Dr. rer. nat. Florian Lange

Erlangen National High-Performance Computing Center (NHR@FAU)

Research associates

Address

Martensstraße 1 91058 Erlangen

Contact

Email: florian.lange@fau.de

Short Bio

Florian Lange holds a master's degree and a PhD in Theoretical Physics from the University of Greifswald. For his PhD thesis, he received the doctoral award of the Faculty of Mathematics and Natural Sciences. In 2022, he joined the NHR@FAU Training & Support Division as a domain expert for physics. His research interests are low-dimensional condensed matter systems, tensor network methods and quantum computing.

2025

Lacey D., Alappat C., Lange F., Hager G., Fehske H., Wellein G.:
Cache blocking of distributed-memory parallel matrix power kernels
In: International Journal of High Performance Computing Applications 39 (2025), p. 385-404
ISSN: 1094-3420
DOI: 10.1177/10943420251319332
Lange F., Heunisch L., Fehske H., DiVincenzo DP., Hartmann M.:
Cross-talk in superconducting qubit lattices with tunable couplers – comparing transmon and fluxonium architectures
In: Quantum Science and Technology 11 (2025), p. 015020
ISSN: 2058-9565
DOI: 10.1088/2058-9565/ae2358

2024

Lange F., Fehske H.:
Metal-insulator transition of spinless fermions coupled to dispersive optical bosons
In: Scientific Reports 14 (2024), Article No.: 18050
ISSN: 2045-2322
DOI: 10.1038/s41598-024-68811-y
Lange F., Wellein G., Fehske H.:
Charge-order melting in the one-dimensional Edwards model
In: Physical Review Research 6 (2024), Article No.: L022007
ISSN: 2643-1564
DOI: 10.1103/PhysRevResearch.6.L022007

2023

Ejima S., Lange F., Fehske H.:
Entanglement analysis of photoinduced η -pairing states
In: European Physical Journal - Special Topics (2023)
ISSN: 1951-6355
DOI: 10.1140/epjs/s11734-023-00975-6

2022

Ejima A., Lange F., Fehske H.: Photoinduced metallization of excitonic insulators In: Physical Review B 105 (2022), Article No.: 245126 ISSN: 2469-9969 DOI: https://doi.org/10.1103/PhysRevB.105.245126

Ejima A., Lange F., Fehske H.: Nonequilibrium dynamics in pumped Mott insulators In: Physical Review Research 4 (2022), Article No.: L012012 ISSN: 2643-1564 DOI: https://doi.org/10.1103/PhysRevResearch.4.L012012

2021

Ejima S., Lange F., Fehske H.: Quantum criticality in dimerised anisotropic spin-1 chains In: The European Physical Journal Special Topics 230 (2021), Article No.: 1009 ISSN: 1951-6401 DOI: https://doi.org/10.1140/epjs/s11734-021-00060-w

Fujimoto J., Lange F., Ejima S., Shirakawa T., Fehske H., Yunoki S., Maekawa S.: Spin-charge conversion and current vortex in spin-orbit coupled systems In: APL Materials 9 (2021), Article No.: 060904 ISSN: 2166-532X DOI: https://doi.org/10.1063/5.0049882

Lange F., Ejima S., Fujimoto J., Shirakawa T., Fehske H., Yunoki S., Maekawa S.: Generation of current vortex by spin current in Rashba systems In: Physical Review Letters 126 (2021), Article No.: 157202 ISSN: 1079-7114 DOI: https://link.aps.org/doi/10.1103/PhysRevLett.126.157202

Ejima S., Lange F., Fehske H.: Finite-temperature photoemission in the extended Falicov-Kimball model: a case study for Ta2NiSe5 In: SciPost Physics 10 (2021), Article No.: 077 ISSN: 2542-4653 DOI: https://doi.org/10.21468/SciPostPhys.10.3.077

2020

Ejima S., Kaneko T., Lange F., Yunoki S., Fehske H.: Photoinduced η-pairing at finite temperatures In: Physical Review Research 2 (2020), Article No.: 032008(R) ISSN: 2643-1564 DOI: https://link.aps.org/doi/10.1103/PhysRevResearch.2.032008

Ejima S., Kaneko T., Lange F., Yunoki S., Fehske H.: Photoinduced η-pairing in one-dimensional Mott insulators In: JPS Conference Proceedings 30 (2020), Article No.: 011184 ISSN: 2435-3892 DOI: https://doi.org/10.7566/JPSCP.30.011184

