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1. Ab initio thermal conductivity of ${\mathrm{Ge}}_x{\mathrm{Sn}}_{1-x}{\mathrm{O}}_2$ alloys

   https://doi.org/10.1103/cgkf-djns  

   Zhang, Xiao; Kioupakis, Emmanouil (June 2025, Physical Review Materials)
2. Mitigation of the internal p-n junction in ${\mathrm{CoS}}_2$ -contacted ${\mathrm{FeS}}_2$ single crystals: Accessing bulk semiconducting transport

   https://doi.org/10.1103/PhysRevMaterials.5.025405  

   Voigt, Bryan; Das, Bhaskar; Carr, David M.; Ray, Debmalya; Maiti, Moumita; Moore, William; Manno, Michael; Walter, Jeff; Aydil, Eray S.; Leighton, Chris (February 2021, Physical Review Materials)

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3. Multiband mean-field theory of the $d+ig$ superconductivity scenario in ${\mathrm{Sr}}_2{\mathrm{RuO}}_4$

   https://doi.org/10.1103/PhysRevB.108.014502  

   Yuan, Andrew C; Berg, Erez; Kivelson, Steven A (July 2023, Physical Review B)

   Many seemingly contradictory experimental findings concerning the superconducting state in Sr2RuO4 can be accounted for on the basis of a conjectured accidental degeneracy between two patterns of pairing that are unrelated to each other under the (D4h) symmetry of the crystal: a dx2-y2-wave (B1g) and a gxy(x2-y2)-wave (A2g) superconducting state. In this paper, we propose a generic multiband model in which the g-wave pairing involving the xz and yz orbitals arises from second-nearest-neighbor BCS channel effective interactions. Even if timereversal symmetry is broken in a d + ig state, such a superconductor remains gapless with a Bogoliubov Fermi surface that approximates a (vertical) line node. The model gives rise to a strain-dependent splitting between the critical temperature Tc and the time-reversal symmetry-breaking temperature TTRSB that is qualitatively similar to some of the experimental observations in Sr2RuO4. 

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4. Absence of $E_{2g}$ Nematic Instability and Dominant $A_{1g}$ Response in the Kagome Metal ${\mathrm{CsV}}_3{\mathrm{Sb}}_5$

   https://doi.org/10.1103/PhysRevX.14.031015  

   Liu, Zhaoyu; Shi, Yue; Jiang, Qianni; Rosenberg, Elliott W; DeStefano, Jonathan M; Liu, Jinjin; Hu, Chaowei; Zhao, Yuzhou; Wang, Zhiwei; Yao, Yugui; et al (July 2024, Physical Review X)

   Ever since the discovery of the charge density wave (CDW) transition in the kagome metal ${\mathrm{CsV}}_3{\mathrm{Sb}}_5$, the nature of its symmetry breaking has been under intense debate. While evidence suggests that the rotational symmetry is already broken at the CDW transition temperature ( $T_{\mathrm{CDW}}$), an additional electronic nematic instability well below $T_{\mathrm{CDW}}$has been reported based on the diverging elastoresistivity coefficient in the anisotropic channel ( $m_{E_{2g}}$). Verifying the existence of a nematic transition below $T_{\mathrm{CDW}}$is not only critical for establishing the correct description of the CDW order parameter, but also important for understanding low-temperature superconductivity. Here, we report elastoresistivity measurements of ${\mathrm{CsV}}_3{\mathrm{Sb}}_5$using three different techniques probing both isotropic and anisotropic symmetry channels. Contrary to previous reports, we find the anisotropic elastoresistivity coefficient $m_{E_{2g}}$is temperature independent, except for a step jump at $T_{\mathrm{CDW}}$. The absence of nematic fluctuations is further substantiated by measurements of the elastocaloric effect, which show no enhancement associated with nematic susceptibility. On the other hand, the symmetric elastoresistivity coefficient $m_{A_{1g}}$increases below $T_{\mathrm{CDW}}$, reaching a peak value of 90 at $T^{*}=20\mathrm{K}$. Our results strongly indicate that the phase transition at $T^{*}$is not nematic in nature and the previously reported diverging elastoresistivity is due to the contamination from the $A_{1g}$channel. Published by the American Physical Society2024 

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5. Spreading resistance effects in tunneling spectroscopy of $\alpha \text{−}{\mathrm{RuCl}}_3$ and ${\mathrm{Ir}}_{0.5}{\mathrm{Ru}}_{0.5}{\mathrm{Cl}}_3$

   https://doi.org/10.1103/PhysRevB.108.245410  

   Frick, Jordan R; Sridhar, Samanvitha; Khansari, Ario; Comstock, Andrew H; Norman, Elizabeth; O’Donnell, Shaun; Maggard, Paul A; Sun, Dali; Dougherty, Daniel B (December 2023, Physical Review B)