A. Subedi

activity

20172025

most citedOrthorhombic-to-monoclinic transition in Ta

_{2}

NiSe

_{5}

due to a zone-center optical phonon instability

51 citations · 102 across the 14 of their papers we have counts for

collaborators

15 papers

cond-mat.mtrl-sci2025

Octahedral rotation instability in Ba $_{2}$ IrO $_{4}$

Alaska Subedi

Ba $_{2}$ IrO $_{4}$ has been refined in the tetragonal $I 4/ mmm$ phase without octahedral rotations, and its physical properties have been interpreted in this high-symmetry structure. How…

cond-mat.supr-con2024

Pressure-tunable structural instabilities in single-layer-trilayer La $_{3}$ Ni $_{2}$ O $_{7}$

Alaska Subedi

Layered nickelates are believed to exhibit superconductivity similar to that found in the cuprates. However, the precise crystal structure of the superconducting phase of the layer…

cond-mat.mtrl-sci2024

Impact of hole-doping on the thermoelectric properties of pyrite FeS2

Anustup Mukherjee, Alaska Subedi

We present a comprehensive first-principles analysis of the thermoelectric transport properties of hole-doped pyrite FeS $_{2}$ that includes electron-phonon interactions. This work w…

cond-mat.mtrl-sci2024★ 2 cited

Deep-lying semi-Dirac fermions in hexagonal close-packed cadmium

Alaska Subedi, Kamran Behnia

Semi-Dirac fermions are massless in one direction and massive in the perpendicular directions. Such quasiparticles have been proposed in various contexts in condensed matter. Using…

cond-mat.mtrl-sci2023★ 5 cited

Thermoelectric transport properties of electron doped pyrite FeS2

Anustup Mukherjee, Alaska Subedi

Pyrite FeS $_{2}$ has been investigated for a wide range of applications, including thermoelectrics due to previous observation of large thermopower at room-temperature. However, the…

cond-mat.mtrl-sci2023★ 4 cited

Minority-spin conducting states in Fe substituted pyrite CoS $_{2}$

Anustup Mukherjee, Alaska Subedi

There has been a longstanding debate whether the pyrite CoS $_{2}$ or its alloys with FeS $_{2}$ are half metallic. We argue using first principles calculations that there is a finite oc…

cond-mat.mtrl-sci2023★ 1 cited

Transient translation symmetry breaking via quartic-order negative light-phonon coupling at the Brillouin zone boundary in KTaO $_{3}$

Adrián Gómez Pueyo, Alaska Subedi

KTaO $_{3}$ presents a rich hyper-Raman spectrum originating from two-phonon processes at the Brillouin zone boundary, indicating the possibility of driving these phonon modes usi…

cond-mat.mtrl-sci2022★ 6 cited

Light-induced translation symmetry breaking via nonlinear phononics

Adrián Gómez Pueyo, Alaska Subedi

Light has a wavelength that is usually longer than the size of the unit cell of crystals. Hence, even intense light pulses are not expected to break the translation symmetry of mat…

cond-mat.mtrl-sci2021

Hexagonal-to-base-centered-orthorhombic $4 Q$ charge density wave order in kagome metals KV $_{3}$ Sb $_{5}$ , RbV $_{3}$ Sb $_{5}$ , and CsV $_{3}$ Sb $_{5}$

Alaska Subedi

I search for the ground state structures of the kagome metals KV $_{3}$ Sb $_{5}$ , RbV $_{3}$ Sb $_{5}$ , and CsV $_{3}$ Sb $_{5}$ using first principles calculations. Group-theoretical analysis shows t…

cond-mat.mtrl-sci2021★ 11 cited

Trigonal-to-monoclinic structural transition in TiSe $_{2}$ due to a combined condensation of $q = (\frac{1}{2}, 0, 0)$ and $(\frac{1}{2}, 0, \frac{1}{2})$ phonon instabilities

Alaska Subedi

I present first principles calculations of the phonon dispersions of TiSe $_{2}$ in the $P 3 c 1$ phase, which is the currently accepted low-temperature structure of this mate…

cond-mat.str-el2020★ 51 cited

Orthorhombic-to-monoclinic transition in Ta $_{2}$ NiSe $_{5}$ due to a zone-center optical phonon instability

