Materials Theory Group at UNF

Research by Dr. J.T. Haraldsen

 

2016 - Photo Contest

 

2017 - Photo Contest 


Workshop on 2D and Dirac Materials

 

Workshop on the Advances in Dirac and Weyl Materials 

 

New Class - Discovering Physics!



Dr. Haraldsen works on theoretical and computational condensed matter physics, where he utilizes various techniques that are centered around exact diagonalization, phenomenological, mean-field, and density functional methods and approaches. Overall, he is interested in investigating the complex states and competing interactions between charge, spin, and lattice degrees of freedom in magnetic and charge-order materials. Recently, Dr. Haraldsen has been working on understanding the interactions at complex oxide interfaces for multilayers as well as surface states and magnetoelectric transport in 2D and Dirac materials. The overall goal is to model and predict materials that have the potential to be utilized for applications within spintronic and multiferroic devices. 

 

 

 

 

Looking to do research in theoretical or computational condensed matter physics, then please email Dr. Haraldsen


 UNF MT
 

Recent Publications

Dirac nodes and magnetic order in M2X2 transition-metal chalcogenides, T. LaMartina, J.-X Zhu, A.V.Balatsky, and J. T. Haraldsen, Physica Status Solidi, 18000181 (2018).

 

 

The manifold of degenerate states and excitations due to release of magnetic frustration in the almost Heisenberg pyrochlore antiferromagnet MgCr2O4, S. Gao, Guratinder kaur, U. Stuhr, J. White, B. Roessli, T. Fennell, Ch. Ruegg, V. Tsurkan, A. Loidl, G. Balakrishnan, M. Ciomaga-Hatnean, S. Raymond, V. Garlea, A. Savici, M. Mansson, A. Cervellino, A. Bombardi, D. Chernyshov, J. T. Haraldsen, and O. Zaharko, Physical Review B 97, 134430 (2018).

 

 

Magnetic Dirac Bosons in the Honeycomb Lattice, D. Boyko, A. V. Balatsky, and J. T. Haraldsen, Physical Review 97, 014433 (2018).

 

 

Spatial dependence of super-exchange interactions for transition-metal trimers in graphene, Charles B. Crook, Gregory Houchins, Costel Constantin, Jian-Xin Zhu, Alexander V. Balatsky, and J. T. Haraldsen, Journal of Applied Physics 123, 013903 (2018).

 

Electronic chirality in the electronic structure of ferromagnetic Fe1/3-TaS2, S.  Fan, I.  Manuel, Amal  al-Wahish, K.  A.  Smith, K.  R.  O'Neal, Y.  Horibe, S.  W.  Cheong, J. T. Haraldsen, and  J.  L.  Musfeldt, Physical Review B 96, 205119 (2017).

 

 

Voltage-dependent spin flip in magnetically substituted graphene nanoribbons: Towards the realization of graphene-based spintronic devices, Gregory Houchins, Charles B. Crook, Jian-Xin Zhu, Alexander V. Balatsky, and J. T. Haraldsen, Physical Review B 95, 155450 (2017).}

 

 

Cyclic E2 and P4 on Alzheimer's Disease Pathways, T.S. Wiley and J. T. Haraldsen, Advances in Alzheimer's Disease 6, 32 (2017).

 

 

Evolution of thermodynamic properties and inelastic neutron scattering intensities for spin-1/2 antiferromagnetic quantum rings,  J. T. Haraldsen, Physical Review B 94, 054436 (2016).

 

 

H1R Antagonists for Brain Inflammation and Anxiety: Targeted Treatment for Autism Spectrum Disorders, T.S. Wiley and J. T. Haraldsen, Journal of Pharmaceutics and Drug Delivery Research 4, 1000136 (2015).

 

Current Funding

Understanding Magnetic Dirac Materials -  Institute for Materials Science at Los Alamos National Laboratory (2015-Present) 


  
 

Ongoing Collaborations 

  • Institute for Materials Science, Los Alamos National Laboratory, New Mexico
  • Center for Integrated Nanotechnologies, Los Alamos National Laboratory, Los Alamos, New Mexico
  • University of Tennessee, Knoxville, Tennessee
  • Florida State University, Tallahassee, Florida
  • Paul Scherrer Institut, Villigen, Switzerland