Magnon gap tuning in lithium-doped MnTe

George Yumnam; Duncan H. Moseley; Joseph A.M. Paddison; Christiana Z. Suggs; Emma Zappala; David S. Parker; Garrett E. Granroth; Gerald D. Morris; Md Mobarak Hossain Polash; Daryoosh Vashaee; Michael A. McGuire; Huaizhou Zhao; Michael E. Manley; Benjamin A. Frandsen; Raphaël P. Hermann

doi:10.1103/PhysRevB.109.214434

Magnon gap tuning in lithium-doped MnTe

George Yumnam, Duncan H. Moseley, Joseph A.M. Paddison, Christiana Z. Suggs, Emma Zappala, David S. Parker, Garrett E. Granroth, Gerald D. Morris, Md Mobarak Hossain Polash, Daryoosh Vashaee, Michael A. McGuire, Huaizhou Zhao, Michael E. Manley, Benjamin A. Frandsen, Raphaël P. Hermann

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

Abstract

Manganese telluride (MnTe) is a prospective platform for ultrafast carrier dynamics, spin-based thermoelectrics, and magnon-drag transport due to its unique electronic and magnetic properties. We use inelastic neutron scattering to study both pure and lithium-doped MnTe, focusing on the influence of doping in opening a magnon gap. We use neutron powder diffraction to determine critical exponents for the phase transition in both pure and Li-doped MnTe and complement this information with muon spin rotation/relaxation. The opening of the magnon gap and spin reorientation in Li-doped MnTe is mainly due to increased magnetic anisotropy along the [001] axis, a feature not present in pure MnTe.

Original language	English
Article number	214434
Journal	Physical Review B
Volume	109
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevB.109.214434
State	Published - Jun 1 2024

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title = "Magnon gap tuning in lithium-doped MnTe",

abstract = "Manganese telluride (MnTe) is a prospective platform for ultrafast carrier dynamics, spin-based thermoelectrics, and magnon-drag transport due to its unique electronic and magnetic properties. We use inelastic neutron scattering to study both pure and lithium-doped MnTe, focusing on the influence of doping in opening a magnon gap. We use neutron powder diffraction to determine critical exponents for the phase transition in both pure and Li-doped MnTe and complement this information with muon spin rotation/relaxation. The opening of the magnon gap and spin reorientation in Li-doped MnTe is mainly due to increased magnetic anisotropy along the [001] axis, a feature not present in pure MnTe.",

author = "George Yumnam and Moseley, {Duncan H.} and Paddison, {Joseph A.M.} and Suggs, {Christiana Z.} and Emma Zappala and Parker, {David S.} and Granroth, {Garrett E.} and Morris, {Gerald D.} and Polash, {Md Mobarak Hossain} and Daryoosh Vashaee and McGuire, {Michael A.} and Huaizhou Zhao and Manley, {Michael E.} and Frandsen, {Benjamin A.} and Hermann, {Rapha{\"e}l P.}",

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doi = "10.1103/PhysRevB.109.214434",

language = "English",

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T1 - Magnon gap tuning in lithium-doped MnTe

AU - Yumnam, George

AU - Moseley, Duncan H.

AU - Paddison, Joseph A.M.

AU - Suggs, Christiana Z.

AU - Zappala, Emma

AU - Parker, David S.

AU - Granroth, Garrett E.

AU - Morris, Gerald D.

AU - Polash, Md Mobarak Hossain

AU - Vashaee, Daryoosh

AU - McGuire, Michael A.

AU - Zhao, Huaizhou

AU - Manley, Michael E.

AU - Frandsen, Benjamin A.

AU - Hermann, Raphaël P.

PY - 2024/6/1

Y1 - 2024/6/1

N2 - Manganese telluride (MnTe) is a prospective platform for ultrafast carrier dynamics, spin-based thermoelectrics, and magnon-drag transport due to its unique electronic and magnetic properties. We use inelastic neutron scattering to study both pure and lithium-doped MnTe, focusing on the influence of doping in opening a magnon gap. We use neutron powder diffraction to determine critical exponents for the phase transition in both pure and Li-doped MnTe and complement this information with muon spin rotation/relaxation. The opening of the magnon gap and spin reorientation in Li-doped MnTe is mainly due to increased magnetic anisotropy along the [001] axis, a feature not present in pure MnTe.

AB - Manganese telluride (MnTe) is a prospective platform for ultrafast carrier dynamics, spin-based thermoelectrics, and magnon-drag transport due to its unique electronic and magnetic properties. We use inelastic neutron scattering to study both pure and lithium-doped MnTe, focusing on the influence of doping in opening a magnon gap. We use neutron powder diffraction to determine critical exponents for the phase transition in both pure and Li-doped MnTe and complement this information with muon spin rotation/relaxation. The opening of the magnon gap and spin reorientation in Li-doped MnTe is mainly due to increased magnetic anisotropy along the [001] axis, a feature not present in pure MnTe.

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U2 - 10.1103/PhysRevB.109.214434

DO - 10.1103/PhysRevB.109.214434

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VL - 109

JO - Physical Review B

JF - Physical Review B

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ER -

Magnon gap tuning in lithium-doped MnTe

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