TY - JOUR
T1 - Local characterization and engineering of proximitized correlated states in graphene/NbSe2 vertical heterostructures
AU - Zhang, Zhiming
AU - Watanabe, Kenji
AU - Taniguchi, Takashi
AU - Leroy, Brian J.
N1 - Funding Information:
The work at the University of Arizona was supported by the National Science Foundation under grant DMR-1708406 and the Army Research Office under Grant No. W911NF-18-1-0420. K.W. and T.T. acknowledge support from the Element Strategy Initiative conducted by the MEXT, Japan, Grant No. JPMXP0112101001, JSPS KAKENHI Grant Nos. JP20H00354 and the CREST (JPMJCR15F3), JST.
Publisher Copyright:
© 2020 American Physical Society.
PY - 2020/8/15
Y1 - 2020/8/15
N2 - Using a van der Waals (vdW) vertical heterostructure consisting of monolayer graphene, monolayer hBN and NbSe2, we have performed local characterization of induced correlated states in different configurations. At a temperature of 4.6 K, we have shown that both superconductivity and charge density waves can be induced in graphene from NbSe2 by proximity effects. By applying a vertical magnetic field, we imaged the Abrikosov vortex lattice and extracted the coherence length for the proximitized superconducting graphene. We further show that the induced correlated states can be completely blocked by adding a monolayer hBN between the graphene and the NbSe2, which demonstrates the importance of the tunnel barrier and surface conditions between the normal metal and superconductor for the proximity effect.
AB - Using a van der Waals (vdW) vertical heterostructure consisting of monolayer graphene, monolayer hBN and NbSe2, we have performed local characterization of induced correlated states in different configurations. At a temperature of 4.6 K, we have shown that both superconductivity and charge density waves can be induced in graphene from NbSe2 by proximity effects. By applying a vertical magnetic field, we imaged the Abrikosov vortex lattice and extracted the coherence length for the proximitized superconducting graphene. We further show that the induced correlated states can be completely blocked by adding a monolayer hBN between the graphene and the NbSe2, which demonstrates the importance of the tunnel barrier and surface conditions between the normal metal and superconductor for the proximity effect.
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U2 - 10.1103/PhysRevB.102.085429
DO - 10.1103/PhysRevB.102.085429
M3 - Article
AN - SCOPUS:85096172564
VL - 102
JO - Physical Review B-Condensed Matter
JF - Physical Review B-Condensed Matter
SN - 0163-1829
IS - 8
M1 - 085429
ER -