40 citations · 200 across the 13 of their papers we have counts for
13 papers
Surface termination effect of SrTiO3 substrate on ultrathin SrRuO3
Huiyu Wang, Zhen Wang, Zeeshan Ali +6
A uniform one-unit-cell-high step on the SrTiO3 substrate is a prerequisite for growing high-quality epitaxial oxide heterostructures. However, it is inevitable that defects induce…
Tuning Structural, Transport and Magnetic Properties of Epitaxial SrRuO3 through Ba-Substitution
Zeeshan Ali, Zhen Wang, Alessandro R. Mazza +5
The perovskite ruthenates (ARuO3, A = Ca, Ba, or Sr) exhibit unique properties owing to a subtle interplay of crystal structure and electronic-spin degrees of freedom. Here, we dem…
Thickness Dependent Itinerant Ferromagnetism in Ultrathin Ba-Doped SrRuO3 films
Zeeshan Ali, Mohammad Saghayezhian, Prahald Siwakoti +2
The electronic and magnetic properties in ABO3 perovskite oxides are extremely sensitive to lattice structure but also the dimensionality, such as the thickness in thin film form.…
The origin of insulating and non-ferromagnetic SrRuO3 monolayers
Zeeshan Ali, Zhen Wang, Andrew O'Hara +5
The electro-magnetic properties of ultrathin epitaxial ruthenate films have long been the subject of debate. Here we combine experimental with theoretical investigations of (SrTiO3…
Abrupt orthorhombic relaxation in compressively strained ultra-thin SrRuO3 films
Prahald Siwakoti, Zhen Wang, Mohammad Saghayezhian +4
Lattice structure can dictate electronic and magnetic properties of a material. Especially, reconstruction at a surface or heterointerface can create properties that are fundamenta…
Visualizing quantum phenomena at complex oxide interfaces: an atomic view from scanning transmission electron microscopy
Hangwen Guo, Mohammad Saghayezhian, Zhen Wang +3
Complex oxide interfaces have been one of the central focuses in condensed matter physics and material science. Over the past decade, aberration corrected scanning transmission ele…
Fermions and bosons in nonsymmorphic PdSb2 with sixfold degeneracy
Ramakanta Chapai, Yating Jia, W. A. Shelton +6
PdSb2 is a candidate for hosting 6-fold-degenerate exotic fermions (beyond Dirac and Weyl fermions).The nontrivial band crossing protected by the nonsymmorphic symmetry plays a cru…
Role of disorder and correlations in metal-insulator transition in ultrathin SrVO3 films
Gaomin Wang, Zhen Wang, Meng Meng +7
Metallic oxide SrVO3 represents a prototype system for the study of the mechanism behind thickness-induced metal-to-insulator transition (MIT) or crossover in thin films due to its…
Surface and Interface Properties of La2/3Sr1/3MnO3 Thin Films on SrTiO3 (001)
Lina Chen, Zhen Wang, Gaomin Wang +6
Understanding and manipulating properties emerging at a surface or an interface require a thorough knowledge of structure-property relationships. We report a study of a prototype o…
Observation of Giant Exchange Bias and Topological Hall Effect in Manganese Nitride Films
Meng Meng, Shuwei Li, Mohammad Saghayezhian +2
Magnetic and magneto-transport properties of manganese nitride films grown by molecular beam epitaxy have been investigated. Due to the mixed ferrimagnetic (FI) phase (-phase wi…
Manipulating the Polar mismatch at LaNiO3/SrTiO3 (111) Interface
Mohammad Saghayezhian, Zhen Wang, Hangwen Guo +3
Heteroepitaxial growth of transition-metal oxide films on the open (111) surface of SrTiO3 results in significant restructuring due to the polar mismatch. Monitoring the structural…
Unusual Fe-H bonding associated with oxygen vacancies at the (001) surface of Fe3O4
Fangyang Liu, Chen Chen, Hangwen Guo +6
An unusual Fe-H bonding rather than conventional OH bonding is identified at Fe3O4 (001) surface. This abnormal behavior is associated with the oxygen vacancies which exist on the…
Polar compensation at the surface of SrTiO3 (111)
Mohammad Saghayezhian, Lina Chen, Gaomin Wang +3
We have systematically investigated the annealing effect on the structure and composition of the polar surface of SrTiO3 (111), starting with an ex-situ chemical etch. The relative…