Publications

A full PDF of my publications can be found here.

R. Schäfer
Magnetic frustration in three dimensions
Dissertation published via TU Dresden (2022)

A. Sanders, G. Naik, J. Hallén, R. Schäfer
Defect Poisoning of Quantum Spin Ice
arXiv:2609.28643 (2026)
J. S. Herz, R. Schäfer, M. G. Gonzalez, D, J. Luitz
Sign-optimized Quantum Monte Carlo
arXiv:2607.24679 (2026)
R. Raman, R. Schäfer, A. J. Kollar, A. Chandran
— shared first authorship
Dissipative Stabilization of Floquet-Engineered Many-Body Order
arXiv:2607.16391 (2026)
E. M. Smith, M. S. Powell, R. Schäfer et al.
Zero-Field Long Range Order at T ~ 40 mK in the Proximate Quantum Spin Ice Ce\(_2\)Sn\(_2\)O\(_7\) and Phase Diagram for Magnetic Fields Along [1,1,0]
arXiv:2607.12274 (2026)
B. Yuan, M. Powell, X. Liu, J. Ni, E. M. Smith, R. Schäfer et al.
Observation of Dipolar Spin-ice-like Correlations in the Quantum Spin Ice Candidate Ce\(_2\)Sn\(_2\)O\(_7\)
arXiv:2601.20766 (2026)
R. Schäfer, C. Chamon, C. R. Laumann
Hall-on-Toric: Descendant Laughlin state in the chiral \(\mathbb{Z}_p\) toric code
Phys. Rev. Lett. 136, 166603 (2026)
R. Schäfer, P. Ebert, N. Hassan, J. Reuther, D. Luitz, A. Wietek
Thermodynamics of the Heisenberg antiferromagnet on the maple-leaf lattice
Zeitschrift für Naturforschung A. (zna-2025-0382) — special issue in memory of Johannes Richter

H. Kim, R. Schäfer, D. M. Long, A. Polkovnikov, A. Chandran
— shared first authorship
Confined and deconfined chaos in classical spin systems
arXiv:2507.07168 (2025)
D. Vuina, R. Schäfer, D. M. Long, A. Chandran
Probing Hilbert space fragmentation using controlled dephasing
Phys. Rev. B 112, 134305 (2025)
E. M. Smith, A. Fitterman, R. Schäfer, et al.
Two-Peak Heat Capacity Accounts for \(R\log(2)\) Entropy and Ground State Access in the Dipole-Octupole Pyrochlore Ce\(_2\)Hf\(_2\)O\(_7\)
Phys. Rev. Lett. 135, 086702 (2025) — Editor’s Suggestion
E. M. Smith, R. Schäfer, et al.
Single Crystal Diffuse Neutron Scattering Study of the Dipole-Octupole Quantum Spin Ice Candidate Ce\(_2\)Zr\(_2\)O\(_7\): No Apparent Octupolar Correlations Above \(T = 0.05 K\)
Phys. Rev. X 15, 021033 (2025)
R. Schäfer, and D. J. Luitz
DanceQ: High-performance library for number conserving bases
SciPost Phys. Codebases 48 (2025)
DanceQ repository and DanceQ documentation

Z. Lu, R. Schäfer, J. N. Hallén, C. R. Laumann
[111]-strained spin ice: Localization of thermodynamically deconfined monopoles
Phys. Rev. B 110, 184421 (2024)
D. Yahne, B. Placke, R. Schäfer, et al.
Dipolar spin ice regime proximate to an all-in-all-out Néel ground state in the dipolar-octupolar pyrochlore Ce\(_2\)Sn\(_2\)O\(_7\)
Phys. Rev. X 14, 011005 (2024)

J. Beare, E. M. Smith, J. Dudemaine, R. Schäfer, et al.
μSR Study of the Dipole-Octupole Quantum Spin Ice Candidate Ce\(_2\)Zr\(_2\)O\(_7\)
Phys. Rev. B 108, 174411 (2023)
E. M. Smith, J. Dudemaine, B. Placke, R. Schäfer, et al.
Quantum Spin Ice Response to a Magnetic Field in the Dipole-Octupole Pyrochlore Ce\(_2\)Zr\(_2\)O\(_7\)
Phys. Rev. B 108, 054438 (2023)
R. Schäfer, B. Placke, O. Benton, and R. Moessner
Abundance of hard-hexagon crystals in the quantum pyrochlore antiferromagnet
Phys. Rev. Lett. 131, 096702 (2023)

R. Schäfer, J. C. Budich, and D. J. Luitz
Symmetry protected exceptional points of interacting fermions
Phys. Rev. Research 4, 033181 (2022)
I. Hagymási, R. Schäfer, R. Moessner, and D. J. Luitz
Magnetization process and ordering of the \(S=1/2\) pyrochlore Heisenberg antiferromagnet in a magnetic field
Phys. Rev. B 106, L060411 (2022)
E. Smith, O. Benton, D. Yahne, B. Placke, R. Schäfer, et al.
The case for a U(1)π Quantum Spin Liquid Ground State in the Dipole-Octupole Pyrochlore Ce\(_2\)Zr\(_2\)O\(_7\)
Phys. Rev. X 12, 021015 (2022)
Featured in Quantum Science and Technology Collection

I. Hagymási, R. Schäfer, R. Moessner, and D. J. Luitz
Possible Inversion Symmetry Breaking in the \(S=1/2\) Pyrochlore Heisenberg Magnet
Phys. Rev. Lett. 126, 117204 (2021)

R. Schäfer, I. Hagymási, R. Moessner, and D. J. Luitz
Pyrochlore \(S=1/2\) Heisenberg antiferromagnet at finite temperature
Phys. Rev. B 102, 054408 (2020)

R. Schäfer, G. S. Uhrig, and J. Stolze
Time-crystalline behavior in an engineered spin chain
Phys. Rev. B 100, 184301 (2019)