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International Conference on Algorithms and Applications for Excited State Electronic Structure Theories
Excited state electronic structure theory condensed matter physics
2016/7/22
Excited state electronic structure theory is one of the most active research fields in condensed matter physics and quantum chemistry, and plays a critical role in understanding electronic and optical...
First self-assembled superconductor structure created
self-assembled superconductor structure
2016/2/22
Building on nearly two decades’ worth of research, a multidisciplinary team at Cornell has blazed a new trail by creating a self-assembled, three-dimensional gyroidal superconductor.Ulrich Wiesner, th...
Longstanding bottleneck in crystal structure prediction solved
Longstanding bottleneck crystal structure prediction solved
2014/10/9
The various patterns that atoms of a solid material can adopt, called crystal structures, can have a huge impact on its properties. Being able to accurately predict the most stable crystal structure f...
Tuning magnetism in FeAs-based materials via tetrahedral structure
Tuning magnetism FeAs-based materials tetrahedral structure
2012/2/27
Resistivity, magnetic susceptibility, neutron scattering and x-ray crystallography measurements were used to study the evolution of magnetic order and crystallographic structure in single-crystal samp...
Fine structure of "zero-mode" Landau levels in HgTe/HgCdTe quantum wells
Fine structure；HgTe/HgCdTe quantum wells
2010/11/25
HgTe/HgCdTe quantum wells with the inverted band structure have been probed using far infrared
magneto-spectroscopy. Realistic calculations of Landau level diagrams have been performed to
identify t...
Direct correlation of crystal structure and optical properties in wurtzite/zinc-blende GaAs nanowire heterostructures
Direct correlation of crystal structure optical properties
2010/11/25
A novel method for the direct correlation at the nanoscale of structural and optical properties
of single GaAs nanowires is reported. Nanowires consisting of 100% wurtzite and nanowires presenting zi...
Robust Level Coincidences in the Subband Structure of Quasi 2D Systems
Robust Level Coincidences Subband Structure of Quasi 2D Systems
2010/11/24
Recently, level crossings in the energy bands of crystals have been identified as a key signature for topological phase transitions. In general, three independent parameters must be tuned appropriatel...
Spin and Charge Fluctuations in the $\alpha$-structure Layered Nitride Superconductors
Spin Charge Fluctuations alpha$-structure Layered Nitride Superconductors
2010/11/24
To explore conditions underlying the superconductivity in electron-doped TiNCl where Tc = 16
K, we calculate the electronic structure, Wannier functions and spin and charge usceptibilities
using rs...
Tricritical point and wing structure in the itinerant ferromagnet UGe2
Tricritical point wing structure itinerant ferromagnet UGe2
2010/11/17
Precise resistivity measurements on the ferromagnetic superconductor UGe2 under pressure p and
magnetic field H reveal a previously unobserved change of the anomaly at the Curie temperature.
Therefo...
Electronic structure of an antiferromagnetic metal: CaCrO3
Electronic structure antiferromagnetic metal: CaCrO3
2010/11/19
We report on the electronic structure of the perovskite oxide CaCrO3 using valence-band, corelevel,and Cr 2p − 3d resonant photoemission spectroscopy (PES). Despite its antiferromagnetic order, ...
Local electronic structure of Fe$^{2+}$ impurities in MgO thin films: Temperature-dependent soft x-ray absorption spectroscopy study
Local electronic structure of Fe$^{2+}$ impurities Temperature-dependent soft x-ray absorption spectroscopy study
2010/11/18
We report on the local electronic structure of Fe impurities in MgO thin films. Using soft x-ray absorption spectroscopy (XAS) we verified that the Fe impurities are all in the 2+ valence state.The fi...
Temporal behavior of the inverse spin Hall voltage in a magnetic insulator-nonmagnetic metal structure
Temporal behavior inverse spin Hall voltage magnetic insulator-nonmagnetic metal structure
2010/11/18
The time dependence of an inverse spin Hall (iSHE) voltage in a magnetic insulator (yttrium
iron garnet, YIG)-nonmagnetic metal (platinum, Pt) structure is studied. A flow of spin-polarized electrons...
On the multi-orbital band structure and itinerant magnetism of iron-based superconductors
Fe-based superconductors Electronic Structure Tight-Binding Downfolding
2010/11/18
This paper explains the multi-orbital band structures and itinerant magnetism of the iron-pnictide and chalcogenide superconductors. We first describe the generic band structure of a single, isolated ...
Flavor structure of the baryon-baryon interaction from lattice QCD
investigate baryon-baryon (BB) interactions 3-flavor full QCD simulations degenerate
2011/1/13
We investigate baryon-baryon (BB) interactions in the 3-flavor full QCD simulations with degenerate quark masses for all flavors. The BB potentials in the orbital S-wave are extracted from the Nambu-B...
Nucleon structure from RBC/UKQCD 2+1 flavor DWF dynamical ensembles at a nearly physical pion mass
Nucleon structure RBC/UKQCD 2+1 flavor DWF dynamical ensembles nearly physical pion mass
2011/1/13
We report the status of nucleon structure calculations on the (2+1)-flavor dynamical domainwall
fermions ensembles with pion masses as low as 180 and 250 MeV on a lattice with about 4.6 fm spatial ex...