Masahiko Isobe

activity

20182026

most citedInfrared phonon spectra of quasi-one-dimensional Ta

_{2}

NiSe

_{5}

and Ta

_{2}

NiS

_{5}

42 citations · 54 across the 11 of their papers we have counts for

collaborators

12 papers

cond-mat.str-el2026

Anisotropic magnetoelastic coupling in the honeycomb magnet Na $_{3}$ Co $_{2}$ SbO $_{6}$

Prashanta K. Mukharjee, Sebastian Erdmann, Lichen Wang +8

We present magnetization and dilatometry measurements on the honeycomb cobaltate Na $_{3}$ Co $_{2}$ SbO $_{6}$ and map out its detailed field-temperature phase diagram down to sub-Kelvin tem…

cond-mat.supr-con2025

Magnetism of the alternating monolayer-trilayer phase of La $_{3}$ Ni $_{2}$ O $_{7}$

Rustem Khasanov, Thomas J. Hicken, Hubertus Luetkens +9

Understanding the magnetic ground state of Ruddlesden-Popper nickelates is crucial, as these materials exhibit superconductivity under high pressure and host competing electronic o…

cond-mat.str-el2025

Comparative Raman study of Ruddlesden-Popper nickelates and the monolayer-trilayer polymorph

Vignesh Sundaramurthy, Abhi Suthar, Pascal Puphal +12

Ruddlesden-Popper (RP) nickelates have attracted intense interest following the discovery of superconductivity in several members of the series, including bilayer (BL) La $_{3}$ Ni $_{2}$ …

cond-mat.str-el2025

Magnetic Frustration in CuYbSe $_{2}$ : an Yb-Based Triangular Lattice Selenide

Barkha Khattar, Anzar Ali, Masahiko Isobe +1

The Yb based triangular lattice delafossites $A$ Yb $X_{2}$ ( $A$ = alkali metal, $X$ = O, S, Se) have recently been studied as quantum spin liquid candidates. We report the synthesis o…

cond-mat.str-el2025★ 2 cited

Lattice dynamics of the infinite-layer nickelate LaNiO $_{2}$

Shohei Hayashida, Vignesh Sundaramurthy, Wenfeng Wu +8

Infinite-layer (IL) nickelates have rapidly emerged as a new class of superconductors. However, due to the technical challenges of their topotactic synthesis, they have so far been…

cond-mat.str-el2025★ 1 cited

Multiorbital character of the density wave in trilayer nickelate superconductors

A. Suthar, V. Sundaramurthy, M. Bejas +15

Ruddlesden-Popper nickelates exhibit high-temperature superconductivity closely intertwined with charge and spin density waves. However, fundamental questions persist regarding the…

cond-mat.mtrl-sci2024

Unraveling nano-scale effects of topotactic reduction in LaNiO $_{2}$ crystals

Yu-Mi Wu, Pascal Puphal, Masahiko Isobe +4

Infinite-layer nickelates stand as a promising frontier in the exploration of unconventional superconductivity. Their synthesis through topotactic oxygen reduction from the parent…

cond-mat.supr-con2024★ 6 cited

Electronic structure of the alternating monolayer-trilayer phase of La3Ni2O7

Sebastien N. Abadi, Ke-Jun Xu, Eder G. Lomeli +12

Recent studies of La $_{3}$ Ni $_{2}$ O $_{7}$ have identified a bilayer (2222) structure and an unexpected alternating monolayer-trilayer (1313) structure, both of which feature signatures o…

cond-mat.mtrl-sci2023

Disentangling the Effects of Structure and Lone-Pair Electrons in the Lattice Dynamics of Halide Perovskites

Sebastián Caicedo-Dávila, Adi Cohen, Silvia G. Motti +8

Metal halide perovskites have shown great performance as solar energy materials, but their outstanding optoelectronic properties are paired with unusually strong anharmonic effects…

cond-mat.str-el2023★ 3 cited

Spin-orbit excitons in a correlated metal: Raman scattering study of Sr2RhO4

Lichen Wang, Huimei Liu, Valentin Zimmermann +6

Using Raman spectroscopy to study the correlated 4 $d$ -electron metal Sr $_{2}$ RhO $_{4}$ , we observe pronounced excitations at 220 meV and 240 meV with $A_{1g}$ and $B_\mathrm{1g}…

cond-mat.str-el2018★ 42 cited

Infrared phonon spectra of quasi-one-dimensional Ta $_{2}$ NiSe $_{5}$ and Ta $_{2}$ NiS $_{5}$

T. I. Larkin, R. D. Dawson, M. Höppner +6

Using a combination of infrared ellipsometry, time-domain terahertz spectroscopy, and far-infrared reflectometry we have obtained the $a c$ -plane complex dielectric function of mono…

cond-mat.str-el2018

Zigzag spin chains in the spin-5/2 antiferromagnet Ba $_{2}$ Mn(PO $_{4})_{2}$

Arvind Yogi, A. K. Bera, Ashwin Mohan +5

Magnetic properties and magnetic structure of the Ba $_{2}$ Mn(PO $_{4}$ ) $_{2}$ antiferromagnet featuring frustrated zigzag chains of $S = \frac{5}{2}$ Mn $^{2 +}$ ions are reported based…

Anisotropic magnetoelastic coupling in the honeycomb magnet Na3​Co2​SbO6​

Magnetism of the alternating monolayer-trilayer phase of La3​Ni2​O7​