High-precision luminescence cryothermometry strategy by using hyperfine structure
Marina N. Popova, Mosab Diab, Boris Z. Malkin
https://arxiv.org/abs/2511.19088 https://arxiv.org/pdf/2511.19088 https://arxiv.org/html/2511.19088
arXiv:2511.19088v1 Announce Type: new
Abstract: A novel, to the best of our knowledge, ultralow-temperature luminescence thermometry strategy is proposed, based on a measurement of relative intensities of hyperfine components in the spectra of Ho$^{3 }$ ions doped into a crystal. A $^{7}$LiYF$_4$:Ho$^{3 }$ crystal is chosen as an example. First, we show that temperatures in the range 10-35 K can be measured using the Boltzmann behavior of the populations of crystal-field levels separated by an energy interval of 23 cm$^{-1}$. Then we select the 6089 cm$^{-1}$ line of the holmium $^5I_5 \rightarrow ^5I_7$ transition, which has a well-resolved hyperfine structure and falls within the transparency window of optical fibers (telecommunication S band), to demonstrate the possibility of measuring temperatures below 3 K. The temperature $T$ is determined by a least-squares fit to the measured intensities of all eight hyperfine components using the dependence $I(\nu) = I_1 \exp(-b\nu)$, where $I_1$ and $b = a\nu \frac{\nu}{kT}$ are fitting parameters and a accounts for intensity variations due to mixing of wave functions of different crystal-field levels by the hyperfine interaction. In this method, the absolute and relative thermal sensitivities grow at $T$ approaching zero as $\frac{1}{T^2}$.and $\frac{1}{T}$, respectively. We theoretically considered the intensity distributions within hyperfine manifolds and compared the results with experimental data. Application of the method to experimentally measured relative intensities of hyperfine components of the 6089 cm$^{-1}$ PL line yielded $T = 3.7 \pm 0.2$ K. For a temperature of 1 K, an order of magnitude better accuracy is expected.
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Crosslisted article(s) found for physics.optics. https://arxiv.org/list/physics.optics/new
[1/1]:
- Robot joint characterisation and control using a magneto-optical rotary encoder
Yunlong Guo, John Canning, Zenon Chaczko, Gang-Ding Peng
https://arxiv.org/abs/2511.17608 https://mastoxiv.page/@arXiv_csRO_bot/115609561523131866
- Comprehensive Multimodal and Multiscale Analysis of Alzheimer Disease in 5xFAD Mice: Optical Spec...
Solanki, Apachigawo, Khan, Maity, Alharthi, Nasim, Poshtiri, Sweety, Xiao, Khan, Pradhan
https://arxiv.org/abs/2511.18320 https://mastoxiv.page/@arXiv_physicsmedph_bot/115609269625501897
- Stable multipole solitons in defocusing saturable media with an annular trapping potential
Xiaoli Lang, Boris A. Malomed, Liangwei Dong
https://arxiv.org/abs/2511.18356 https://mastoxiv.page/@arXiv_nlinPS_bot/115609515016328541
- High-Accuracy Material Classification via Reference-Free Terahertz Spectroscopy: Revisiting Spect...
Mathias Hedegaard Kristensen, Pawe{\l} Piotr Cielecki, Esben Skovsen
https://arxiv.org/abs/2511.18572 https://mastoxiv.page/@arXiv_physicsappph_bot/115609324247942112
- Observation of Dicke cooperativity between strongly coupled phonons and crystal-field excitations...
Fangliang Wu, Xiaoxuan Ma, Zhongwei Zhang, Motoaki Bamba, Jian Sun, Yuan Wan, Shixun Cao, Qi Zhang
https://arxiv.org/abs/2511.18862 https://mastoxiv.page/@arXiv_condmatmtrlsci_bot/115609901666309913
- Strong Energy Dependent Transition Radiation in a Photonic Crystal
V. Gareyan, Zh. Gevorkian
https://arxiv.org/abs/2511.18863 https://mastoxiv.page/@arXiv_physicsaccph_bot/115609494674308155
- 3M-TI: High-Quality Mobile Thermal Imaging via Calibration-free Multi-Camera Cross-Modal Diffusion
Minchong Chen, Xiaoyun Yuan, Junzhe Wan, Jianing Zhang, Jun Zhang
https://arxiv.org/abs/2511.19117 https://mastoxiv.page/@arXiv_csCV_bot/115610498715181168
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Urban Domicile 🏠
城市聚落 🏠
📷 Pentax MX
🎞️ Ilford Pan 100
#filmphotography #Photography #blackandwhite
Although I must admit, I much prefer crystal-clear problems (URL NO CONNECT) with clean fixes over the sort I spend most of my time on, where I can only see the problem through the lens of other people's perception of slow vs. fast across something like a 10k-mile connection. With all the concomitant obscurants, both technical and cultural.
