Abdullah Al‐Mahboob

Direct evidence for robust bulk band gap across the charge density wave transition in TiSe 2

Anonymous, Anil Rajapitamahuni, Muhammad Awais Fiaz, Zhenxian Liu et autres

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Direct Evidence for Robust Bulk Band Gap Across the Charge Density Wave Transition in TiSe2

Turgut Yilmaz, Anil Rajapitamahuni, Muhammad Awais Fiaz, Zhenxian Liu et autres

The mechanism driving the charge density wave (CDW) transition in TiSe2 has been debated for decades, with proposals ranging from an excitonic insulator to a lattice-driven instability. A central question remains whether the transition involves an opening or enhancement of the bulk …

Direct Evidence for Robust Bulk Band Gap Across the Charge Density Wave Transition in TiSe2

Turgut Yilmaz, Anil Rajapitamahuni, Muhammad Awais Fiaz, Zhenxian Liu et autres

The mechanism driving the charge density wave (CDW) transition in TiSe2 has been debated for decades, with proposals ranging from an excitonic insulator to a lattice-driven instability. A central question remains whether the transition involves an opening or enhancement of the bulk …

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Visualization of the surface distribution of photocatalytic activity at the anatase/rutile TiO2 interface using X-ray photoelectron emission microscopy

Keita Hiromori, Nobuo Nakajima, Shin-ichi Wada, Jerzy T. Sadowski et autres

We applied X-ray photoelectron emission microscopy (XPEEM) to visualize the surface distribution of photocatalytic activity at the anatase/rutile (A/R) interface of titanium dioxide. Acetic acid was adsorbed on the surface, and its decomposition and desorption reactions under ultraviolet light irradiation were monitored …

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Domain-Dependent Electronic Properties of 2D Copper Boride Synthesized from Reversible Subsurface Diffusion on Cu(111)

Kevin M. Sutherland, Dahee Lee, Jennifer Sanchez, Adam Buratowski et autres

Emerging boron-based 2D materials hold properties with potential applications ranging from electronic devices to catalysis and energy storage. Using physical vapor deposition, 2D copper borides are formed on Cu(111) at elevated temperatures. However, the as-prepared surfaces often contain boron clusters that compromise …

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Thermally driven surface phase separation in intermetallic alloys

Shyam Bharatkumar Patel, Xiaobo Chen, Dongxiang Wu, Zhikang Zhou et autres

Intermetallic compounds are widely recognized for their high-temperature phase stability and resistance to composition and structural changes. However, we reveal a thermally activated bulk-to-surface mass exchange mechanism that drives surface phase separation, resulting in the formation of surface precipitates with distinct composition …

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Dilute magnetic impurity-induced effective phonon magnetic moment in Fe-doped monolayer MoS2

Gaihua Ye, Cynthia Nnokwe, Mengqi Fang, Mohamed M. Kandil et autres

Abstract Realization of large effective phonon magnetic moment in monolayer MoS2 has established an important route for exploring intriguing magnetic phenomena in a nonmagnetic material. The sizable coupling between the orbital transition and the circularly polarized phonon results in the large effective …

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Single layer graphene protective layer on GaAs photocathodes for spin-polarized electron source

Jyoti Prasad Biswas, Mengjia Gaowei, Kali Prasanna Mondal, Erdong Wang et autres

GaAs-based photocathodes are the primary choice for polarized electron sources, commonly used in polarized electron microscopes and polarized positron sources. GaAs photocathodes are typically activated with cesium and oxygen, which are highly reactive and require an ultra-high vacuum (∼10−11 Torr or lower) …

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Initiation of dusting corrosion in high-temperature alloys under CO exposure

Shyam Bharatkumar Patel, Jianyu Wang, Chaoran Li, Abdullah Al‐Mahboob et autres

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In Situ Analysis of Electron-Induced Chemical Transformations in Vapor-Phase-Synthesized Al-Based Inorganic–Organic Hybrid Thin Films for EUV Resist Platform

Dan N. Le, Won‐Il Lee, Su Min Hwang, Ashwanth Subramanian et autres

The rapid advancement and stringent requirements of extreme ultraviolet (EUV) lithography technology necessitate the development of advanced photoresist systems for next-generation microelectronics. Recent studies have demonstrated that inorganic-based hybrid photoresists offer notable improvements in EUV sensitivity, etch resistance, and greater insusceptibility to …

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Surface magnetism in Fe3GeTe2 van der Waals ferromagnet

Trevor A. Tyson, D.A.S. Amarasinghe, Milinda Abeykoon, Roger A. Lalancette et autres

Abstract The surface magnetization of Fe3GeTe2 was examined by low-energy electron microscopy (LEEM) using an off-normal incidence electron beam. We found that the 180° domain walls are of Bloch type. Temperature-dependent LEEM measurements yield a surface magnetization with a surface critical exponent …

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Effects of Temperature Fluctuations on Surface Mobility of Atomic Steps and Oxidation Dynamics in High-Temperature Alloys

Shyam Bharatkumar Patel, Chaoran Li, Abdullah Al‐Mahboob, Jerzy T. Sadowski et autres

In contrast to the traditional perspective that thermal fluctuations are insignificant in surface dynamics, here we report their influence on surface reaction dynamics. Using real-time low-energy electron microscopy imaging of NiAl(100) under both vacuum and O 2 atmospheres, we demonstrate that transient …

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