Publications by Peter Babkevich

Cavity-magnon-polariton spectroscopy of strongly hybridized electro-nuclear spin excitations in LiHoF4

Henrik Moodysson Rønnow, Ivica Zivkovic, Richard Gaal, Peter Babkevich

We first present a formalism that incorporates the input-output formalism and the linear response theory to employ cavity-magnon-polariton coupling as a spectroscopic tool for investigating strongly hybridized electro-nuclear spin excitations. A microscopi ...

Nature Research2024

Structure, Spin Correlations, and Magnetism of the S=1/2 Square-Lattice Antiferromagnet Sr2CuTe1-xWxO6 (0 ≤ x ≤ 1)

Henrik Moodysson Rønnow, Ellen Fogh, Peter Babkevich, Sami Juhani Vasala

Quantum spin liquids are highly entangled magnetic states with exotic properties. The S = 1/2 square-lattice Heisenberg model is one of the foundational models in frustrated magnetism with a predicted, but never observed, quantum spin liquid state. Isostru ...

Amer Chemical Soc2023

Randomness and frustration in a S = (1/)(2) square-lattice Heisenberg antiferromagnet

Henrik Moodysson Rønnow, Bruce Normand, Ellen Fogh, Peter Babkevich

We explore the interplay between randomness and magnetic frustration in the series of S = 12 Heisenberg square-lattice compounds Sr2CuTe1???xWxO6. Substituting W for Te alters the magnetic interactions dramatically, from strongly nearest-neighbor to next-n ...

2022

Spin dynamics in the square-lattice cupola system Ba(TiO)Cu-4(PO4)(4)

Henrik Moodysson Rønnow, Bruce Normand, Luc Testa, Peter Babkevich, Virgile Yves Favre

We report high-resolution single-crystal inelastic neutron scattering measurements on the spin-1/2 antiferromagnet Ba(TiO)Cu-4(PO4)(4). This material is formed from layers of four-site "cupola" structures, oriented alternately upwards and downwards, which ...

AMER PHYSICAL SOC2022

Magnetic Field Induced Quantum Spin Liquid in the Two Coupled Trillium Lattices of K2Ni2(SO4)(3)

Henrik Moodysson Rønnow, Arnaud Magrez, Ivica Zivkovic, Luc Testa, Peter Babkevich, Virgile Yves Favre, Nagabhushan Ganesh Hegde

Quantum spin liquids are exotic states of matter that form when strongly frustrated magnetic interactions induce a highly entangled quantum paramagnet far below the energy scale of the magnetic interactions. Three-dimensional cases are especially challengi ...

AMER PHYSICAL SOC2021

Exchange Interactions Mediated by Nonmagnetic Cations in Double Perovskites

Henrik Moodysson Rønnow, Oleg Yazyev, Peter Babkevich, Vamshi Mohan Katukuri, Sami Juhani Vasala

Establishing the physical mechanism governing exchange interactions is fundamental for exploring exotic phases such as quantum spin liquids in real materials. In this Letter, we address exchange interactions in Sr2CuTexW1-xO6, a series of double perovskite ...

AMER PHYSICAL SOC2020

Singlet state formation and its impact on the magnetic structure in the tetramer system SeCuO3

Henrik Moodysson Rønnow, Arnaud Magrez, Ivica Zivkovic, Helmuth Berger, Krunoslav Prsa, Peter Babkevich

We present an experimental investigation of the magnetic structure in a tetramer system SeCuO3 using neutron powder-diffraction and nuclear resonance techniques. We establish a commensurate antiferromagnetic ordering with a propagation vector k = (0, 0, 1) ...

2018

Peter Babkevich

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Cavity-magnon-polariton spectroscopy of strongly hybridized electro-nuclear spin excitations in LiHoF4

Structure, Spin Correlations, and Magnetism of the S=1/2 Square-Lattice Antiferromagnet Sr2CuTe1-xWxO6 (0 ≤ x ≤ 1)

Randomness and frustration in a S = (1/)(2) square-lattice Heisenberg antiferromagnet

Spin dynamics in the square-lattice cupola system Ba(TiO)Cu-4(PO4)(4)

Magnetic Field Induced Quantum Spin Liquid in the Two Coupled Trillium Lattices of K2Ni2(SO4)(3)

Exchange Interactions Mediated by Nonmagnetic Cations in Double Perovskites

Singlet state formation and its impact on the magnetic structure in the tetramer system SeCuO3

24-spin clusters in the mineral boleite KPb26Ag9Cu24Cl62(OH)(48)

A-cation control of magnetoelectric quadrupole order in A(TiO)Cu-4(PO4)(4) (A = Ba, Sr, and Pb)

Note: Commercial SQUID magnetometer-compatible NMR probe and its application for studying a quantum magnet

Cavity-magnon-polariton spectroscopy of strongly hybridized electro-nuclear spin excitations in LiHoF4

Spin dynamics in the square-lattice cupola system Ba(TiO)Cu-4(PO4)(4)

Magnetic Field Induced Quantum Spin Liquid in the Two Coupled Trillium Lattices of K2Ni2(SO4)(3)

24-spin clusters in the mineral boleite KPb26Ag9Cu24Cl62(OH)(48)

Structure, Spin Correlations, and Magnetism of the S=1/2 Square-Lattice Antiferromagnet Sr2CuTe1-xWxO6 (0 ≤ x ≤ 1)

Randomness and frustration in a S = (1/)(2) square-lattice Heisenberg antiferromagnet

Exchange Interactions Mediated by Nonmagnetic Cations in Double Perovskites

Singlet state formation and its impact on the magnetic structure in the tetramer system SeCuO3

A-cation control of magnetoelectric quadrupole order in A(TiO)Cu-4(PO4)(4) (A = Ba, Sr, and Pb)

Note: Commercial SQUID magnetometer-compatible NMR probe and its application for studying a quantum magnet