Alaska Subedi

I study dynamical instabilities in Ta $_{2}$ NiSe $_{5}$ using density functional theory based calculations. The calculated phonon dispersions show two unstable optical branches. All the…

cond-mat.mtrl-sci2018

Observation of Poiseuille Flow of Phonons in Black Phosphorus

Yo Machida, Alaska Subedi, Kazuto Akiba +5

The travel of heat in insulators is commonly pictured as a flow of phonons scattered along their individual trajectory. In rare circumstances, momentum-conserving collision events…

cond-mat.str-el2017★ 14 cited

Breathing distortions in the metallic, antiferromagnetic phase of LaNiO $_{3}$

Alaska Subedi

I study the structural and magnetic instabilities in LaNiO $_{3}$ using density functional theory calculations. From the non-spin-polarized structural relaxations, I find that several…

cond-mat.str-el2017★ 6 cited

Mott-to-Goodenough insulator-insulator transition in LiVO $_{2}$

Alaska Subedi

I critically examine Goodenough's explanation for the experimentally observed phase transition in LiVO $_{2}$ using microscopic calculations based on density functional and dynamical…

cond-mat.str-el2017★ 2 cited

Modulated, three-directional, and polar structural instability in layered $d^{1}$ NaTiO $_{2}$

Alaska Subedi

I study the experimentally observed metal-to-metal structural phase transition in NaTiO $_{2}$ using density functional calculations. I do not find the previously proposed low-tempera…

Octahedral rotation instability in Ba2​IrO4​

Pressure-tunable structural instabilities in single-layer-trilayer La3​Ni2​O7​

Impact of hole-doping on the thermoelectric properties of pyrite FeS2

Deep-lying semi-Dirac fermions in hexagonal close-packed cadmium

Thermoelectric transport properties of electron doped pyrite FeS2

Minority-spin conducting states in Fe substituted pyrite CoS2​

Transient translation symmetry breaking via quartic-order negative light-phonon coupling at the Brillouin zone boundary in KTaO3​

Light-induced translation symmetry breaking via nonlinear phononics

Hexagonal-to-base-centered-orthorhombic 4Q charge density wave order in kagome metals KV3​Sb5​, RbV3​Sb5​, and CsV3​Sb5​

Trigonal-to-monoclinic structural transition in TiSe2​ due to a combined condensation of q=(21​,0,0) and (21​,0,21​) phonon instabilities

Orthorhombic-to-monoclinic transition in Ta2​NiSe5​ due to a zone-center optical phonon instability

Observation of Poiseuille Flow of Phonons in Black Phosphorus

Breathing distortions in the metallic, antiferromagnetic phase of LaNiO3​

Mott-to-Goodenough insulator-insulator transition in LiVO2​

Modulated, three-directional, and polar structural instability in layered d1 NaTiO2​

Octahedral rotation instability in Ba $_{2}$ IrO $_{4}$

Pressure-tunable structural instabilities in single-layer-trilayer La $_{3}$ Ni $_{2}$ O $_{7}$

Minority-spin conducting states in Fe substituted pyrite CoS $_{2}$

Transient translation symmetry breaking via quartic-order negative light-phonon coupling at the Brillouin zone boundary in KTaO $_{3}$

Hexagonal-to-base-centered-orthorhombic $4 Q$ charge density wave order in kagome metals KV $_{3}$ Sb $_{5}$ , RbV $_{3}$ Sb $_{5}$ , and CsV $_{3}$ Sb $_{5}$

Trigonal-to-monoclinic structural transition in TiSe $_{2}$ due to a combined condensation of $q = (\frac{1}{2}, 0, 0)$ and $(\frac{1}{2}, 0, \frac{1}{2})$ phonon instabilities

Orthorhombic-to-monoclinic transition in Ta $_{2}$ NiSe $_{5}$ due to a zone-center optical phonon instability

Breathing distortions in the metallic, antiferromagnetic phase of LaNiO $_{3}$

Mott-to-Goodenough insulator-insulator transition in LiVO $_{2}$

Modulated, three-directional, and polar structural instability in layered $d^{1}$ NaTiO $_{2}$