J. Rodriguez-Rivera

activity

20102025

most citedFractionalized excitations in the spin liquid state of a kagomé lattice antiferromagnet

1.2k citations · 3.4k across the 77 of their papers we have counts for

collaborators

74 papers

cond-mat.mtrl-sci2025

Magnetoelastic honeycomb fragmentation in VI $_{3}$

Enlin Shen, Tiberiu I. Popescu, Nishwal Gora +9

The discovery of ordered magnetism in two-dimensional van der Waals materials at the monolayer limit challenges the Mermin-Wagner theorem, which forbids spontaneous breaking of con…

cond-mat.str-el2024★ 1 cited

Magnetic excitations and interactions in the Weyl ferrimagnet NdAlSi

Chris J. Lygouras, Hung-Yu Yang, Xiaohan Yao +9

Weyl fermions can arise from time-reversal symmetry-breaking magnetism, but their impact on magnetic order is a source of ongoing research. Using high-precision neutron diffraction…

cond-mat.str-el2024

Two types of colossal magnetoresistance with distinct mechanisms in Eu5In2As6

Sudhaman Balguri, Mira B. Mahendru, Enrique O. Gonzalez Delgado +8

Recent reports of colossal negative magnetoresistance (CMR) in a few magnetic semimetals and semiconductors have attracted attention, because these materials are devoid of the conv…

cond-mat.str-el2024

Magnetic field tuned superconducting and normal phase magnetism in CeCo $_{0.5}$ Rh $_{0.5}$ In $_{5}$

A. Howell, M. Songvilay, J. A. Rodriguez-Rivera +7

By tuning superconductivity with an applied magnetic field, we use neutrons to compare the magnetic ordered phases in superconducting and normal states of CeCo $_{0.5}$ Rh $_{0.5}$ In$…

cond-mat.mtrl-sci2024

Neutron absorption correction and mean path length calculations for multiple samples with arbitrary shapes -- applications to highly absorbing samples on the Multi-Axis Crystal Spectrometer at NIST

Jose A. Rodriguez-Rivera, Chris Stock

The finite volume algorithm for absorption correction developed by Wunch and Prewitt is examined. This algorithm is based on the numerical integration of the transmission function…

cond-mat.str-el2024

Connection between f-electron correlations and magnetic excitations in UTe2

Thomas Halloran, Peter Czajka, Gicela Saucedo Salas +8

The detailed anisotropy of the low-temperature, low-energy magnetic excitations of the candidate spin-triplet superconductor UTe $_{2}$ is revealed using inelastic neutron scattering.…

cond-mat.str-el2024★ 4 cited

Anisotropic excitonic magnetism from discrete $C_{4}$ symmetry in CeRhIn $_{5}$

D. J. Brener, I. Rodriguez Mallo, H. Lane +6

Anisotropy in strongly correlated materials is a central parameter in determining the electronic ground state and is tuned through the local crystalline electric field. This is not…

cond-mat.str-el2024★ 4 cited

Pulling order back from the brink of disorder: Observation of a nodal line spin liquid and fluctuation stabilized order in K $_{2}$ IrCl $_{6}$

Qiaochu Wang, Alberto de la Torre, Jose A. Rodriguez-Rivera +8

Competing interactions in frustrated magnets can give rise to highly degenerate ground states from which correlated liquid-like states of matter often emerge. The scaling of this d…

cond-mat.str-el2024★ 5 cited

Unraveling the magnetic ground-state in alkali-metal lanthanide oxide Na $_{2}$ PrO $_{3}$

Ifeanyi John Onuorah, Jonathan Frassineti, Qiaochu Wang +8

A comprehensive set of muon spin spectroscopy and neutron scattering measurements supported by ab-initio and model Hamiltonian simulations have been used to investigate the magneti…

cond-mat.str-el2024

Continuum of magnetic excitations in the Kitaev honeycomb iridate D $_{3}$ LiIr $_{2}$ O $_{6}$

Thomas Halloran, Yishu Wang, K. W. Plumb +12

Inelastic neutron scattering (INS) measurements of powder D $_{3} (^{7}$ Li)( $^{193}$ Ir) $_{2}$ O $_{6}$ reveal low energy magnetic excitations with a scattering cross section that is broad in…

cond-mat.str-el2023★ 1 cited

Acoustic lattice instabilities at the magneto-structural transition in Fe $_{1.057 (7)}$ Te

K. Guratinder, E. Chan, E. E. Rodriguez +7

Fe $_{1.057 (7)}$ Te undergoes a first-order tetragonal to monoclinc structural transition at T $_{S} \sim 70$ K, breaking the C $_{4}$ lattice symmetry and simultaneously breaking time…

cond-mat.mtrl-sci2023★ 6 cited

Lattice dynamics and spin excitations in the metal-organic framework [CH $_{3}$ NH $_{3}$ ][Co(HCOO) $_{3}$ ]