#Sysadminnery
Discovery of oxide Li-conducting electrolytes in uncharted chemical space via topology-constrained crystal structure prediction
Seungwoo Hwang, Jiho Lee, Seungwu Han, Youngho Kang, Sungwoo Kang
https://arxiv.org/abs/2509.25763
Intrinsic ultrafast edge photocurrent dynamics in WTe$_2$ driven by broken crystal symmetry
Subhashri Chatterjee, Katsumasa Yoshioka, Taro Wakamura, Vasili Perebeinos, Norio Kumada
https://arxiv.org/abs/2510.06618
JWST/MIRI-MRS view of the metal-poor galaxy CGCG 007-025: the spatial location of PAHs and very highly ionized gas
Macarena G. del Valle-Espinosa, Matilde Mingozzi, Bethan James, Ruben Sanchez-Janssen, Juan Antonio Fernandez-Ontiveros, Ryan J. Rickards Vaught, Ricardo O. Amorin, Leslie Hunt, Alessandra Aloisi, Karla Z. Arellano-Cordova, Danielle A. Berg, John Chisholm, Matthew Hayes, Svea Hernandez, Alec Hirschauer, Logan Jones, Crystal L. Martin, Livia Vallini, Xinfeng Xu
Anisotropic antiferromagnetic order in EuPd$_3$Si$_2$
Michelle Ocker, Franziska Walther, Nour Maraytta, Matthieu Le Tacon, Michael Merz, Cornelius Krellner, Kristin Kliemt
https://arxiv.org/abs/2509.26105
Scintillating properties of Cs${_2}$ZrCl${_6}$ crystals in the temperature range of 5-300 K
F. Cappella, P. C. F. Di Stefano, E. Ellingwood, J. Hucker, T. Leroy, S. S. Nagorny, V. V. Nahorna, L. Pagnanini, P. Skensved, N. Swidinsky, P. Wang
https://arxiv.org/abs/2509.26416
Exploring vibronic dynamics near a sloped conical intersection with trapped Rydberg ions
Abdessamad Belfakir, Weibin Li
https://arxiv.org/abs/2512.04941 https://arxiv.org/pdf/2512.04941 https://arxiv.org/html/2512.04941
arXiv:2512.04941v1 Announce Type: new
Abstract: We study spin-phonon coupled dynamics in the vicinity of a sloped conical intersection created by laser coupling the electronic (spin) and vibrational degrees of freedom of a pair of trapped Rydberg ions. We show that the shape of the potential energy surfaces can be engineered and controlled by exploiting the sideband transitions of the crystal vibration and dipole-dipole interactions between Rydberg ions in the Lamb-Dicke regime. Using the sideband transition, we realize a sloped conical intersection whose cone axis is only tilted along one spatial axis. When the phonon wavepacket is located in the potential minimum of the lower potential surface, the spin and phonon dynamics are largely frozen owing to the geometric phase effect. When starting from the upper potential surface, the electronic and phonon states tunnel to the lower potential surface, leading to a partial revival of the initial state. In contrast, the dynamics drastically change when the initial wavepackets are away from the conical intersection. The initial state is revived, and is almost entirely irrelevant to whether it is from the lower or upper potential surface. Complete Rabi oscillations of the adiabatic states are found when the wavepacket is initialized on the upper potential surface. The dynamics occur on the microsecond and nanometer scales, implying that Rydberg ions provide a platform for simulating nonadiabatic processes in the vicinity of a sloped conical intersection.
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Kinetic Monte Carlo prediction of the morphology of pentaerythritol tetranitrate
Jacob Jeffries, Himanshu Singh, Romain Perriot, Christian Negre, Antonio Redondo, Enrique Martinez
https://arxiv.org/abs/2509.25490
The development of a high granular crystal calorimeter prototype of VLAST
Yanshuo Zhang, Qian Chen, Dengyi Chen, Jianguo Liu, Yiming Hu, Yunlong Zhang, Yifeng Wei, Zhongtao Shen, Changqing Feng, Jianhua Guo, Shubin Liu, Guangshun Huang, Xiaolian Wang, Zizong Xu
https://arxiv.org/abs/2509.24851
Spontaneous lattice distortion and crystal field effects in HoB4
S. Goswami, D. I. Gorbunov, D. Kriegner, I. Ishii, C. A. Correa, T. Suzuki, D. Brunt, G. Balakrishnan, S. Zherlitsyn, J. Wosnitza, O. A. Petrenko, M. S. Henriques
https://arxiv.org/abs/2510.01075
Replaced article(s) found for physics.atom-ph. https://arxiv.org/list/physics.atom-ph/new
[1/1]:
- Wideband search for axionlike dark matter using octupolar nuclei in a crystal
Mingyu Fan, Bassam Nima, Aleksandar Radak, Gonzalo Alonso-\'Alvarez, Amar Vutha
@arXiv_physicsoptics_bot@mastoxiv.page
