A. Ariando

Magnetic proximity effect at the interface of two-dimensional materials and magnetic oxide insulators

Junxiong Hua, Jiangbo Luo, Yuntian Zheng +4

Two-dimensional (2D) materials provide a platform for developing novel spintronic devices and circuits for low-power electronics. In particular, inducing magnetism and injecting sp…

cond-mat.supr-con2021

Charge and spin order dichotomy in NdNiO $_{2}$ driven by SrTiO $_{3}$ capping layer

G. Krieger, L. Martinelli, S. Zeng +10

Superconductivity in infinite-layer nickelates holds exciting analogies with that of cuprates, with similar structures and $3 d$ -electron count. Using resonant inelastic x-ray scatt…

cond-mat.supr-con2025

Persistent paramagnons in high-temperature infinite-layer nickelate superconductors

Yujie Yan, Ying Chan, Xunyang Hong +25

The recent discovery of high-temperature superconductivity in hole-doped SmNiO $_{2}$ , exhibiting the record-high transition temperature $T_{c}$ among infinite-layer (IL) nickelates, ha…

Thickness-driven crossover from conventional to chiral nonreciprocal superconductivity in kagome metal CsV3Sb5

Wei Zhang, Jiangbo Luo, Nikolai Peshcherenko +10

Superconductivity and its potential applications are governed by the symmetry of the superconducting order parameter. In the kagome metal CsV3Sb5, most bulk studies indicate conven…

cond-mat.str-el2018

Oxygen Electromigration and Energy Band Reconstruction Induced by Electrolyte Field Effect at Oxide Interfaces

S. W. Zeng, X. M. Yin, T. S. Herng +13

Electrolyte gating is a powerful means for tuning the carrier density and exploring the resultant modulation of novel properties on solid surfaces. However, the mechanism, especial…

cond-mat.supr-con2023

Pairing symmetry in infinite-layer nickelate superconductor

L. E. Chow, S. Kunniniyil Sudheesh, Z. Y. Luo +11

The superconducting infinite-layer nickelate family has risen as a promising platform for revealing the mechanism of high-temperature superconductivity. However, its challenging ma…

cond-mat.supr-con2024

High-temperature Superconducting Oxide without Copper at Ambient Pressure

S. Lin Er Chow, Zhaoyang Luo, A. Ariando

The discovery of superconductivity in the Ba-La-Cu-O system (the cuprate) at the 30 K range in 1986 marked a significant breakthrough, as it far exceeded the highest known critical…

cond-mat.mtrl-sci2022

Ionic modulation at the LaAlO $_{3}$ /KTaO $_{3}$ interface for extreme high-mobility two-dimensional electron gas

H. Yan, S. W. Zeng, K. Rubi +5

Due to the coexistence of many emergent phenomena, including 2D superconductivity and a large Rashba spin-orbit coupling, 5d transition metal oxides based two-dimensional electron…

cond-mat.str-el2023

Tunable Magnetic Properties in Sr $_{2}$ FeReO $_{6}$ Double-Perovskite

Z. T. Zhang, H. Yan, Z. Huang +8

Double-perovskite oxides have attracted recent attention due to their attractive functionalities and application potential. In this paper, we demonstrate the effect of dual control…

cond-mat.supr-con2024

Hydrogen is not necessary for superconductivity in topotactically reduced nickelates

Purnima P. Balakrishnan, Dan Ferenc Segedin, Lin Er Chow +19

A key open question in the study of layered superconducting nickelate films is the role that hydrogen incorporation into the lattice plays in the appearance of the superconducting…

cond-mat.mtrl-sci2025

Modulation of Quantum Transport in Complex Oxide Heterostructures with Proton Implantation

Haidong Liang, Ganesh Ji Omar, Kun Han +3

The interfacial electronic properties of complex oxides are governed by a delicate balance between charge transfer, lattice distortions, and electronic correlations, posing a key c…

cond-mat.mtrl-sci2022

Experimental Evidence of t2g Electron-Gas Rashba Interaction Induced by Asymmetric Orbital Hybridization

Ganesh Ji Omar, Weilong Kong, Hariom Jani +11

We report the control of Rashba spin-orbit interaction by tuning asymmetric hybridization between Ti-orbitals at the LaAlO3/SrTiO3 interface. This asymmetric orbital hybridization…

Hole-doped superconductivity above 100 K in infinite-layer cuprate thin films

Biemeng Jin, Saurav Prakash, Zhaoyang Luo +15

Since the discovery of superconductivity in (La,Ba)2CuO2 (Ref.~\cite{bednorz1986possible}), a broad family of structurally distinct cuprate superconductors has been proposed or eng…

Ni-O hybridization-driven electronic reconstruction across the superconducting dome in an infinite-layer nickelate

Chi Sin Tang, Shengwei Zeng, Xing Gao +11

Superconductivity in infinite-layer nickelates has drawn wide interest as a cuprate analogue, yet how the electronic structure evolves with hole doping remains unsettled. Here we m…

High-quality NiFe thin films on oxide/non-oxide platforms via pulsed laser deposition at room temperature

