Pressure tuning of the Berry phase in BaMnSb2

X. Yin; J. Y. Liu; T. Hu; Y. L. Huang; C. Jiang; L. J. Min; P. G. Li; Z. Q. Mao; H. Xiao

doi:10.1103/PhysRevB.105.045123

Pressure tuning of the Berry phase in BaMnSb2

X. Yin, J. Y. Liu, T. Hu, Y. L. Huang, C. Jiang, L. J. Min, P. G. Li, Z. Q. Mao, H. Xiao

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

2 Scopus citations

Abstract

The Sb square net in BaMnSb2 is reported to host nearly massless Dirac fermions. At ambient pressure, BaMnSb2 shows strong Shubnikov-de Haas (SdH) oscillations with a π Berry phase. In this work, we study BaMnSb2 under different pressures. It is found that the frequency of the SdH oscillation remains almost unchanged, hence the cross-section area of the Fermi surface does not change much with pressure. Notably, there is a sudden change in the phase factor of the oscillations around a critical pressure of P= 2.5 GPa, which suggests a possible topological phase transition in BaMnSb2.

Original language	English (US)
Article number	045123
Journal	Physical Review B
Volume	105
Issue number	4
DOIs	https://doi.org/10.1103/PhysRevB.105.045123
State	Published - Jan 15 2022

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1103/PhysRevB.105.045123

Cite this

@article{407e5e2f9c044031a962c3fed1353e0e,

title = "Pressure tuning of the Berry phase in BaMnSb2",

abstract = "The Sb square net in BaMnSb2 is reported to host nearly massless Dirac fermions. At ambient pressure, BaMnSb2 shows strong Shubnikov-de Haas (SdH) oscillations with a π Berry phase. In this work, we study BaMnSb2 under different pressures. It is found that the frequency of the SdH oscillation remains almost unchanged, hence the cross-section area of the Fermi surface does not change much with pressure. Notably, there is a sudden change in the phase factor of the oscillations around a critical pressure of P= 2.5 GPa, which suggests a possible topological phase transition in BaMnSb2.",

author = "X. Yin and Liu, {J. Y.} and T. Hu and Huang, {Y. L.} and C. Jiang and Min, {L. J.} and Li, {P. G.} and Mao, {Z. Q.} and H. Xiao",

note = "Publisher Copyright: {\textcopyright} 2022 American Physical Society.",

year = "2022",

month = jan,

day = "15",

doi = "10.1103/PhysRevB.105.045123",

language = "English (US)",

volume = "105",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

number = "4",

}

TY - JOUR

T1 - Pressure tuning of the Berry phase in BaMnSb2

AU - Yin, X.

AU - Liu, J. Y.

AU - Hu, T.

AU - Huang, Y. L.

AU - Jiang, C.

AU - Min, L. J.

AU - Li, P. G.

AU - Mao, Z. Q.

AU - Xiao, H.

PY - 2022/1/15

Y1 - 2022/1/15

N2 - The Sb square net in BaMnSb2 is reported to host nearly massless Dirac fermions. At ambient pressure, BaMnSb2 shows strong Shubnikov-de Haas (SdH) oscillations with a π Berry phase. In this work, we study BaMnSb2 under different pressures. It is found that the frequency of the SdH oscillation remains almost unchanged, hence the cross-section area of the Fermi surface does not change much with pressure. Notably, there is a sudden change in the phase factor of the oscillations around a critical pressure of P= 2.5 GPa, which suggests a possible topological phase transition in BaMnSb2.

AB - The Sb square net in BaMnSb2 is reported to host nearly massless Dirac fermions. At ambient pressure, BaMnSb2 shows strong Shubnikov-de Haas (SdH) oscillations with a π Berry phase. In this work, we study BaMnSb2 under different pressures. It is found that the frequency of the SdH oscillation remains almost unchanged, hence the cross-section area of the Fermi surface does not change much with pressure. Notably, there is a sudden change in the phase factor of the oscillations around a critical pressure of P= 2.5 GPa, which suggests a possible topological phase transition in BaMnSb2.

UR - http://www.scopus.com/inward/record.url?scp=85123386880&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=85123386880&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.105.045123

DO - 10.1103/PhysRevB.105.045123

M3 - Article

AN - SCOPUS:85123386880

SN - 2469-9950

VL - 105

JO - Physical Review B

JF - Physical Review B

IS - 4

M1 - 045123

ER -

Pressure tuning of the Berry phase in BaMnSb2

Abstract

All Science Journal Classification (ASJC) codes

Access to Document

Other files and links

Fingerprint

Cite this