Transmission of phase information between electrons and holes in graphene

Autor:	Rahman, Atikur, Guikema, Janice Wynn, Lee, Soo Hyung, Markovic, Nina
Rok vydání:	2013
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Phys. Rev. B 87, 081401(R) (2013)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevB.87.081401
Popis:	We have studied quantum interference between electrons and holes in a split-ring gold interferometer with graphene arms, one of which contained a pn junction. The carrier type, the pn junction and the phase of the oscillations in a magnetic field were controlled by a top gate placed over one of the arms. We observe clear Aharonov-Bohm oscillations at the Dirac point and away from it, regardless of the carrier type in each arm. We also find clear oscillations when one arm of the interferometer contains a single pn junction, allowing us to study the interplay of Aharonov-Bohm effect and Klein tunneling. Comment: 5 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1304.4878 Zobrazit plný text záznamu View this record from Arxiv