Magnetotransport in Sr3PbO antiperovskite

S. Suetsugu; K. Hayama; A. W. Rost; J. Nuss; C. Muehle; J. Kim; K. Kitagawa; Hidenori Takagi

doi:10.1103/PhysRevB.98.115203

Magnetotransport in Sr₃PbO antiperovskite

S. Suetsugu^*, K. Hayama, A. W. Rost, J. Nuss, C. Muehle, J. Kim, K. Kitagawa, Hidenori Takagi

^*Corresponding author for this work

School of Physics and Astronomy

Research output: Contribution to journal › Article › peer-review

Abstract

Novel topological phenomena are anticipated for three-dimensional (3D) Dirac electrons. The magnetotransport properties of cubic Sr3PbO antiperovskite, theoretically proposed to be a 3D massive Dirac electron system, are studied. The measurements of Shubnikov–de Haas oscillations and Hall resistivity indicate the presence of a low density (∼1×1018cm−3) of holes with an extremely small cyclotron mass of 0.01–0.06me. The magnetoresistance Δρxx(B) is linear in magnetic field B with the magnitude independent of temperature. These results are fully consistent with the presence of 3D massive Dirac electrons in Sr3PbO. The chemical flexibility of the antiperovskites and our findings in the family member Sr3PbO point to their potential as a model system in which to explore exotic topological phases.

Original language	English
Article number	115203
Number of pages	6
Journal	Physical Review B
Volume	98
Issue number	11
DOIs	https://doi.org/10.1103/PhysRevB.98.115203
Publication status	Published - 18 Sept 2018

Keywords

TOPOLOGICAL DIRAC SEMIMETAL
NEGATIVE MAGNETORESISTANCE
BERRYS PHASE
CD3AS2
METAL
GRAPHENE
FERMIONS
STATES

Access to Document

10.1103/PhysRevB.98.115203

https://arxiv.org/abs/1807.08006

Cite this

@article{1037f17f41914553801a064b950edbde,

title = "Magnetotransport in Sr3PbO antiperovskite",

abstract = "Novel topological phenomena are anticipated for three-dimensional (3D) Dirac electrons. The magnetotransport properties of cubic Sr3PbO antiperovskite, theoretically proposed to be a 3D massive Dirac electron system, are studied. The measurements of Shubnikov–de Haas oscillations and Hall resistivity indicate the presence of a low density (∼1×1018cm−3) of holes with an extremely small cyclotron mass of 0.01–0.06me. The magnetoresistance Δρxx(B) is linear in magnetic field B with the magnitude independent of temperature. These results are fully consistent with the presence of 3D massive Dirac electrons in Sr3PbO. The chemical flexibility of the antiperovskites and our findings in the family member Sr3PbO point to their potential as a model system in which to explore exotic topological phases.",

keywords = "TOPOLOGICAL DIRAC SEMIMETAL, NEGATIVE MAGNETORESISTANCE, BERRYS PHASE, CD3AS2, METAL, GRAPHENE, FERMIONS, STATES",

author = "S. Suetsugu and K. Hayama and Rost, {A. W.} and J. Nuss and C. Muehle and J. Kim and K. Kitagawa and Hidenori Takagi",

year = "2018",

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doi = "10.1103/PhysRevB.98.115203",

language = "English",

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T1 - Magnetotransport in Sr3PbO antiperovskite

AU - Suetsugu, S.

AU - Hayama, K.

AU - Rost, A. W.

AU - Nuss, J.

AU - Muehle, C.

AU - Kim, J.

AU - Kitagawa, K.

AU - Takagi, Hidenori

PY - 2018/9/18

Y1 - 2018/9/18

N2 - Novel topological phenomena are anticipated for three-dimensional (3D) Dirac electrons. The magnetotransport properties of cubic Sr3PbO antiperovskite, theoretically proposed to be a 3D massive Dirac electron system, are studied. The measurements of Shubnikov–de Haas oscillations and Hall resistivity indicate the presence of a low density (∼1×1018cm−3) of holes with an extremely small cyclotron mass of 0.01–0.06me. The magnetoresistance Δρxx(B) is linear in magnetic field B with the magnitude independent of temperature. These results are fully consistent with the presence of 3D massive Dirac electrons in Sr3PbO. The chemical flexibility of the antiperovskites and our findings in the family member Sr3PbO point to their potential as a model system in which to explore exotic topological phases.

AB - Novel topological phenomena are anticipated for three-dimensional (3D) Dirac electrons. The magnetotransport properties of cubic Sr3PbO antiperovskite, theoretically proposed to be a 3D massive Dirac electron system, are studied. The measurements of Shubnikov–de Haas oscillations and Hall resistivity indicate the presence of a low density (∼1×1018cm−3) of holes with an extremely small cyclotron mass of 0.01–0.06me. The magnetoresistance Δρxx(B) is linear in magnetic field B with the magnitude independent of temperature. These results are fully consistent with the presence of 3D massive Dirac electrons in Sr3PbO. The chemical flexibility of the antiperovskites and our findings in the family member Sr3PbO point to their potential as a model system in which to explore exotic topological phases.

KW - TOPOLOGICAL DIRAC SEMIMETAL

KW - NEGATIVE MAGNETORESISTANCE

KW - BERRYS PHASE

KW - CD3AS2

KW - METAL

KW - GRAPHENE

KW - FERMIONS

KW - STATES

U2 - 10.1103/PhysRevB.98.115203

DO - 10.1103/PhysRevB.98.115203

M3 - Article

SN - 2469-9950

VL - 98

JO - Physical Review B

JF - Physical Review B

IS - 11

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