Piezo-orbital backaction force in a rare-earth-doped crystal A. Louchet-Chauvet, P. Verlot, J.-P. Poizat, and T. Chanelière Phys. Rev. Applied 20, 054004 (2023) – Published 1 November 2023 Hybrid optomechanics can bridge the quantum and classical domains, to generally extend quantum principles to macroscopic scale. A milestone here would be observing the fundamental backaction force that occurs when a hybrid mechanical system is optically probed, which can be dominated by classical thermal effects. Using a large ensemble of rare-earth ions in a crystal plus time-resolved tomography, researchers see this backaction as a tiny distortion of the crystal’s surface around a laser beam’s spot, and unambiguously distinguish the photothermal contribution from that of the backaction. Thus rare-earth ions in crystals are confirmed as a promising platform for hybrid optomechanics. 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Their methods have the potential to uncover other low-temperature thermoelectric effects in microdevices, including those made of two-dimensional van der Waals materials. Show Abstract Condensed Matter Physics Nanophysics Spintronics PDFHTML ARTICLES Frequency-mixing spectroscopy of spins in diamond Mohammed Attrash, Sergei Masis, Sergey Hazanov, Oleg Shtempluck, and Eyal Buks Phys. Rev. Applied 20, 054001 (2023) – Published 1 November 2023 Show Abstract Magnetism Optics Quantum Physics PDFHTML Twist-angle-induced boundary-obstructed topological insulator on elastic kagome metamaterials Zi-Dong Zhang, Ming-Hui Lu, and Yan-Feng Chen Phys. Rev. Applied 20, 054002 (2023) – Published 1 November 2023 Show Abstract Acoustics Metamaterials Topological Insulators PDFHTML Nonequilibrium Green’s function simulation of Cu 2 O photocathodes for photoelectrochemical hydrogen production Lassi Hällström and Ilkka Tittonen Phys. Rev. Applied 20, 054003 (2023) – Published 1 November 2023 Show Abstract Energy Research Optoelectronics Physical Chemistry PDFHTML Editors' Suggestion Piezo-orbital backaction force in a rare-earth-doped crystal A. Louchet-Chauvet, P. Verlot, J.-P. Poizat, and T. Chanelière Phys. Rev. Applied 20, 054004 (2023) – Published 1 November 2023 Hybrid optomechanics can bridge the quantum and classical domains, to generally extend quantum principles to macroscopic scale. A milestone here would be observing the fundamental backaction force that occurs when a hybrid mechanical system is optically probed, which can be dominated by classical thermal effects. Using a large ensemble of rare-earth ions in a crystal plus time-resolved tomography, researchers see this backaction as a tiny distortion of the crystal’s surface around a laser beam’s spot, and unambiguously distinguish the photothermal contribution from that of the backaction. Thus rare-earth ions in crystals are confirmed as a promising platform for hybrid optomechanics. Show Abstract Mechanics Optics Quantum Physics PDFHTML Ultrabroadband low-crosstalk dense lithium niobate waveguides by Floquet engineering Zhiyuan Lin, Wange Song, Jiacheng Sun, Xueyun Li, Chunyu Huang, Shengjie Wu, Haoran Xin, Shining Zhu, and Tao Li Phys. Rev. Applied 20, 054005 (2023) – Published 2 November 2023 Show Abstract Materials Science Photonics PDFHTML Editors' Suggestion Cryogenic spin Peltier effect detected by a Ru O 2 − Al O x on-chip microthermometer Takashi Kikkawa, Haruka Kiguchi, Alexey A. Kaverzin, Ryo Takahashi, and Eiji Saitoh Phys. Rev. Applied 20, 054006 (2023) – Published 2 November 2023 Exploring low-temperature thermometry, particularly at the micro- to nanoscale, is essential not only for advancing thermoelectric science, but also for the development of quantum technology. The authors present a methodology and an experimental platform based on an on-chip microthermometer, enabling the detection of extremely small temperature changes in thin films, down to tens of nanokelvins. Using this approach, the authors observe the spin Peltier effect (temperature modulation induced by spin current) at 2 K. Their methods have the potential to uncover other low-temperature thermoelectric effects in microdevices, including those made of two-dimensional van der Waals materials. Show Abstract Condensed Matter Physics Nanophysics Spintronics PDFHTML Effective Landau-type model of a Hf x Zr 1 − x O 2 -graphene nanostructure Anna N. Morozovska, Maksym V. Strikha, Kyle P. Kelley, Sergei V. Kalinin, and Eugene A. Eliseev Phys. Rev. Applied 20, 054007 (2023) – Published 2 November 2023 Show Abstract