Showing 15 results for Researcher: Thomas A. Maier
February 12, 2026
1 MIN READ
Scientific Achievement: Advanced simulations reveal that superconductivity in bilayer nickelates is driven by interlayer electron pairing mediated by interlayer spin fluctuations.Significance and Impact: Advanced simulations reveal that superconductivity in bilayer nickelates is driven by interlayer electron pairing mediated by interlayer spin fluctuations.DOI: 10.1038/s41535-026-00849-9
December 15, 2025
4 MIN READ
ORNL is beginning a four-year collaboration exploring the use of high-performance computing (HPC) to drive innovation around nonequilibrium quantum materials. This collaborative effort, Controlled Numerics for Emergent Transients in Nonequilibrium Quantum Matter will create an interdisciplinary research program to transform how scientists model and understand the complex behaviors and processes that happen when quantum materials are out of balance.
September 26, 2024
1 MIN READ
Scientific Achievement: Calculations predict that high-temperature (high-Tc) sign-switched s-wave superconductivity arises in trilayer La4Ni3O10 under pressure and can be enhanced by electron doping. Significance and Impact: Results provide guidance for the design of new Ni-oxide superconductors with higher Tc.DOI: 10.1103/PhysRevLett.133.136001
May 1, 2024
1 MIN READ
Scientific Achievement: Calculations predict that high-temperature (high-Tc) sign-switched s-wave superconductivity arises in La3Ni2O7 under pressure from the formation of bilayer dimers and striped spin fluctuations.Significance and Impact: Results reveal the nature of superconductivity in Ni oxides, a new family of high-Tc materials.DOI: 10.1038/s41467-024-46622-z
February 18, 2022
5 MIN READ
A study led by researchers at ORNL used the nation’s fastest supercomputer to close in on the answer to a central question of modern physics that could help conduct development of the next generation of energy technologies.
February 11, 2022
1 MIN READ
Scientific Achievement: Large-scale numerical calculations reveal fluctuating spin and charge stripes intertwined with pair-density-wave correlations in the doped Hubbard model.Significance and Impact: Results demonstrate that striped spin and charge density wave states survive in the Hubbard model in the thermodynamic limit and show how they affect the model’s superconducting behavior.DOI: 10.1073/pnas.2112806119
November 2, 2021
1 MIN READ
Scientific Achievement: Developed model-independent approach for entanglement quantification in quantum spin systems, using inelastic neutron scattering (INS) and density matrix renormalization group (DMRG) calculations. Significance and Impact: This work lays the foundation for a general entanglement detection protocol for quantum spin systems, which is needed to identify quantum materials suitable for new applications such as topological quantum computing.DOI: 10.1103/PhysRevLett.127.037201 ; DOI: 10.1103/PhysRevB.103.224434
March 17, 2021
1 MIN READ
Quantum Monte Carlo simulations reveal that Cooper pairs in the cuprate high-Tc superconductors are composed of electron holes on the Cu-d orbital and on the bonding molecular orbital constructed from the four surrounding O-p orbitals.
August 10, 2020
2 MIN READ
A team of ORNL researchers has used the DCA++ application, a popular code for predicting the performance of quantum materials, to verify two performance-enhancing strategies.
April 29, 2020
1 MIN READ
Scientific Achievement: Quantum Monte Carlo simulations of a two-dimensional Hubbard model reveal that the combined effects of a decreasing spin-fluctuation pairing interaction and weak impurity scattering lead to the abrupt overdoped end of the superconducting dome. Significance and Impact: Results provide new insight into the nature of the pairing mechanism that leads to superconductivity in the cuprate materials.DOI: 10.1103/PhysRevResearch.2.033132
November 21, 2018
5 MIN READ
Seven researchers from the Department of Energy’s Oak Ridge National Laboratory have been chosen by the Innovative and Novel Computational Impact on Theory and Experiment, also known as INCITE, program to lead scientific investigations that require the nation’s mo...
December 16, 2016
1 MIN READ