SKM 2021 – wissenschaftliches Programm

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HL: Fachverband Halbleiterphysik

HL 25: 2D semiconductors and van der Waals heterostructures II (joint session HL/DS)

HL 25.3: Vortrag

Freitag, 1. Oktober 2021, 14:00–14:15, H4

Transport Properties of Bulk Black Phosphorus Below and Above the Quantum Limit — •Davide Pizzirani¹, Jasper Linnartz¹, Claudius Müller¹, Brian Kiraly², Alexander Khajetoorians², and Steffen Wiedmann¹ — ¹High Field Magnet Laboratory (HFML-EMFL), Radboud University, Nijmegen, Netherlands — ²Institute for Molecules and Materials, Radboud University, Nijmegen, the Netherlands

Black phosphorus (bPh) has emerged as a promising and novel platform for nano-electronic applications due to its in-plane anisotropy and direct band gap that depends on the sample thickness. We present low-temperature magneto-transport experiments on bulk bPh up to 30 T with thicknesses ranging from 40 to 100 μm. A negative magneto-resistance (MR) that turns into a positive linear one is found by increasing the magnetic field. This MR remains quasi-isotropic upon changing the tilt angle from out-of-plane to in-plane with respect to the applied magnetic field. Using samples with different carrier concentrations, we are able to determine the transport properties below and above the quantum limit, and in the regime of variable range hopping.