Spin wave excitations in the pyrovanadate α-Cu                         2                         V                         2                         O                         7

A. Banerjee; J. Sannigrahi; S. Bhowal; I. Dasgupta; S. Majumdar; H. C. Walker; A. Bhattacharyya; D. T. Adroja

doi:10.1103/PhysRevB.94.144426

Spin wave excitations in the pyrovanadate α-Cu ₂ V ₂ O ₇

A. Banerjee, J. Sannigrahi, S. Bhowal, I. Dasgupta, S. Majumdar, H. C. Walker, A. Bhattacharyya, D. T. Adroja

Physics

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

11 Citations (Scopus)

Abstract

The pyrovanadate α-Cu ₂ V ₂ O ₇ belongs to the orthorhombic (Fdd2) class of crystals with noncentrosymmetric crystal structure. Recently, the compound has been identified to be a magnetic multiferroic with a substantial electric polarization below the magnetic transition temperature TC = 35 K. Here we report the results of our inelastic neutron-scattering (INS) studies on a polycrystalline sample of α-Cu ₂ V ₂ O ₇ . Our INS data clearly show the existence of dispersive spin wave excitations below TC with a zone-boundary energy of 11 meV at 5 K. We have analyzed the data using linear spin wave theory, which shows good agreement between the experiment and calculation. The analysis is consistent with the third-nearest-neighbor exchange interaction playing a dominant role in the magnetism of the material.

Original language	English
Article number	144426
Journal	Physical Review B
Volume	94
Issue number	14
DOIs	https://doi.org/10.1103/PhysRevB.94.144426
Publication status	Published - 20 Oct 2016

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1103/PhysRevB.94.144426

Cite this

Banerjee, A., Sannigrahi, J., Bhowal, S., Dasgupta, I., Majumdar, S., Walker, H. C., Bhattacharyya, A., & Adroja, D. T. (2016). Spin wave excitations in the pyrovanadate α-Cu ₂ V ₂ O ₇ Physical Review B, 94(14), Article 144426. https://doi.org/10.1103/PhysRevB.94.144426

@article{4b03b8d5bcbe439494897c17354f20f7,

title = " Spin wave excitations in the pyrovanadate α-Cu 2 V 2 O 7 ",

abstract = " The pyrovanadate α-Cu 2 V 2 O 7 belongs to the orthorhombic (Fdd2) class of crystals with noncentrosymmetric crystal structure. Recently, the compound has been identified to be a magnetic multiferroic with a substantial electric polarization below the magnetic transition temperature TC = 35 K. Here we report the results of our inelastic neutron-scattering (INS) studies on a polycrystalline sample of α-Cu 2 V 2 O 7 . Our INS data clearly show the existence of dispersive spin wave excitations below TC with a zone-boundary energy of 11 meV at 5 K. We have analyzed the data using linear spin wave theory, which shows good agreement between the experiment and calculation. The analysis is consistent with the third-nearest-neighbor exchange interaction playing a dominant role in the magnetism of the material.",

author = "A. Banerjee and J. Sannigrahi and S. Bhowal and I. Dasgupta and S. Majumdar and Walker, {H. C.} and A. Bhattacharyya and Adroja, {D. T.}",

note = "Publisher Copyright: {\textcopyright} 2016 American Physical Society.",

year = "2016",

month = oct,

day = "20",

doi = "10.1103/PhysRevB.94.144426",

language = "English",

volume = "94",

journal = "Physical Review B",

issn = "2469-9950",

publisher = "American Physical Society",

number = "14",

}

Banerjee, A, Sannigrahi, J, Bhowal, S, Dasgupta, I, Majumdar, S, Walker, HC, Bhattacharyya, A & Adroja, DT 2016, ' Spin wave excitations in the pyrovanadate α-Cu ₂ V ₂ O ₇ ', Physical Review B, vol. 94, no. 14, 144426. https://doi.org/10.1103/PhysRevB.94.144426

Spin wave excitations in the pyrovanadate α-Cu ₂ V ₂ O ₇ . / Banerjee, A.; Sannigrahi, J.; Bhowal, S. et al.
In: Physical Review B, Vol. 94, No. 14, 144426, 20.10.2016.

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

TY - JOUR

T1 - Spin wave excitations in the pyrovanadate α-Cu 2 V 2 O 7

AU - Banerjee, A.

AU - Sannigrahi, J.

AU - Bhowal, S.

AU - Dasgupta, I.

AU - Majumdar, S.

AU - Walker, H. C.

AU - Bhattacharyya, A.

AU - Adroja, D. T.

PY - 2016/10/20

Y1 - 2016/10/20

N2 - The pyrovanadate α-Cu 2 V 2 O 7 belongs to the orthorhombic (Fdd2) class of crystals with noncentrosymmetric crystal structure. Recently, the compound has been identified to be a magnetic multiferroic with a substantial electric polarization below the magnetic transition temperature TC = 35 K. Here we report the results of our inelastic neutron-scattering (INS) studies on a polycrystalline sample of α-Cu 2 V 2 O 7 . Our INS data clearly show the existence of dispersive spin wave excitations below TC with a zone-boundary energy of 11 meV at 5 K. We have analyzed the data using linear spin wave theory, which shows good agreement between the experiment and calculation. The analysis is consistent with the third-nearest-neighbor exchange interaction playing a dominant role in the magnetism of the material.

AB - The pyrovanadate α-Cu 2 V 2 O 7 belongs to the orthorhombic (Fdd2) class of crystals with noncentrosymmetric crystal structure. Recently, the compound has been identified to be a magnetic multiferroic with a substantial electric polarization below the magnetic transition temperature TC = 35 K. Here we report the results of our inelastic neutron-scattering (INS) studies on a polycrystalline sample of α-Cu 2 V 2 O 7 . Our INS data clearly show the existence of dispersive spin wave excitations below TC with a zone-boundary energy of 11 meV at 5 K. We have analyzed the data using linear spin wave theory, which shows good agreement between the experiment and calculation. The analysis is consistent with the third-nearest-neighbor exchange interaction playing a dominant role in the magnetism of the material.

UR - http://www.scopus.com/inward/record.url?scp=84992013427&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.94.144426

DO - 10.1103/PhysRevB.94.144426

M3 - Article

AN - SCOPUS:84992013427

SN - 2469-9950

VL - 94

JO - Physical Review B

JF - Physical Review B

IS - 14

M1 - 144426

ER -

Banerjee A, Sannigrahi J, Bhowal S, Dasgupta I, Majumdar S, Walker HC et al. Spin wave excitations in the pyrovanadate α-Cu ₂ V ₂ O ₇ Physical Review B. 2016 Oct 20;94(14):144426. doi: 10.1103/PhysRevB.94.144426

Spin wave excitations in the pyrovanadate α-Cu ₂ V ₂ O ₇

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this