Soft-Phonon and Charge-Density-Wave Formation in Nematic

SM Souliou, T Lacmann, R Heid, C Meingast… - Physical Review Letters, 2022 - APS
We use diffuse and inelastic x-ray scattering to study the formation of an incommensurate
charge-density-wave (I-CDW) in BaNi 2 As 2, a candidate system for charge-driven …

Charge density wave transitions, soft phonon, and possible electronic nematicity in

C Meingast, A Shukla, L Wang, R Heid, F Hardy… - Physical Review B, 2022 - APS
A detailed investigation of BaNi 2 (As 1− x P x) 2 single crystals using high-resolution
thermal-expansion, heat-capacity, Young's-modulus, and resistivity measurements is …

Dynamics of collective modes in an unconventional charge density wave system BaNi2As2

AR Pokharel, V Grigorev, A Mejas, T Dong… - Communications …, 2022 - nature.com
BaNi2As2 is a non-magnetic analogue of BaFe2As2, the parent compound of a prototype
pnictide high-temperature superconductor, displaying superconductivity already at ambient …

High-pressure phase diagram of : Unconventional charge density waves and structural phase transitions

T Lacmann, AA Haghighirad, SM Souliou, M Merz… - Physical Review B, 2023 - APS
Structural phase transitions accompanied by incommensurate and commensurate charge
density wave (CDW) modulations of unconventional nature have been reported in Ba Ni 2 …

Complex structure due to As bonding and interplay with electronic structure in superconducting

BH Lei, Y Guo, Y **e, P Dai, M Yi, DJ Singh - Physical Review B, 2022 - APS
Ba Ni 2 As 2 is a superconductor chemically related to the Fe-based superconductors, with a
complex and poorly understood structural phase transition. We show, based on first …

Chemical pressure tuning of competing orders in

F Henssler, K Willa, M Frachet, T Lacmann… - arxiv preprint arxiv …, 2024 - arxiv.org
$\mathrm {Ba}\mathrm {Ni} _ {2}\mathrm {As} _ {2} $, a structural-analogue to the iron-based
parent compound $\mathrm {Ba}\mathrm {Fe} _ {2}\mathrm {As} _ {2} $, offers a unique …

Charge-density-wave transitions, phase diagram, soft phonon and possible electronic nematicity: a thermodynamic investigation of BaNi2 (As, P) 2

C Meingast, A Shukla, L Wang, R Heid, F Hardy… - arxiv preprint arxiv …, 2022 - arxiv.org
A detailed investigation of BaNi2 (As, P) 2 single crystals using high-resolution thermal-
expansion, heat-capacity, Young-modulus and resistivity measurements is presented. The …

Weakness of Correlation Effect Manifestation in BaNi2As2: An ARPES and LDA + DMFT Study

NS Pavlov, TK Kim, A Yaresko, KY Choi… - The Journal of …, 2021 - ACS Publications
The electronic spectral function of BaNi2As2 is investigated using both angle-resolved
photoemission spectroscopy (ARPES) and a combined computational scheme of local …

Momentum Dependent Band Renormalization and Surface Aging Effect on a Zone Center Electron Pocket in NaSn2As2 Revealed by Angle-Resolved …

Y Akabane, T Shimaiwa, Y Goto… - journal of the physical …, 2020 - journals.jps.jp
We report an angle-resolved photoemission spectroscopy study on NaSn2As2 in which a Sn
5 p band is expected to provide interesting Fermi surface geometry with hole-like and …

Multi-band electronic structure of ferromagnetic CeRuPO

M Takahashi, D Ootsuki, M Horio, M Arita… - journal of the physical …, 2018 - journals.jps.jp
We have studied the multi-band electronic structure of ferromagnetic CeRuPO (TC= 15 K) by
means of angle-resolved photoemission spectroscopy (ARPES). The ARPES results show …