90 citations · 430 across the 23 of their papers we have counts for
23 papers
Crystal Growth and Physical Properties of Orthorhombic Kagome Lattice Magnets FeGe (=Y, Tb, Dy)
Abhijeet Nayak, Sk Jamaluddin, Fan Wu +10
Kagome magnets represent a promising class of materials that exhibit intriguing electronic and magnetic properties, and they have recently garnered significant attention. While mos…
Cost-effective Deep Learning Infrastructure with NVIDIA GPU
Aatiz Ghimire, Shahnawaz Alam, Siman Giri +1
The growing demand for computational power is driven by advancements in deep learning, the increasing need for big data processing, and the requirements of scientific simulations f…
Large anomalous Hall conductivity in Weyl ferrimagnet CsCoS predicted by density-functional calculations
Gang Bahadur Acharya, Manuel Richter, Klaus Koepernik +1
The identification of topological Weyl semimetals has recently gained considerable attention. Here, we report the results of density-functional theory calculations regarding the ma…
Electronic and optical properties of ternary kagome Rb2Ni3S4: a density functional study
Gang Bahadur Acharya, Se-Hun Kim, Madhav Prasad Ghimire
The application of semiconductors with optical properties has grown significantly in the development of semiconductor photovoltaics. Here, we explore the electronic and optical pro…
Large anomalous Hall effect in single crystals of the kagome Weyl ferromagnet FeSn
Bishnu P. Belbase, Linda Ye, Bishnu Karki +5
The material class of kagome metals has rapidly grown and has been established as a field to explore the interplay between electronic topology and magnetism. In this work, we repor…
Weyl Metal Phase in Delafossite Oxide PtNiO
Gang Bahadur Acharya, Mohan Bikram Neupane, Rojila Ghimire +1
On the basis of density functional theory calculations we predict Weyl points in rhombohedral structure of PtNiO having symmorphic symmetry. From the formation energy and phono…
CoTe2: A quantum critical Dirac metal with strong spin fluctuations
Peter E. Siegfried, Hari Bhandari, Jeanie Qi +13
Quantum critical points separating weak ferromagnetic and paramagnetic phases trigger many novel phenomena. Dynamical spin fluctuations not only suppress the long-range order, but…
Field-dependent Shubnikov-de Haas oscillations in ferromagnetic Weyl semimetal Co3Sn2S2
Linda Ye, Jorge I. Facio, Madhav P. Ghimire +6
We report a study of Shubnikov-de Haas oscillations in high quality single crystals of ferromagnetic Weyl semimetal CoSnS. The Fermi surfaces resolved in our experiment…
Origin of spin reorientation and intrinsic anomalous Hall effect in the kagome ferrimagnet TbMn6Sn6
D. Connor Jones, Suvadip Das, Hari Bhandari +6
TbMnSn has attracted a lot of recent interest for a variety of reasons, most importantly, because of the hypothesis that it may support quantum-limit Chern topological magn…
Plethora of tunable Weyl fermions in kagome magnet Fe3Sn2 thin films
Zheng Ren, Hong Li, Shrinkhala Sharma +9
Interplay of magnetism and electronic band topology in unconventional magnets enables the creation and fine control of novel electronic phenomena. In this work, we use scanning tun…
Pressure-induced creation and annihilation of Weyl points in Td- and 1T"-Mo0.5W0.5Te2
Bishnu Karki, Bishnu Prasad Belbase, Gang Bahadur Acharya +2
By means of first-principles density-functional theory calculations, we investigate the role of hydrostatic pressure on the electronic structure of Td (Pmn21 ) and 1T" (Pm) phases…
Rhodium based half-Heusler alloys as possible optoelectronic and thermoelectric materials
Dhurba Raj Jaishi, Sujit Bati, Nileema Sharma +3
On the basis of density functional theory and semi-classical Boltzmann theory, we have investigated the structural, elastic, electronic, optical and thermoelectric properties of 18…
Ferromagnetic helical nodal line and Kane-Mele spin-orbit coupling in kagome metal Fe3Sn2
Shiang Fang, Linda Ye, Madhav Prasad Ghimire +8
The two-dimensional kagome lattice hosts Dirac fermions at its Brillouin zone corners K and K', analogous to the honeycomb lattice. In the density functional theory electronic stru…
Electronic Structure and Thermoelectric Properties of Half-Heusler Alloys NiTZ
Dhurba R. Jaishi, Nileema Sharma, Bishnu Karki +3
We have investigated the electronic and thermoelectric properties of half-Heusler alloys NiTZ (T = Sc, and Ti; Z = P, As, Sn, and Sb) having 18 valence electron. Calculations are p…
Room-temperature ferrimagnetism of anti-site-disordered Ca2MnOsO6
Hai L. Feng, Madhav Prasad Ghimire, Zhiwei Hu +18
Room-temperature ferrimagnetism was discovered for the anti-site-disordered perovskite Ca2MnOsO6 with Tc = 305 K. Ca2MnOsO6 crystallizes into an orthorhombic structure with a space…
Reentrant spin reorientation transition and Griffiths-like phase in antiferromagnetic TbFeCrO
Bhawana Mali, Harikrishnan S. Nair, T. W. Heitmann +6
The perovskite TbFeCrO shows two anomalies in the magnetic susceptibility at = 257K and = 190K which are respectively, the antiferromagnetic and…
Creating Weyl nodes and controlling their energy by magnetization rotation
Madhav Prasad Ghimire, Jorge I. Facio, Jhih-Shih You +6
As they do not rely on the presence of any crystal symmetry, Weyl nodes are robust topological features of an electronic structure that can occur at any momentum and energy. Acting…
Indole moiety induced biological potency in pseudo- peptides derived from 2-amino-2-(1H-indole-2-yl) based acetamides: synthesis, structure and computational investigations
Kollur Shiva Prasad, Renjith Raveendran Pillai, Madhav Prasad Ghimire +4
We report the synthesis and theoretical investigations of three novel pseudo-peptide molecules derived from 2-amino-2-(1H-indole-2-yl) acetamides. The compounds were subjected to s…
Chemical Gating of a Weak Topological Insulator: Bi14Rh3I9
Madhav Prasad Ghimire, Manuel Richter
The compound Bi14Rh3I9 has recently been suggested as a weak three-dimensional topological insulator on the basis of angle-resolved photoemission and scanning-tunneling experiments…
Ba2NiOsO6: A Dirac-Mott insulator with ferromagnetism near 100 K
Hai L. Feng, Stuart Calder, Madhav Prasad Ghimire +14
The ferromagnetic semiconductor Ba2NiOsO6 (Tmag ~100 K) was synthesized at 6 GPa and 1500 °C. It crystallizes into a double perovskite structure [Fm-3m; a = 8.0428(1) Å], where the…
Half Metal Transition Driven by Doping Effects in Osmium Double Perovskite
Madhav P. Ghimire, Xiao Hu
Using the first-principles density functional approach, we investigate CaFeOsO, a material of double perovskite structure synthesized recently. According to the calculation…
Half metallic ferromagnetism in tri-layered perovskites SrTO (T=Co, Rh)
Madhav P. Ghimire, R. K. Thapa, D. P. Rai +3
First-principles density functional theory (DFT) is used to investigate the electronic and magnetic properties of SrRhO, a member of the Ruddlesden-Popper series. Ba…
Possible Half Metallic Antiferromagnetism in a Double Perovskite Material with Strong Spin-Orbit Couplings
Madhav P. Ghimire, Long-Hua Wu, Xiao Hu
Using the first-principles density functional approach, we investigate a material PrMgIrO (PMIO) of double perovskite structure synthesized recently. According to the calcu…