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Title: Gate tuneable beamsplitter in ballistic graphene

Abstract

We present a beam splitter in a suspended, ballistic, multiterminal, bilayer graphene device. By using local bottomgates, a p-n interface tilted with respect to the current direction can be formed. We show that the p-n interface acts as a semi-transparent mirror in the bipolar regime and that the reflectance and transmittance of the p-n interface can be tuned by the gate voltages. Moreover, by studying the conductance features appearing in magnetic field, we demonstrate that the position of the p-n interface can be moved by 1 μm. The herein presented beamsplitter device can form the basis of electron-optic interferometers in graphene.

Authors:
; ;  [1]; ;  [2]
  1. Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel (Switzerland)
  2. Institut für Theoretische Physik, Universität Regensburg, D-93040 Regensburg (Germany)
Publication Date:
OSTI Identifier:
22486265
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 107; Journal Issue: 25; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; BEAMS; ELECTRIC POTENTIAL; GRAPHENE; INTERFACES; INTERFEROMETERS; LAYERS; MAGNETIC FIELDS; MIRRORS

Citation Formats

Rickhaus, Peter, Makk, Péter, Schönenberger, Christian, Liu, Ming-Hao, and Richter, Klaus. Gate tuneable beamsplitter in ballistic graphene. United States: N. p., 2015. Web. doi:10.1063/1.4938073.
Rickhaus, Peter, Makk, Péter, Schönenberger, Christian, Liu, Ming-Hao, & Richter, Klaus. Gate tuneable beamsplitter in ballistic graphene. United States. https://doi.org/10.1063/1.4938073
Rickhaus, Peter, Makk, Péter, Schönenberger, Christian, Liu, Ming-Hao, and Richter, Klaus. 2015. "Gate tuneable beamsplitter in ballistic graphene". United States. https://doi.org/10.1063/1.4938073.
@article{osti_22486265,
title = {Gate tuneable beamsplitter in ballistic graphene},
author = {Rickhaus, Peter and Makk, Péter and Schönenberger, Christian and Liu, Ming-Hao and Richter, Klaus},
abstractNote = {We present a beam splitter in a suspended, ballistic, multiterminal, bilayer graphene device. By using local bottomgates, a p-n interface tilted with respect to the current direction can be formed. We show that the p-n interface acts as a semi-transparent mirror in the bipolar regime and that the reflectance and transmittance of the p-n interface can be tuned by the gate voltages. Moreover, by studying the conductance features appearing in magnetic field, we demonstrate that the position of the p-n interface can be moved by 1 μm. The herein presented beamsplitter device can form the basis of electron-optic interferometers in graphene.},
doi = {10.1063/1.4938073},
url = {https://www.osti.gov/biblio/22486265}, journal = {Applied Physics Letters},
issn = {0003-6951},
number = 25,
volume = 107,
place = {United States},
year = {Mon Dec 21 00:00:00 EST 2015},
month = {Mon Dec 21 00:00:00 EST 2015}
}