TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhysProc.11.020
TI  - Composition dependence of the specific heat of FeSi
PY  - 2023/06/06
UR  - https://scipost.org/SciPostPhysProc.11.020
JF  - SciPost Physics Proceedings
JA  - SciPost Phys. Proc.
VL  - 
IS  - 11
SP  - 020
A1  - Burger, Carolina
AU  - Bauer, Andreas
AU  - Pfleiderer, Christian
AB  - Recently, a high-mobility surface conduction channel and in-gap states were identified in the correlated small-gap semiconductor FeSi using electrical transport measurements and high-resolution tunneling spectroscopy. The mobility of the charge carriers in the surface channel is quantitatively reminiscent of topological insulators, but displays a lack of sensitivity to the presence of ferromagnetic impurities as studied by means of a series of single crystals with slightly different starting compositions. Here, we report measurements of the specific heat of these crystals. At low temperatures, a shallow maximum is observed in the specific heat divided by temperature. This maximum is suppressed under magnetic field, characteristic of a Schottky anomaly associated with magnetic impurities. In comparison, the height of this maximum decreases with increasing initial iron content.
ER  -

@Article{10.21468/SciPostPhysProc.11.020,
	title={{Composition dependence of the specific heat of FeSi}},
	author={Carolina Burger and Andreas Bauer and Christian Pfleiderer},
	journal={SciPost Phys. Proc.},
	pages={020},
	year={2023},
	publisher={SciPost},
	doi={10.21468/SciPostPhysProc.11.020},
	url={https://scipost.org/10.21468/SciPostPhysProc.11.020},
}