A. Piovano

activity

20122023

most citedAntiferromagnetic correlations in the metallic strongly correlated transition metal oxide LaNiO

_{3}

164 citations · 523 across the 21 of their papers we have counts for

collaborators

21 papers

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.mtrl-sci2023★ 11 cited

Anharmonicity of the antiferrodistortive soft mode in barium zirconate BaZrO $_{3}$

Petter Rosander, Erik Fransson, Cosme Milesi-Brault +6

Barium zirconate (BaZrO $_{3}$ ) is one of the very few perovskites that is claimed to retain an average cubic structure down to \SI{0}{\K}, while being energetically very close to an…

cond-mat.str-el2023★ 5 cited

Magnetic excitations in the topological semimetal $YbMnSb_{2}$

Siobhan M. Tobin, Jian-Rui Soh, Hao Su +5

We report neutron scattering measurements on YbMnSb $_{2}$ which shed new light on the nature of the magnetic moments and their interaction with Dirac fermions. Using half-polarized n…

cond-mat.supr-con2022★ 2 cited

Gradual emergence of superconductivity in underdoped LSCO

Ana-Elena Tutueanu, Machteld E. Kamminga, Tim B. Tejsner +13

We present triple-axis neutron scattering studies of low-energy magnetic fluctuations in strongly underdoped La $_{2 - x}$ Sr $_{x}$ CuO $_{4}$ with $x = 0.05$ , $0.06$ and $0.07$ , providing…

cond-mat.str-el2022

Phonon renormalization effects accompanying the 6 K anomaly in the Quantum Spin Liquid Candidate $κ$ -(BEDT-TTF) $_{2}$ Cu $_{2}$ (CN) $_{3}$

Masato Matsuura, Takahiko Sasaki, Makoto Naka +5

The low-temperature state of the quantum spin liquid candidate $κ$ -(BEDT-TTF) $_{2}$ Cu $_{2}$ (CN) $_{3}$ emerges via an anomaly at $T^{*} \sim 6$ K. Although signatures of this anomaly…

cond-mat.str-el2020

Charge disproportionation and nano phase separation in $R$ SrNiO $_{4}$

H. Guo, Z. W. Li, C. F. Chang +16

We have successfully grown centimeter-sized layered $R$ SrNiO $_{4}$ single crystals under high oxygen pressures of 120 bar by the floating zone technique. This enabled us to perform n…

cond-mat.mes-hall2020★ 15 cited

Spin Seebeck effect and magnon diffusion length in $Fe_{3} O_{4}$

G. Venkat, C. D. W. Cox, D. Voneshen +4

The determination of the magnon diffusion length (MDL) is important for increasing the efficiency of spin Seebeck effect (SSE) based devices utilising non-metallic magnets. We extr…

cond-mat.supr-con2019★ 4 cited

Anomalous Dispersion of LO Phonons in Oxygen-Doped La $_{2 - x}$ Sr $_{x}$ CuO $_{4 + δ}$

Tim Tejsner, Andrea Piovano, Ana Ţuţueanu +5

Inelastic neutron scattering has been used to study the in-plane Cu-O bond-stretching mode in oxygen doped La $_{1.94}$ Sr $_{0.06}$ CuO $_{4.035}$ ( $T_{c} = 38 K$ ) and La $_{2}$ CuO$…

cond-mat.str-el2019★ 33 cited

Magnetic structure and excitations of the topological semimetal YbMnBi $_{2}$

Jian-Rui Soh, Henrik Jacobsen, Bachir Ouladdiaf +9

We investigated the magnetic structure and dynamics of YbMnBi $_{2}$ , with elastic and inelastic neutron scattering, to shed light on the topological nature of the charge carriers in…

cond-mat.str-el2019★ 13 cited

Lattice dynamics coupled to charge and spin degrees of freedom in the molecular dimer-Mott insulator $κ$ -(BEDT-TTF) $_{2}$ Cu[N(CN) $_{2}$ ]Cl

Masato Matsuura, Takahiko Sasaki, Satoshi Iguchi +11

Inelastic neutron scattering measurements on the molecular dimer-Mott insulator $κ$ -(BEDT-TTF) $_{2}$ Cu[N(CN) $_{2}$ ]Cl reveal a phonon anomaly in a wide temperature range. Starting…

cond-mat.str-el2017★ 164 cited

Antiferromagnetic correlations in the metallic strongly correlated transition metal oxide LaNiO $_{3}$

H. Guo, Z. W. Li, L. Zhao +10

The material class of rare earth nickelates with high Ni $^{3 +}$ oxidation state is generating continued interest due to the occurrence of a metal-insulator transition with charge o…

cond-mat.str-el2017★ 25 cited

Spindynamics in the antiferromagnetic phases of the Dirac metals $A$ MnBi $_{2}$ ( $A =$ Sr, Ca)