H. Yan, G. J. Omar, Z. T. Zhao +2

Soft ferromagnetic NiFe thin films are promising for applications in spintronic devices because of their constituent electrical and magnetic properties. Electron beam evaporation a…

cond-mat.mtrl-sci2022

Skyrmionics in correlated oxides

Zhi Shiuh Lim, Hariom Jani, T. Venkatesan +1

While chiral magnets, metal-based magnetic multilayers, or Heusler compounds have been considered as the material workhorses in the field of skyrmionics, oxides are now emerging as…

cond-mat.supr-con2022

Observation of perfect diamagnetism and interfacial effect on the electronic structures in Nd0.8Sr0.2NiO2 superconducting infinite layers

S. W. Zeng, X. M. Yin, C. J. Li +13

Nickel-based complex oxides have served as a playground for decades in the quest for a copper-oxide analog of the high-temperature superconductivity. They may provide clues towards…

cond-mat.supr-con2023

Dimensionality control and rotational symmetry breaking superconductivity in square-planar layered nickelates

Lin Er Chow, Km Rubi, King Yau Yip +11

The interplay between dimensionality and various phases of matter is a central inquiry in condensed matter physics. New phases are often discovered through spontaneously broken sym…

Direct Determination of Spin-Splitting Energy in Magnetic Graphene by Landau Fan Shifts

J. X. Hu, Y. L. Han, X. Chi +10

Spin-polarized two-dimensional materials with large and tunable spin-splitting energy promise the field of 2D spintronics. While graphene has been a canonical 2D material, its spin…

High-field-stabilized reentrant superconductivity in infinite-layer nickelate thin films

Km Rubi, King Yau Yip, Elizabeth Krenkel +9

Magnetic fields typically suppress superconductivity through Pauli and orbital limiting effects. However, there are rare instances of magnetic-field-induced superconductivity, as s…

cond-mat.mes-hall2023

Scanning SQUID-on-tip microscope in a top-loading cryogen-free dilution refrigerator

Haibiao Zhou, Nadav Auerbach, Indranil Roy +12

The scanning superconducting quantum interference device (SQUID) fabricated on the tip of a sharp quartz pipette (SQUID-on-tip) has emerged as a versatile tool for nanoscale imagin…

cond-mat.supr-con2024

On the origin of topotactic reduction effect for superconductivity in infinite-layer nickelates

Shengwei Zeng, Chi Sin Tang, Zhaoyang Luo +15

Topotactic reduction utilizing metal hydrides as reagents emerges as an effective approach to achieve exceptionally low oxidization states of metal ions and unconventional coordina…

cond-mat.mes-hall2023

Holographic imaging of antiferromagnetic domains with in-situ magnetic field

Jack Harrison, Hariom Jani, Junxiong Hu +7

Lensless coherent x-ray imaging techniques have great potential for high-resolution imaging of magnetic systems with a variety of in-situ perturbations. Despite many investigations…

Artificial two-dimensional polar metal by charge transfer to a ferroelectric insulator

W. X. Zhou, H. J. Wu, J. Zhou +20

Integrating multiple properties in a single system is crucial for the continuous developments in electronic devices. However, some physical properties are mutually exclusive in nat…

Review on ferroelectric/polar metals

W. X. Zhou, A. Ariando

The possibility of reconciliation between seemingly mutually exclusive properties in one system can not only lead to theoretical breakthroughs but also potential novel applications…

cond-mat.supr-con2021

Infinite-layer nickelate superconductors: A current experimental perspective of the crystal and electronic structures

Lin Er Chow, A. Ariando

After the reward of more than two decades of pursuit on the high-Tc cuprate analog with the hope to obtain a better understanding of the mechanism of high-Tc superconductivity, the…

cond-mat.mes-hall2026

Electrostatic gate-controlled quantum interference in a high-mobility two-dimensional electron gas at the (La $_{0.3}$ Sr $_{0.7}$ )(Al $_{0.65}$ Ta $_{0.35}$ )O $_{3}$ /SrTiO $_{3}$ interface

Km Rubi, Kun Han, Huang Zhen +4

We report quantum oscillations in magnetoresistance that are periodic in magnetic field ( $B$ ), observed at the interface between (La $_{0.3}$ Sr $_{0.7}$ )(Al $_{0.65}$ Ta $_{0.35}$ )O $_{3}$ …

cond-mat.mtrl-sci2021

Electronic subbands in the a-LaAlO $_{3}$ /KTaO $_{3}$ interface revealed by quantum oscillations in high magnetic fields

Km Rubi, Shengwei Zeng, Femke Bangma +4

Investigating Shubnikov-de Haas (SdH) oscillations in high magnetic fields, we experimentally infer the electronic band structure of the quasi-two-dimensional electron gas (2DEG) a…

Antiferromagnetic Half-skyrmions and Bimerons at room temperature

Hariom Jani, Jheng-Cyuan Lin, Jiahao Chen +8

In the quest for post-CMOS technologies, ferromagnetic skyrmions and their anti-particles have shown great promise as topologically protected solitonic information carriers in memo…

cond-mat.str-el2024

Angular dependence of hump-shape Hall Effects for distinguishing between Karplus-Luttinger and Geometrical Origins

Z. S. Lim, L. E. Chow, K. H. Khoo +7

Among the vast magnetic heterostructures explored in Condensed Matter Physics, two contrasting interpretations of the hump-shaped Hall Effects remain ambiguous and debated, namely,…

Multifunctional Oxides for Topological Magnetic Textures by Design

Z. S. Lim, A. Ariando

Several challenges in designing an operational Skyrmion racetrack memory are well-known. Among those challenges, a few contradictions can be identified if researchers were to rely…