Publications (17)
Three-Dimensional Real Space Invariants, Obstructed Atomic Insulators and A New Principle for Active Catalytic Sites
Yuanfeng Xu, Luis Elcoro, Guowei Li +7
Topologically trivial insulators come in two kinds: atomic, where the Wannier charge centers (WCCs) are localized on the atoms, and obstructed atomic, where the WCCs are located aw…
ShiftsReduce: Minimizing Shifts in Racetrack Memory 4.0
Asif Ali Khan, Fazal Hameed, Robin Blaesing +2
Racetrack memories (RMs) have significantly evolved since their conception in 2008, making them a serious contender in the field of emerging memory technologies. Despite key techno…
Modulation of anomalous Hall angle in a magnetic topological semimetal
Jinying Yang, Yanxing Shang, Xingchen Liu +14
The anomalous Hall angle (θA) is a measure of the efficiency of converting a longitudinal driving current to a transverse spin-polarized Hall current. For anomalous Hall sensing,…
Non-Majorana modes in diluted spin chains proximitized to a superconductor
Felix Küster, Sascha Brinker, Richard Hess +5
Spin chains proximitized with superconducting condensates have emerged as one of the most promising platforms for the realization of Majorana modes. Here, we craft diluted spin cha…
Pressure-induced superconductivity and topological quantum phase transitions in a quasi-one-dimensional topological insulator: Bi4I4
Yanpeng Qi, Wujun Shi, Peter Werner +8
Superconductivity and topological quantum states are two frontier fields of research in modern condensed matter physics. The realization of superconductivity in topological materia…
Butterfly Magnetoresistance, Quasi-2D Dirac Fermi Surfaces, and a Topological Phase Transition in ZrSiS
Mazhar N. Ali, Leslie M. Schoop, Chirag Garg +4
Magnetoresistance (MR), the change of a material's electrical resistance in response to an applied magnetic field, is a technologically important property that has been the topic o…
Thermal radiative near field transport between vanadium dioxide and silicon oxide across the metal insulator transition
Fabian Menges, Matthias Dittberner, Lukas Novotny +5
The thermal radiative near field transport between vanadium dioxide and silicon oxide at submicron distances is expected to exhibit a strong dependence on the state of vanadium dio…
Surface states in bulk single crystal of topological semimetal CoSnS towards water oxidation
Guowei Li, Qiunan Xu, Wujun Shi +16
The band inversion in topological phase matters bring exotic physical properties such as the emergence of a topologically protected surface states. They strongly influence the surf…
Weyl semimetals as catalysts
Catherine R. Rajamathi, Uttam Gupta, Nitesh Kumar +9
The search for highly efficient and low-cost catalysts is one of the main driving forces in catalytic chemistry. Current strategies for the catalyst design focus on increasing the…
Crossover from Kondo assisted suppression to co-tunneling enhancement of tunneling magnetoresistance via ferromagnetic nanodots in MgO tunnel barriers
Hyunsoo Yang, See-Hun Yang, Stuart Parkin
Recently, it has been shown that magnetic tunnel junctions with thin MgO tunnel barriers exhibit extraordinarily high tunneling magnetoresistance (TMR) values at room temperature1,…
Origin of the quasi-quantized Hall effect in ZrTe5
Stanislaw Galeski, Toni Ehmcke, Rafal Wawrzynczak +24
The quantum Hall effect (QHE) is traditionally considered a purely two-dimensional (2D) phenomenon. Recently, a three-dimensional (3D) version of the QHE has been reported in the D…
Superconductivity in Weyl Semimetal Candidate MoTe2
Yanpeng Qi, Pavel G. Naumov, Mazhar N. Ali +19
In recent years, layered transition-metal dichalcogenides (TMDs) have attracted considerable attention because of their rich physics; for example, these materials exhibit supercond…
In situ modification of delafossite type PdCoO2 bulk single crystal for reversible hydrogen sorption and fast hydrogen evolution
Guowei Li, Seunghyun Khim, Celesta S. Chang +11
The observation of extraordinarily high conductivity in delafossite-type PdCoO2 is of great current interest, and there is some evidence that electrons behave like a fluid when flo…
Intrinsic 2D-XY ferromagnetism in a van der Waals monolayer
Amilcar Bedoya-Pinto, Jing-Rong Ji, Avanindra Pandeya +6
Long before the recent fascination with two-dimensional materials, the critical behaviour and universality scaling of phase transitions in low-dimensional systems has been a topic…
Towards Weyltronics: Realization of epitaxial NbP and TaP Weyl Semimetal thin films
Amilcar Bedoya-Pinto, Avanindra Kumar Pandeya, Defa Liu +7
Weyl Semimetals (WSMs), a recently discovered topological state of matter, exhibit an electronic structure governed by linear band dispersions and degeneracy (Weyl) points leading…
Interaction effects in a 1D flat band at a topological crystalline step edge
Glenn Wagner, Souvik Das, Johannes Jung +11
Step edges of topological crystalline insulators can be viewed as predecessors of higher-order topology, as they embody one-dimensional edge channels embedded in an effective three…
A Charge-Density-Wave Topological Semimetal
Wujun Shi, Benjamin J. Wieder, H. L. Meyerheim +14
Topological physics and strong electron-electron correlations in quantum materials are typically studied independently. However, there have been rapid recent developments in quantu…