Elucidating magnetic structure with optical dopants: erbium-doped Gd$_2$SiO$_5$

• URL: http://arxiv.org/abs/2603.12603v1
• Date: Fri, 13 Mar 2026 03:10:50 GMT
• Title: Elucidating magnetic structure with optical dopants: erbium-doped Gd$_2$SiO$_5$
• Abstract summary: We measured the optical transitions Er$3+$ dopants to determine the previously unknown magnetic ordering of Gd$_2$SiO$_5$.<n>By measuring the transitions' magnetic-field dependence we determined an antiferromagnetic ordering with spins oriented along or slightly canted from the crystal's $a*$ axis.<n>This study can be used to benchmark a method of magnetic structure determination.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: The narrowness of the optical transitions of rare-earth-ion dopants makes them highly sensitive probes of their environment. We measured the optical transitions Er$^{3+}$ dopants to determine the previously unknown magnetic ordering of Gd$_{2}$SiO$_{5}$ -- a promising host for quantum applications of rare-earth dopants. By measuring the transitions' magnetic-field dependence we determined an antiferromagnetic ordering with spins oriented along or slightly canted from the crystal's $a^*$ axis. The optical transitions are narrower than the coupling to gadolinium spins revealing information about the coupling strengths. We further optically measured a Néel temperature of $1.86\pm0.01_\mathrm{stat.}\pm0.07_\mathrm{syst.}$ K, and assembled a phase diagram in applied field and temperature showcasing a triple point where two gadolinium sites order semi-independently from each other. At high applied field the erbium dopants show long optical coherence times up to 0.4 ms at 3 T; at low fields these are probably limited by three low-frequency magnon modes below 10 GHz, observed directly. This study can be used to benchmark a method of magnetic structure determination.

Related papers

• Triangulene-based diradicals as a blueprint for molecular quantum platforms with optical addressability and long spin coherence times [38.329708057847306]
  We unravel the electronic structure for triangulene, its aza-cation derivative, and the crystal of 2,6,10-tri-tert-butyl-4,8,12-trimesityl-triangulene.<n>Results advance a unified first-principles theoretical foundation of spin decoherence and spin-selective excited-state processes.
  arXiv  Detail & Related papers  (2026-07-09T16:04:38Z)
• Millisecond spin relaxation times of distinct electron and hole subensembles in MA$_x$FA$_{1-x}$PbI$_3$ perovskite crystals [0.0]
  We study the spins of electrons and holes in mixed-cation MA$_x$FA$_1-x$PbI$_3$ single crystals with $x = 0.4$ and 0.8.<n>Multiple distinct spin subensembles with $g$-factors spanning from 2.9 to 3.6 for electrons and from 0.5 to 1.2 for holes are resolved.<n>These results establish mixed-A-site perovskite single crystals as a promising solid-state platform with long-lived spin states for quantum information applications.
  arXiv  Detail & Related papers  (2026-04-08T09:44:33Z)
• Robust AC vector sensing at zero magnetic field with pentacene [45.7221176995052]
  Quantum sensors based on electronic spins have emerged as powerful probes of microwave-frequency fields.<n>Here, we demonstrate microwave vector magnetometry using the photoexcited spin triplet of pentacene molecules.
  arXiv  Detail & Related papers  (2025-12-06T03:49:12Z)
• Spectroscopy and Coherence of an Excited-State Transition in $\text{Tm}^{3+}$:$\text{YAlO}_{3}$ at Telecommunication Wavelength [0.0]
  We characterize the spectroscopic and coherence properties of the 1451.37 nm excited-state zero-phonon line (ZPL) in a rare-earth crystal.<n>Our results suggest the possibility of exploiting such transitions for quantum technology.
  arXiv  Detail & Related papers  (2025-11-07T15:56:52Z)
• Finite Spinon Density-of-States in Triangular-Lattice Delafossite TlYbSe$_2$ [4.737474570094059]
  We introduce the rare-earth delafossite compound TlYbSe$$ -- extending the search for quantum spin liquids in triangular lattice magnets.<n>Heat capacity measurements reveal no signs of long-range magnetic order down to 20 mK, indicating a quantum-disordered ground state.<n>The results establish the low-temperature, low-field regime of TlYbSe$$ as a prime candidate for field-tunable triangular quantum spin liquid behavior.
  arXiv  Detail & Related papers  (2025-04-07T18:59:51Z)
• Waveguide quantum electrodynamics at the onset of spin-spin correlations [36.136619420474766]
  We find that molecules belonging to one of the two crystal sublattices form one-dimensional spin chains.<n>The microwave transmission shows evidences for the collective coupling of quasi-identical spins to the propagating photons.
  arXiv  Detail & Related papers  (2024-04-04T18:00:05Z)
• Optical coherence properties of Kramers' rare-earth ions at the nanoscale for quantum applications [41.30071614056703]
  Rare-earth (RE) ion doped nano-materials are promising candidates for a range of quantum technology applications. Among RE ions, the so-called Kramers' ions possess spin transitions in the GHz range at low magnetic fields. We measure spectroscopic properties that are of relevance to using these materials in quantum technology applications.
  arXiv  Detail & Related papers  (2023-03-03T16:23:29Z)
• Multi-Center Magnon Excitations Open the Entire Brillouin Zone to Terahertz Magnetometry of Quantum Magnets [42.72559625804617]
  The magnon density of states can be accessed over the entire Brillouin zone through three-center magnon excitations. The results of THz time-domain experiments agree remarkably well with linear spin-wave theory.
  arXiv  Detail & Related papers  (2022-03-08T19:04:24Z)
• High-resolution 'magic'-field spectroscopy on trapped polyatomic molecules [62.997667081978825]
  Rapid progress in cooling and trapping of molecules has enabled first experiments on high resolution spectroscopy of trapped diatomic molecules. Extending this work to polyatomic molecules provides unique opportunities due to more complex geometries and additional internal degrees of freedom.
  arXiv  Detail & Related papers  (2021-10-21T15:46:17Z)
• A Raman heterodyne determination of the magnetic anisotropy for the ground and optically excited states of Y$_{2}$SiO$_{5}$ doped with Sm$^{3+}$ [0.0]
  We present the full magnetic g tensors of the $6$H$_5/2$Z$_1$ and $4$G$_5/2$A$_1$ electronic states for both crystallographic sites in Sm$3+$:Y$_2$SiO$_5$.
  arXiv  Detail & Related papers  (2021-04-23T05:07:00Z)
• Optimal coupling of HoW$_{10}$ molecular magnets to superconducting circuits near spin clock transitions [85.83811987257297]
  We study the coupling of pure and magnetically diluted crystals of HoW$_10$ magnetic clusters to microwave superconducting coplanar waveguides. Results show that engineering spin-clock states of molecular systems offers a promising strategy to combine sizeable spin-photon interactions with a sufficient isolation from unwanted magnetic noise sources.
  arXiv  Detail & Related papers  (2019-11-18T11:03:06Z)

This list is automatically generated from the titles and abstracts of the papers in this site.

This site does not guarantee the quality of this site (including all information) and is not responsible for any consequences.