137 citations · 270 across the 9 of their papers we have counts for
9 papers
Critical Temperatures from Domain-Wall Microstate Counting: A Topological Solution for the Potts Universality Class
David Vaknin
We derive a universal relation for the critical temperatures of the -state Potts model based on the counting of domain-wall microstates. By balancing interface energy against co…
Temperature as a Dynamically Maintained Steady State: Photonic Mechanisms, Maintenance Cost, and the Limits of the Infinite-Reservoir Idealization
David Vaknin
Classical thermodynamics treats temperature as a state variable characterizing systems in equilibrium with idealized infinite reservoirs. We argue that this framing, while computat…
Spiral Spin Liquid State in the Corrugated Honeycomb Lattice of CaMnP
Farhan Islam, Nikita D. Andriushin, Thaís V. Trevisan +9
CaMnP exemplifies the realization of a frustrated -- Heisenberg model of a corrugated honeycomb magnetic lattice. Previous studies show that below the Néel t…
Spin dynamics in itinerant antiferromagnet SrCrAs
Zhenhua Ning, Pinaki Das, Y. Lee +6
SrCrAs is an itinerant antiferromagnet in the same structural family as the SrFeAs high-temperature superconductors. We report our calculations of exchange-coupling…
Competing magnetic interactions in the antiferromagnetic topological insulator MnBiTe
J. -Q. Yan, D. Pajerowski, Liqin Ke +6
The antiferromagnetic (AF) compound MnBiTe is suggested to be the first realization of an antiferromagnetic (AF) topological insulator. Here we report on inelastic neut…
Stripe Antiferromagnetic Spin Fluctuations in SrCoAs
W. Jayasekara, Y. Lee, Abhishek Pandey +12
Inelastic neutron scattering measurements of paramagnetic SrCoAs at T=5 K reveal antiferromagnetic (AFM) spin fluctuations that are peaked at a wavevector of $\textbf{Q…
Magnetic excitations in underdoped Ba(Fe1-xCox)2As2 with x=0.047
G. S. Tucker, R. M. Fernandes, H. -F. Li +8
The magnetic excitations in the paramagnetic-tetragonal phase of underdoped Ba(Fe0.953Co0.047)2As2, as measured by inelastic neutron scattering, can be well described by a phenomen…
Level crossings and zero-field splitting in the \{Cr\}-cubane spin-cluster by inelastic neutron scattering and magnetization studies
D. Vaknin, V. O. Garlea, F. Demmel +10
Inelastic neutron scattering in variable magnetic field and high-field magnetization measurements, at the milikelvin temperature range, were performed to gain insight into the low-…
Phase transitions and iron-ordered moment form factor in LaFeAsO
H. -F. Li, W. Tian, J. -Q. Yan +4
Elastic neutron scattering studies of an optimized LaFeAsO single crystal reveal that upon cooling, an onset of the tetragonal (T)-to-orthorhombic (O) structural transition occurs…