Lei Ding, Claire V. Colin, Virginie Simonet +11

In metal-organic-framework (MOF) perovskites, both magnetic and ferroelectric orderings can be readily realized by compounding spin and charge degrees of freedom. The hydrogen bond…

cond-mat.str-el2023★ 4 cited

Neutron scattering sum rules, symmetric exchanges, and helicoidal magnetism in MnSb $_{2}$ O $_{6}$

E. Chan, H. Lane, J. Pásztorová +9

MnSb $_{2}$ O $_{6}$ is based on the noncentrosymmetric $P 321$ space group with magnetic Mn $^{2 +}$ ( $S = 5/2$ , $L \approx 0$ ) spins ordering below $T_{N} = 12$ K in a helicoidal…

cond-mat.str-el2023★ 1 cited

Spin-orbital order and excitons in magnetoresistive HoBi

J. Gaudet, H. -Y. Yang, E. M. Smith +11

The magnetism of the rock-salt $f cc$ rare-earth monopnictide HoBi, a candidate topological material with extreme magnetoresistance, is investigated. From the Ho $^{3 +}$ non-Kramers…

cond-mat.mtrl-sci2022★ 3 cited

Fast broadband cluster spin-glass dynamics in PbFe $_{1/2}$ Nb $_{1/2}$ O $_{3}$

C. Stock, B. Roessli, P. M. Gehring +11

PbFe $_{1/2}$ Nb $_{1/2}$ O $_{3}$ (PFN) is a relaxor ferroelectric (T $_{c}$ $\sim$ 400 K) consisting of disordered magnetic Fe $^{3 +}$ (S= $\frac{5}{2}$ , L $\approx$ 0) ions resulting in a l…

cond-mat.str-el2022★ 1 cited

Spin dynamics in the square-lattice cupola system Ba(TiO)Cu $_{4}$ (PO $_{4}$ ) $_{4}$

Luc Testa, Peter Babkevich, Yasuyuki Kato +9

We report high-resolution single-crystal inelastic neutron scattering measurements on the spin-1/2 antiferromagnet Ba(TiO)Cu $_{4}$ (PO $_{4}$ ) $_{4}$ . This material is formed from layers of…

cond-mat.str-el2021★ 40 cited

Symmetry of magnetic correlations in spin-triplet superconductor UTe2

Nicholas P. Butch, Sheng Ran, Shanta R. Saha +6

The temperature dependence of the low-energy magnetic excitations in the spin-triplet superconductor UTe $_{2}$ was measured via inelastic neutron scattering in the normal and superco…

cond-mat.mtrl-sci2021★ 14 cited

Relating spin-polarized STM imaging and inelastic neutron scattering in the van-der-Waals ferromagnet Fe3GeTe2

Christopher Trainer, Olivia R. Armitage, Harry Lane +7

Van-der-Waals (vdW) ferromagnets have enabled the development of heterostructures assembled from exfoliated monolayers with spintronics functionalities, making it important to unde…

cond-mat.str-el2021★ 4 cited

Spin dynamics in the skyrmion-host lacunar spinel GaV4S8

G. Pokharel, H. Suriya Arachchige, S. Gao +10

In the lacunar spinel GaV4S8, the interplay of spin, charge, and orbital degrees of freedom produces a rich phase diagram that includes an unusual Neel-type skyrmion phase composed…

cond-mat.str-el2021★ 13 cited

Metastable antiphase boundary ordering in CaFe $_{2}$ O $_{4}$

H. Lane, E. E. Rodriguez, H. C. Walker +11

CaFe $_{2}$ O $_{4}$ is an $S = 5/2$ antiferromagnet exhibiting two magnetic orders which shows regions of coexistence at some temperatures. Using a Green's function formalism, we model…

cond-mat.str-el2021★ 18 cited

Two-dimensional ferromagnetic spin-orbital excitations in the honeycomb VI $_{3}$

H. Lane, E. Pachoud, J. A. Rodriguez-Rivera +6

VI $_{3}$ is a ferromagnet with planar honeycomb sheets of bonded V $^{3 +}$ ions held together by van der Waals forces. We apply neutron spectroscopy to measure the two dimensional (…

cond-mat.str-el2021★ 9 cited

From one- to two-magnon excitations in the S=3/2 magnet $β$ -CaCr $_{2}$ O $_{4}$

M. Songvilay, S. Petit, F. Damay +7

We apply neutron spectroscopy to measure the magnetic dynamics in the S=3/2 magnet $β$ -CaCr $_{2}$ O $_{4}$ (T $_{N}$ =21 K). The low-energy fluctuations, in the ordered state, resemble large…

cond-mat.str-el2021★ 149 cited

Kitaev interactions in the Co honeycomb antiferromagnets Na $_{3}$ Co $_{2}$ SbO $_{6}$ and Na $_{2}$ Co $_{2}$ TeO $_{6}$

