@article{nabei_yang_sun_jones_mai_wang_bodin_pandey_wang_xiong_et al._2026, title={Orbital Seebeck effect induced by chiral phonons}, volume={22}, ISSN={1745-2473 1745-2481}, url={http://dx.doi.org/10.1038/s41567-025-03134-x}, DOI={10.1038/s41567-025-03134-x}, number={2}, journal={Nature Physics}, publisher={Springer Science and Business Media LLC}, author={Nabei, Yoji and Yang, Cong and Sun, Hong and Jones, Hana and Mai, Thuc and Wang, Tian and Bodin, Rikard and Pandey, Binod and Wang, Ziqi and Xiong, Yuzan and et al.}, year={2026}, month={Jan}, pages={245–251} }
 @article{sun_nabei_mcconnell_zhang_comstock_jones_gyawali_xiong_wang_liu_et al._2025, title={Determination of orbital relaxation in Ti/Ni heterostructure via orbital pumping}, volume={138}, ISSN={0021-8979 1089-7550}, url={http://dx.doi.org/10.1063/5.0292745}, DOI={10.1063/5.0292745}, abstractNote={Orbital current has attracted significant attention in recent years due to its potential for energy-efficient magnetization control without the need for materials with strong spin–orbit coupling. However, the fundamental mechanisms governing orbital transport remain elusive. In this study, we systematically explore orbital transport in Ti/Ni bilayers through orbital pumping, drawing an analogy to spin pumping. The orbital current is generated and injected into the Ti layer via the microwave-driven orbital dynamics in Ni, facilitated by its strong spin–orbit correlation. We employed thickness-dependent ferromagnetic resonance measurements and angular-dependent inverse orbital Hall effect (IOHE) detection to probe orbital transport in Ti based on the conventional spin-pumping methodology. The observed enhancement in the damping factor indicates an orbital-diffusion length of ∼5.3 ± 3.7 nm, while IOHE-based estimation suggests a value of around 4.0 ± 1.2 nm, which confirms its short orbital-diffusion length. Furthermore, oblique Hanle measurements in the longitudinal configuration reveal an orbital relaxation time of approximately 16 ps. Our results establish that orbital pumping, analogous to the conventional spin-pumping framework, can serve as a robust technique for elucidating orbital transport mechanisms, paving the way for the design of efficient spin-orbitronic devices.}, number={12}, journal={Journal of Applied Physics}, publisher={AIP Publishing}, author={Sun, Rui and Nabei, Yoji and McConnell, Aeron and Zhang, Xiaotong and Comstock, Andrew and Jones, Hana and Gyawali, Rishiram and Xiong, Yuzan and Wang, Ziqi and Liu, Jun and et al.}, year={2025}, month={Sep} }
 @article{ghanbari_harikrishnan_patel_zhou_zhou_liu_wu_khandelwal_crust_hazra_et al._2025, title={Strain-induced lead-free morphotropic phase boundary}, volume={16}, DOI={10.1038/s41467-025-63041-w}, abstractNote={Enhanced susceptibilities in ferroelectrics often arise near phase boundaries between competing ground states. While chemically-induced phase boundaries have enabled ultrahigh electrical and electromechanical responses in lead-based ferroelectrics, precise chemical tuning in lead-free alternatives, such as (K,Na)NbO 3  thin films, remains challenging due to the high volatility of alkali metals. Here, we demonstrate strain-induced morphotropic phase boundary-like polymorphic nanodomain structures in chemically simple, lead-free, epitaxial NaNbO 3  thin films. Combining ab initio simulations, thin-film epitaxy, scanning probe microscopy, synchrotron X-ray diffraction, and electron ptychography, we reveal a labyrinthine structure comprising coexisting monoclinic and bridging triclinic phases near a strain-induced phase boundary. The coexistence of energetically competing phases facilitates field-driven polarization rotation and phase transitions, giving rise to a multi-state polarization switching pathway and large enhancements in dielectric susceptibility and tunability across a broad frequency range. Our results open new possibilities for engineering lead-free thin films with enhanced functionalities for next-generation applications.}, number={1}, journal={Nature Communications}, author={Ghanbari, Reza and Harikrishnan, KP and Patel, Kinnary and Zhou, Hua and Zhou, Tao and Liu, Rui and Wu, Liyan and Khandelwal, Aarushi and Crust, Kevin J. and Hazra, Sankalpa and et al.}, year={2025}, month={Aug} }
 @article{xu_saiev_qian_nabei_wang_rinehart_österholm_jones_lee_hwang_et al._2025, title={Supramolecular chirality largely modulates chemical doping of conjugated polymers}, volume={16}, ISSN={2041-1723}, url={http://dx.doi.org/10.1038/s41467-025-62915-3}, DOI={10.1038/s41467-025-62915-3}, abstractNote={Chemical doping has unlocked the touted potential of conjugated polymers by significantly boosting their conductivity and device performance. Yet, the relationship between doping and the polymers' complex, multiscale morphology remains elusive. Herein, we report a surprising find that supramolecular chirality, which up to now had not been considered a parameter relevant to doping, significantly boosts the underpinning redox reaction in conjugated polymer thin films. The chiral helical structures arise during an evaporative assembly process upon meniscus-guided coating, when the originally racemic conjugated polymer chains aggregate first and assemble into chiral twist-bent nematic mesophases which "imprint" their solution-state structure into solid thin films. By manipulating the solution aggregate structures through only subtle variations in the solvent nature, we modulate the structures of the liquid crystal phases to access a broad spectrum of supramolecular chirality, from achiral, to weakly chiral, and to strongly chiral. The differential solubilities of the side-chains and backbones in various solvent environments-elucidated by molecular dynamics simulations-underpin transitions in solution assembly behaviors. Upon sequential doping, the strongly chiral film exhibits a markedly higher charge carrier concentration leading to the highest doping efficiency and electrical conductivity, followed by the weakly chiral and the achiral films. Such increased conductivity in chiral structures is observed across three sets of polymer systems. We further suggest that enhanced crystallinity from chiral assembly facilitates the doping process, while chirality-induced spin selectivity may accelerate oxidation over reduction, together resulting in increased doping efficiency in chiral structures.}, number={1}, journal={Nature Communications}, publisher={Springer Science and Business Media LLC}, author={Xu, Zhuang and Saiev, Shamil and Qian, Peisen and Nabei, Yoji and Wang, Ziming and Rinehart, Joshua M. and Österholm, Anna M. and Jones, Austin L. and Lee, Jong-Hoon and Hwang, Changhyun and et al.}, year={2025}, month={Sep} }