26 citations · 95 across the 11 of their papers we have counts for
11 papers
Effect of random antiferromagnetic exchange on the spin waves in a three-dimensional Heisenberg ferromagnet
S. Hameed, Z. Wang, D. M. Gautreau +12
Neutron scattering is used to study spin waves in the three-dimensional Heisenberg ferromagnet YTiO, with spin-spin exchange disorder introduced La-substitution at the Y…
Strain effect on the ground-state structure of Sr2SnO4 Ruddlesden-Popper oxides
Hwanhui Yun, Dominique Gautreau, K. Andre Mkhoyan +1
Ruddlesden-Popper (RP) oxides (ABO) comprised of perovskite (ABO) slabs can host a wider variety of structural distortions than their perovskite counte…
Room-Temperature Valence Transition in a Strain-Tuned Perovskite Oxide
Vipul Chaturvedi, Supriya Ghosh, Dominique Gautreau +17
Cobalt oxides have long been understood to display intriguing phenomena known as spin-state crossovers, where the cobalt ion spin changes vs. temperature, pressure, etc. A very dif…
Uniaxial strain control of bulk ferromagnetism in rare-earth titanates
Ana Najev, Sajna Hameed, Dominique M. Gautreau +7
The perovskite rare-earth titanates are model Mott insulators with magnetic ground states that are very sensitive to structural distortions. These distortions couple strongly to th…
Strain-tunable metamagnetic critical endpoint in Mott insulating rare-earth titanates
Zhentao Wang, Dominique Gautreau, Turan Birol +1
Rare-earth titanates are Mott insulators whose magnetic ground state -- antiferromagnetic (AFM) or ferromagnetic (FM) -- can be tuned by the radius of the rare-earth element. Here,…
Two-component electronic phase separation in the doped Mott insulator YCaTiO
S. Hameed, J. Joe, D. M. Gautreau +3
One of the major puzzles in condensed matter physics has been the observation of a Mott-insulating state away from half-filling. The filling-controlled Mott insulator-metal transit…
First-principles characterization of the magnetic properties of Cu(OH)Br
Dominique M. Gautreau, Amartyajyoti Saha, Turan Birol
Low dimensional spin-1/2 transition metal oxides and oxyhalides continue to be at the forefront of research investigating nonclassical phases such as quantum spin liquids. In this…
Coexistence and interaction of spinons and magnons in an antiferromagnet with alternating antiferromagnetic and ferromagnetic quantum spin chains
H. Zhang, Z. Zhao, D. Gautreau +10
In conventional quasi-one-dimensional antiferromagnets with quantum spins, magnetic excitations are carried by either magnons or spinons in different energy regimes: they do not co…
Doping-induced magnetism in the semiconducting B20 compound RuGe
Mojammel A. Khan, D. P. Young, P. W. Adams +5
RuGe, a diamagnetic small-band gap semiconductor, and CoGe, a nonmagnetic semimetal, are both isostructural to the Kondo insulator FeSi and the skyrmion lattice host MnSi. Here, we…
Trapped imbalanced fermionic superfluids in one dimension: A variational approach
Kelly R. Patton, Dominique M. Gautreau, Stephen Kudla +1
We propose and analyze a variational wave function for a population-imbalanced one-dimensional Fermi gas that allows for Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) type pairing correl…
Pairing correlations in a trapped one-dimensional Fermi gas
Stephen Kudla, Dominique M. Gautreau, Daniel E. Sheehy
We use a BCS-type variational wavefunction to study attractively-interacting quasi one-dimensional (1D) fermionic atomic gases, motivated by cold-atom experiments that access the 1…