M. Songvilay, J. Robert, S. Petit +10

Co $^{2 +}$ ions in an octahedral crystal field, stabilise a j $_{e f f}$ = 1/2 ground state with an orbital degree of freedom and have been recently put forward for realising Kitaev in…

cond-mat.str-el2020★ 19 cited

Decay and renormalization of a longitudinal mode in a quasi-two-dimensional antiferromagnet

Seung-Hwan Do, Hao Zhang, Travis J. Williams +8

An ongoing challenge in the study of quantum materials, is to reveal and explain collective quantum effects in spin systems where interactions between different modes types are imp…

Magnetoelastic honeycomb fragmentation in VI3​

Magnetic excitations and interactions in the Weyl ferrimagnet NdAlSi

Two types of colossal magnetoresistance with distinct mechanisms in Eu5In2As6

Magnetic field tuned superconducting and normal phase magnetism in CeCo0.5​Rh0.5​In5​

Neutron absorption correction and mean path length calculations for multiple samples with arbitrary shapes -- applications to highly absorbing samples on the Multi-Axis Crystal Spectrometer at NIST

Connection between f-electron correlations and magnetic excitations in UTe2

Anisotropic excitonic magnetism from discrete C4​ symmetry in CeRhIn5​

Pulling order back from the brink of disorder: Observation of a nodal line spin liquid and fluctuation stabilized order in K2​IrCl6​

Unraveling the magnetic ground-state in alkali-metal lanthanide oxide Na2​PrO3​

Continuum of magnetic excitations in the Kitaev honeycomb iridate D3​LiIr2​O6​

Acoustic lattice instabilities at the magneto-structural transition in Fe1.057(7)​Te

Lattice dynamics and spin excitations in the metal-organic framework [CH3​NH3​][Co(HCOO)3​]

Neutron scattering sum rules, symmetric exchanges, and helicoidal magnetism in MnSb2​O6​

Spin-orbital order and excitons in magnetoresistive HoBi

Fast broadband cluster spin-glass dynamics in PbFe1/2​Nb1/2​O3​

Spin dynamics in the square-lattice cupola system Ba(TiO)Cu4​(PO4​)4​

Symmetry of magnetic correlations in spin-triplet superconductor UTe2

Relating spin-polarized STM imaging and inelastic neutron scattering in the van-der-Waals ferromagnet Fe3GeTe2

Spin dynamics in the skyrmion-host lacunar spinel GaV4S8

Metastable antiphase boundary ordering in CaFe2​O4​

Two-dimensional ferromagnetic spin-orbital excitations in the honeycomb VI3​

From one- to two-magnon excitations in the S=3/2 magnet β-CaCr2​O4​

Kitaev interactions in the Co honeycomb antiferromagnets Na3​Co2​SbO6​ and Na2​Co2​TeO6​

Decay and renormalization of a longitudinal mode in a quasi-two-dimensional antiferromagnet

Magnetoelastic honeycomb fragmentation in VI $_{3}$

Magnetic field tuned superconducting and normal phase magnetism in CeCo $_{0.5}$ Rh $_{0.5}$ In $_{5}$

Anisotropic excitonic magnetism from discrete $C_{4}$ symmetry in CeRhIn $_{5}$

Pulling order back from the brink of disorder: Observation of a nodal line spin liquid and fluctuation stabilized order in K $_{2}$ IrCl $_{6}$

Unraveling the magnetic ground-state in alkali-metal lanthanide oxide Na $_{2}$ PrO $_{3}$

Continuum of magnetic excitations in the Kitaev honeycomb iridate D $_{3}$ LiIr $_{2}$ O $_{6}$

Acoustic lattice instabilities at the magneto-structural transition in Fe $_{1.057 (7)}$ Te

Lattice dynamics and spin excitations in the metal-organic framework [CH $_{3}$ NH $_{3}$ ][Co(HCOO) $_{3}$ ]

Neutron scattering sum rules, symmetric exchanges, and helicoidal magnetism in MnSb $_{2}$ O $_{6}$

Fast broadband cluster spin-glass dynamics in PbFe $_{1/2}$ Nb $_{1/2}$ O $_{3}$

Spin dynamics in the square-lattice cupola system Ba(TiO)Cu $_{4}$ (PO $_{4}$ ) $_{4}$

Metastable antiphase boundary ordering in CaFe $_{2}$ O $_{4}$

Two-dimensional ferromagnetic spin-orbital excitations in the honeycomb VI $_{3}$

From one- to two-magnon excitations in the S=3/2 magnet $β$ -CaCr $_{2}$ O $_{4}$

Kitaev interactions in the Co honeycomb antiferromagnets Na $_{3}$ Co $_{2}$ SbO $_{6}$ and Na $_{2}$ Co $_{2}$ TeO $_{6}$