Marein C. Rahn, Andrew J. Princep, Andrea Piovano +4

The square Bi layers in $A$ MnBi $_{2}$ ( $A =$ Sr, Ca) host Dirac fermions which coexist with antiferromagnetic order on the Mn sublattice below $T_{N} = 290$ K (Sr) and $270\,…

cond-mat.str-el2016★ 24 cited

Incommensurate spin correlations in highly oxidized cobaltates La $_{2 - x}$ Sr $_{x}$ CoO $_{4}$

Z. W. Li, Y. Drees, C. Y. Kuo +13

We observe quasi-static incommensurate magnetic peaks in neutron scattering experiments on layered cobalt oxides La2-xSrxCoO4 with high Co oxidation states that have been reported…

cond-mat.str-el2016

Electronic and magnetic nano phase separation in cobaltates La $_{2 - x}$ Sr $_{x}$ CoO $_{4}$

Z. W. Li, Y. Drees, A. Ricci +11

The single-layer perovskite cobaltates have attracted enormous attention due to the recent observation of hour-glass shaped magnetic excitation spectra which resemble the ones of t…

cond-mat.str-el2015★ 41 cited

Highly anisotropic magnon dispersion in Ca2RuO4: evidence for strong spin orbit coupling

S. Kunkemöller, D. Khomskii, P. Steffens +3

The magnon disp ersion in Ca2RuO4 has been determined by inelastic neutron scattering on single crytals containing 1% of Ti. The dispersion is well described by a conventional Heis…

cond-mat.str-el2015★ 47 cited

Hour-glass magnetic excitations induced by nanoscopic phase separation in cobalt oxides La $_{2 - x}$ Sr $_{x}$ CoO $_{4}$

Y. Drees, Z. W. Li, A. Ricci +10

The magnetic excitations in the cuprate superconductors might be essential for an understanding of high-temperature superconductivity. In these cuprate superconductors the magnetic…

cond-mat.str-el2015★ 40 cited

Crystal structure and phonon softening in Ca3Ir4Sn13

D. G. Mazzone, S. Gerber, J. L. Gavilano +14

We investigated the crystal structure and lattice excitations of the ternary intermetallic stannide Ca3Ir4Sn13 using neutron and x-ray scattering techniques. For T > T* ~ 38 K the…

cond-mat.str-el2013★ 31 cited

Hour-glass magnetic spectrum in a stripe-less insulating transition metal oxide

Y. Drees, D. Lamago, A. Piovano +1

An hour-glass shaped magnetic excitation spectrum appears to be an universal characteristic of the high-temperature superconducting cuprates. Fluctuating charge stripes or alternat…

cond-mat.str-el2013★ 22 cited

One-Dimensional Dispersive Magnon Excitation in the Frustrated Spin-2 Chain System Ca3Co2O6

Anil Jain, P. Y. Portnichenko, Hoyoung Jang +7

Using inelastic neutron scattering, we have observed a quasi-one-dimensional dispersive magnetic excitation in the frustrated triangular-lattice spin-2 chain oxide Ca3Co2O6. At the…

cond-mat.supr-con2013★ 7 cited

Magnetic anisotropic energy gap and low energy spin wave excitation in antiferromagnetic block phase of K2Fe4Se5

Y. Xiao, S. Nandi, Y. Su +11

Neutron scattering experiments were performed to investigate magnetic order and magnetic excitations in ternary iron chalcogenide K2Fe4Se5. The formation of a superlattice structur…

cond-mat.supr-con2012★ 33 cited

Similar zone-center gaps in the low-energy spin-wave spectra of NaFeAs and BaFe2As2

J. T. Park, G. Friemel, T. Loew +10

We report results of inelastic-neutron-scattering measurements of low-energy spin-wave excitations in two structurally distinct families of iron-pnictide parent compounds: Na(1-δ)F…

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

Anharmonicity of the antiferrodistortive soft mode in barium zirconate BaZrO3​

Magnetic excitations in the topological semimetal YbMnSb2​

Gradual emergence of superconductivity in underdoped LSCO

Phonon renormalization effects accompanying the 6 K anomaly in the Quantum Spin Liquid Candidate κ-(BEDT-TTF)2​Cu2​(CN)3​

Charge disproportionation and nano phase separation in RSrNiO4​

Spin Seebeck effect and magnon diffusion length in Fe3​O4​

Anomalous Dispersion of LO Phonons in Oxygen-Doped La2−x​Srx​CuO4+δ​

Magnetic structure and excitations of the topological semimetal YbMnBi2​

Lattice dynamics coupled to charge and spin degrees of freedom in the molecular dimer-Mott insulator κ-(BEDT-TTF)2​Cu[N(CN)2​]Cl

Antiferromagnetic correlations in the metallic strongly correlated transition metal oxide LaNiO3​

Spindynamics in the antiferromagnetic phases of the Dirac metals AMnBi2​ (A= Sr, Ca)

Incommensurate spin correlations in highly oxidized cobaltates La2−x​Srx​CoO4​

Electronic and magnetic nano phase separation in cobaltates La2−x​Srx​CoO4​