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Title: Record-Breaking Magnetoresistance at the Edge of a Microflake of Natural Graphite

Abstract

Placing several electrodes at the edge of a micrometer-size Sri Lankan natural graphite sample at distances comparable to the size of the internal crystalline regions, we found record values for the change of the resistance with magnetic field. At low temperatures and at B ~ 21 T the magnetoresistance (MR) reaches ≈ 107%. The MR values exceed by far all earlier reported ones for graphite and they are comparable or even larger (at T > 50 K) than the largest reported in solids including the Weyl semimetals. The origin of this large MR lies in the existence of highly conducting 2D interfaces aligned parallel to the graphene planes.

Authors:
 [1];  [1];  [1];  [1];  [2]; ORCiD logo [2];  [3];  [3]
  1. Univ. of Leipzig (Germany). Felix Bloch Institute, Div. of Superconductivity and Magnetism
  2. Los Alamos National Lab. (LANL), Los Alamos, NM (United States). National High Magnetic Field Lab. (MagLab), Pulsed Field Facility
  3. Univ. of Leipzig (Germany). Felix Bloch Institute, Semiconductor Physics Group
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE Office of Science (SC). Basic Energy Sciences (BES) (SC-22)
OSTI Identifier:
1660594
Report Number(s):
LA-UR-19-25219
Journal ID: ISSN 1438-1656
Grant/Contract Number:  
89233218CNA000001
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Engineering Materials
Additional Journal Information:
Journal Volume: 21; Journal Issue: 12; Journal ID: ISSN 1438-1656
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; Natural Graphite; Internal Interfaces; Magnetoresistance; High Magnetic Field

Citation Formats

Precker, Christian E., Barzola-Quiquia, José, Esquinazi, Pablo D., Stiller, Markus, Chan, Mun K., Jaime, Marcelo, Zhang, Zhipeng, and Grundmann, Marius. Record-Breaking Magnetoresistance at the Edge of a Microflake of Natural Graphite. United States: N. p., 2019. Web. https://doi.org/10.1002/adem.201900991.
Precker, Christian E., Barzola-Quiquia, José, Esquinazi, Pablo D., Stiller, Markus, Chan, Mun K., Jaime, Marcelo, Zhang, Zhipeng, & Grundmann, Marius. Record-Breaking Magnetoresistance at the Edge of a Microflake of Natural Graphite. United States. https://doi.org/10.1002/adem.201900991
Precker, Christian E., Barzola-Quiquia, José, Esquinazi, Pablo D., Stiller, Markus, Chan, Mun K., Jaime, Marcelo, Zhang, Zhipeng, and Grundmann, Marius. Mon . "Record-Breaking Magnetoresistance at the Edge of a Microflake of Natural Graphite". United States. https://doi.org/10.1002/adem.201900991. https://www.osti.gov/servlets/purl/1660594.
@article{osti_1660594,
title = {Record-Breaking Magnetoresistance at the Edge of a Microflake of Natural Graphite},
author = {Precker, Christian E. and Barzola-Quiquia, José and Esquinazi, Pablo D. and Stiller, Markus and Chan, Mun K. and Jaime, Marcelo and Zhang, Zhipeng and Grundmann, Marius},
abstractNote = {Placing several electrodes at the edge of a micrometer-size Sri Lankan natural graphite sample at distances comparable to the size of the internal crystalline regions, we found record values for the change of the resistance with magnetic field. At low temperatures and at B ~ 21 T the magnetoresistance (MR) reaches ≈ 107%. The MR values exceed by far all earlier reported ones for graphite and they are comparable or even larger (at T > 50 K) than the largest reported in solids including the Weyl semimetals. The origin of this large MR lies in the existence of highly conducting 2D interfaces aligned parallel to the graphene planes.},
doi = {10.1002/adem.201900991},
journal = {Advanced Engineering Materials},
number = 12,
volume = 21,
place = {United States},
year = {2019},
month = {11}
}

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