162 citations · 412 across the 13 of their papers we have counts for
13 papers
Magnon Orbital Angular Momentum of Ferromagnetic Honeycomb and Zig-Zag Lattices
R. S. Fishman, T. Berlijn, J. Villanova +1
By expanding the gauge for magnon band in harmonics of momentum , we demonstrate that the only observable component of the magnon orbital angular momen…
Universal sublinear resistivity in vanadium kagome materials hosting charge density waves
Shirin Mozaffari, William R. Meier, Richa P. Madhogaria +14
The recent discovery of a charge density (CDW) state in ScVSn at = 91 K offers new opportunities to understand the origins of electronic instabilities in…
Emergence of a new band and the Lifshitz transition in kagome metal ScVSn with charge density wave
Seoung-Hun Kang, Haoxiang Li, William R. Meier +10
Topological kagome systems have been a topic of great interest in condensed matter physics due totheir unique electronic properties. The vanadium-based kagome materials are particu…
Spin wave Hamiltonian and anomalous scattering in NiPS
A. Scheie, Pyeongjae Park, J. W. Villanova +8
We report a comprehensive spin wave analysis of the semiconducting honeycomb van der Waal antiferromagnet NiPS. Using single crystal inelastic neutron scattering, we map out th…
Elasticity of 2D ferroelectrics across their paraelectric phase transformation
Joseph E. Roll, John M. Davis, John W. Villanova +1
The mechanical behavior of two-dimensional (2D) materials across 2D phase changes is unknown, and the finite temperature () elasticity of paradigmatic SnSe monolayers -- ferroel…
Magnetic Topological Semimetal Phase with Electronic Correlation Enhancement in SmSbTe
Krishna Pandey, Debashis Mondal, John William Villanova +14
The ZrSiS family of compounds hosts various exotic quantum phenomena due to the presence of both topological nonsymmorphic Dirac fermions and nodal-line fermions. In this material…
Thermoelectricity of Tin Selenide Monolayers Across a Structural Phase Transition
John W. Villanova, Salvador Barraza-Lopez
SnSe monolayers experience a temperature induced two-dimensional Pnm2 P4/nmm structural transformation precipitated by the softening of vibrational modes. The standard theo…
Colloquium: Physical properties of group-IV monochalcogenide monolayers
Salvador Barraza-Lopez, Benjamin M. Fregoso, John W. Villanova +2
We survey the state-of-the-art knowledge of ferroelectric and ferroelastic group-IV monochalcogenide monolayers. These semiconductors feature remarkable structural and mechanical p…
Topology of atomically thin soft ferroelectric membranes at finite temperature
John W. Villanova, Pradeep Kumar, Salvador Barraza-Lopez
One account of two-dimensional (2D) structural transformations in 2D ferroelectrics predicts an evolution from a structure with Pnm2 symmetry into a structure with square P4/nm…
Group-IV monochalcogenide monolayers: two-dimensional ferroelectrics with weak intra-layer bonds and a phosphorene-like monolayer dissociation energy
Shiva P. Poudel, John W. Villanova, Salvador Barraza-Lopez
We performed density functional theory calculations with self-consistent van der Waals corrected exchange-correlation (XC) functionals to capture the structure of black phosphorus…
Zeeman-splitting-induced Topological Nodal Structure and Anomalous Hall Conductivity in ZrTe
Yichul Choi, John W. Villanova, Kyungwha Park
We investigate the topological nodal structure of three-dimensional (3D) ZrTe driven by Zeeman splitting as a function of the direction of external magnetic (B) field by using…
Magnetic Field Induced Weyl Semimetal from Wannier-Function-based Tight-Binding Model
John W. Villanova, Kyungwha Park
Weyl semimetals (WSMs) have Weyl nodes where conduction and valence bands meet in the absence of inversion or time-reversal symmetry (TRS), or both. Interesting phenomena are expec…
Engineering and probing topological properties of Dirac semimetal films by asymmetric charge transfer
John W. Villanova, Edwin Barnes, Kyungwha Park
Dirac semimetals (DSMs) have topologically robust three-dimensional Dirac (doubled Weyl) nodes with Fermi-arc states. In heterostructures involving DSMs, charge transfer occurs at…