127 citations · 249 across the 10 of their papers we have counts for
11 papers
Charge Density Waves and In-Gap States in Coupled Chains and Moiré Superlattices
Muhammad Akram, Onur Erten
Charge density waves (CDWs) arise from the interplay between electrons and lattice distortions and are a hallmark of low-dimensional systems. Here we study coupled Su-Schrieffer-He…
Magnetically ordered yet topologically robust phases emerging in concurrent Kitaev spin liquids
Muhammad Akram, Aayush Vijayvargia, Hae-Young Kee +1
Spin-orbital generalizations of Kitaev model, such as Yao-Lee model, have attracted recent attention due to their enhanced stability of spin liquid phases against perturbations. Mo…
Emergent phases in the Yao-Lee model via coupling to topological spin textures
Muhammad Akram, Onur Erten
Electrons in metals experience an effective vector potential when coupled to spin textures with non-zero scalar spin chirality, such as skyrmions. This coupling can generate a subs…
Octupolar vortex crystal and toroidal moment in twisted bilayer MnPSe
Muhammad Akram, Fan Yang, Turan Birol +1
Experimental detection of antiferromagnetic order in two-dimensional materials is a challenging task due to the absence of net dipole moments. Identifying multi-domain antiferromag…
Theory of moiré magnetism in twisted bilayer -RuCl
Muhammad Akram, Jesse Kapeghian, Jyotirish Das +3
Twisted heterostructures of van der Waals materials have received much attention for their many remarkable properties. Here, we present a comprehensive theory of the long-range ord…
Revival of antibiskyrmionic magnetic phases in bilayer NiI
Jyotirish Das, Muhammad Akram, Onur Erten
Magnetic skyrmions are topologically protected spin textures with potential applications in memory and logic devices. Skyrmions have been commonly observed in systems with Dzyalosh…
Vison crystals, chiral and crystalline phases in the Yao-Lee model
Muhammad Akram, Emilian Marius Nica, Yuan-Ming Lu +1
We study the phase diagram of the Yao-Lee model with Kitaev-type spin-orbital interactions in the presence of Dzyaloshinskii-Moriya interactions and external magnetic fields. Unlik…
Skyrmion formation in Ni-based Janus dihalide monolayers: Interplay between magnetic frustration and Dzyaloshinskii-Moriya interaction
Taylan Gorkan, Jyotirish Das, Jesse Kapeghian +6
We present a comprehensive theory of the magnetic phases in monolayer nickel-based Janus dihalides (NiIBr, NiICl, NiBrCl) through a combination of first-principles calculations and…
Kitaev spin-orbital bilayers and their moiré superlattices
Emilian Nica, Muhammad Akram, Aayush Vijayvargia +2
We determine the phase diagram of a bilayer, Yao-Lee spin-orbital model with inter-layer interactions (J), for several stackings and moiré superlattices. For AA stacking, a gapped…
Moiré skyrmions and chiral magnetic phases in twisted CrX (X I, Br, Cl) bilayers
Muhammad Akram, Harrison LaBollita, Dibyendu Dey +3
We present a comprehensive theory of the magnetic phases in twisted bilayer Cr-trihalides through a combination of first-principles calculations and atomistic simulations. We show…
Skyrmions in twisted van der Waals magnets
Muhammad Akram, Onur Erten
Magnetic skyrmions in 2D chiral magnets are in general stabilized by a combination of Dzyaloshinskii-Moriya interaction and external magnetic field. Here, we show that skyrmions ca…