance. The residual resistance ratio is around 1.49. Hall measurements show positive ordinary Hall and anomalous Hall constants and a positive dependence on temperature. Skew scattering and side jumps or intrinsic mechanisms contribute in similar amounts to the anomalous Hall resistivity, which indicates a higher than usual intrinsic contribution, which is expected for WSMs. The expected relation between the longitudinal and the anomalous Hall conductivity of sigma xyA proportional to sigma xx0is not met.
DA  - 2021
DO  - 10.1002/pssb.202000067
KW  - anomalous Hall effect
KW  - ferromagnetic half-metals
KW  - Heusler compounds
KW  - Weyl semimetals
LA  - eng
IS  - 1
PY  - 2021
SN  - 0370-1972
T2  - Physica status solidi B-Basic solid state phsyics
TI  - Anomalous Hall Effect and Magnetoresistance in Sputter-Deposited Magnetic Weyl Semimetal Co2TiGe Thin Films
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-29451178
Y2  - 2024-11-22T07:34:24
ER  -