Non-Classical Longitudinal Magneto-Resistance in Anisotropic Black Phosphorus
| Autor: | Telesio, Francesca, Hemsworth, Nicholas, Dickerson, William, Petrescu, Matei, Tayari, Vahid, Yu, Oulin, Graf, David, Serrano-Ruiz, Manuel, Caporali, Maria, Peruzzini, Maurizio, Carrega, Matteo, Szkopek, Thomas, Heun, Stefan, Gervais, Guillaume |
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| Rok vydání: | 2018 |
| Předmět: | |
| Zdroj: | Phys. Status Solidi RRL 14 (2020) 1900347 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1002/pssr.201900347 |
| Popis: | Resistivity measurements of a few-layer black phosphorus (bP) crystal in parallel magnetic fields up to 45 T are reported as a function of the angle between the in-plane field and the source-drain (S-D) axis of the device. The crystallographic directions of the bP crystal were determined by Raman spectroscopy, with the zigzag axis found within 5{\deg} of the S-D axis, and the armchair axis in the orthogonal planar direction. A transverse magneto-resistance (TMR) as well as a classically-forbidden longitudinal magneto-resistance (LMR) are observed. Both are found to be strongly anisotropic and non-monotonic with increasing in-plane field. Surprisingly, the relative magnitude (in %) of the positive LMR is larger than the TMR above $\sim$32 T. Considering the known anisotropy of bP whose zigzag and armchair effective masses differ by a factor of approximately seven, our experiment strongly suggests this LMR to be a consequence of the anisotropic Fermi surface of bP. Comment: 12 pages, 8 figures |
| Databáze: | arXiv |
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