Lange F., Ejima S., Shirakawa T., Yunoki S., Fehske H.: Block-Lanczos density-matrix renormalization-group approach to spin transport in Heisenberg chains coupled to leads In: Journal of the Physical Society of Japan 89 (2020), Article No.: 044601 ISSN: 1347-4073 DOI: https://doi.org/10.7566/JPSJ.89.044601

Lange F., Ejima S., Fehske H.: Dynamic response of spin-2 bosons in one-dimensional optical lattices In: Physical Review A 100 (2019), Article No.: 023623 ISSN: 2469-9934 DOI: https://doi.org/10.1103/PhysRevA.100.023623

2019

Sugimoto K., Ejima S., Lange F., Fehske H.: Quantum phase transitions in the dimerized extended Bose-Hubbard model In: Physical Review A 99 (2019), Article No.: 012122 ISSN: 2469-9934 DOI: https://link.aps.org/doi/10.1103/PhysRevA.99.012122

Lange F., Ejima S., Fehske H.: Driving XXZ spin chains: Magnetic-field and boundary effects In: EPL 125 (2019), Article No.: 17001 ISSN: 1286-4854 DOI: https://iopscience.iop.org/article/10.1209/0295-5075/125/17001/pdf

2018

Ejima S., Yamaguchi T., H. F., Lange F., Ohta Y., H. H.: Exotic criticality in the dimerized spin-1 XXZ chain with single-ion anisotropy In: SciPost Physics 5 (2018), Article No.: 059 ISSN: 2542-4653 DOI: https://doi.org/10.21468/SciPostPhys.5.6.059

Lange F., Ejima S., Shirakawa T., Yunoki S., Fehske H.: Spin transport through a spin-1/2 XXZ chain contacted to fermionic leads In: Physical Review B 97 (2018), Article No.: 245124 ISSN: 2469-9969 DOI: https://link.aps.org/doi/10.1103/PhysRevB.97.245124

Lange F., Ejima S., Fehske H.: Finite-temperature dynamic structure factor of the spin-1 XXZ chain with single-ion anisotropy In: Physical Review B 97 (2018), Article No.: 060403(R) ISSN: 2469-9969 DOI: https://link.aps.org/doi/10.1103/PhysRevB.97.060403

Ejima S., Lange F., Essler F. H. L., Fehske H.: Critical behavior of the extended Hubbard model with bond dimerization In: Physica B 536 (2018), Article No.: 474 ISSN: 1873-2135 DOI: https://doi.org/10.1016/j.physb.2017.09.001

2017

Lange F., Ejima S., Fehske H.: Strongly repulsive anyons in one dimension In: Physical Review A 95 (2017), Article No.: 063621 ISSN: 2469-9934 DOI: https://doi.org/10.1103/PhysRevA.95.063621

Lange F., Ejima S., Fehske H.: Anyonic Haldane insulator in one dimension In: Physical Review Letters 118 (2017), Article No.: 120401 ISSN: 1079-7114 DOI: https://doi.org/10.1103/PhysRevLett.118.120401

< 2017

Ejima S., Essler F., Lange F., Fehske H.: Ising tricriticality in the extended Hubbard model with bond dimerization In: Physical Review B 93 (2016), Article No.: 235118 ISSN: 2469-9969 DOI: https://doi.org/10.1103/PhysRevB.93.235118

Lange F., Ejima S., Fehske H.: Criticality at the Haldane-insulator charge-density-wave quantum phase transition In: Physical Review B 92 (2015), Article No.: 041120 ISSN: 2469-9969 DOI: https://doi.org/10.1103/PhysRevB.92.041120

Ejima S., Lange F., Fehske H.: Spectral and Entanglement Properties of the Bosonic Haldane Insulator In: Physical Review Letters 113 (2014), Article No.: 020401 ISSN: 1079-7114 DOI: https://doi.org/10.1103/PhysRevLett.113.020401

Ejima S., Lange F., Fehske H., Gebhard F., zu Münster K.: One-dimensional Bose-Hubbard model with local three-body interactions In: Physical Review A 88 (2013), Article No.: 063625 ISSN: 2469-9934 DOI: https://doi.org/10.1103/PhysRevA.88.063625