Tootfinder

A van der Waals material exhibiting room temperature broken inversion symmetry with ferroelectricity
Fabia F. Athena, Cooper A. Voigt, Mengkun Tian, Anjan Goswami, Emily Toph, Moses Nnaji, Fanuel Mammo, Brent K. Wagner, Sungho Jeon, Wenshan Cai, Eric M. Vogel
https://arxiv.org/abs/2510.03977

A van der Waals material exhibiting room temperature broken inversion symmetry with ferroelectricity
Since the initial synthesis of van der Waals two-dimensional indium selenide was first documented in 1957, five distinct polymorphs and their corresponding polytypes have been identified. In this study, we report a unique phase of indium selenide via Scanning Transmission Electron Microscopy (STEM) analysis in the synthesized large-area films -- which we have named the $β^\text{p}$ phase. The quintuple layers of the $β^\text{p}$ phase, characterized by a unique zigzag atomic configuration wit…

Electric-field control of two-dimensional ferromagnetic properties by chiral ionic gating
Hideki Matsuoka, Amaki Moriyama, Tomohiro Hori, Yoshinori Tokura, Yoshihiro Iwasa, Shu Seki, Masayuki Suda, Naoya Kanazawa
https://arxiv.org/abs/2507.20723

Electric-field control of two-dimensional ferromagnetic properties by chiral ionic gating
Chiral molecular systems offer unique pathways to control spin and magnetism beyond conventional symmetry operations. Here, we demonstrate that chiral ionic liquids enable electric-field modulation of two-dimensional (2D) ferromagnetism in FeSi(111) thin films via electric double-layer transistor (EDLT) gating. FeSi hosts chemically-stable, surface-confined ferromagnetism without bulk moments, making the interfacial spins highly responsive to chiral-ion adsorption. Using both achiral and chiral…

A fast powerful X-ray transient from tidal disruption of a white dwarf
D. -Y. Li, J. Yang, W. -D. Zhang, the Einstein Probe collaborations
https://arxiv.org/abs/2509.25877 https…

A fast powerful X-ray transient from tidal disruption of a white dwarf
Stars captured by black holes (BHs) can be tore apart by strong tidal force, producing electromagnetic flares. Some 100 tidal disruption events (TDEs) have been observed, involving invariably normal gaseous stars whose debris falls onto the BH fueling the flares over years. White dwarfs (WDs)-the most prevalent compact stars a million times denser and thus tougher than gaseous stars-can only be disrupted by intermediate-mass black holes (IMBHs) of 10^2-10^5 solar masses. WD-TDEs are predicted t…

Light-programmable reorientation of the crystallographic c-axis of Tellurium thin films
Yuta Kobayashi, Arata Mitsuzuka, Haruo Kondo, Makoto Shoshin, Jun Uzuhashi, Tadakatsu Ohkubo, Masamitsu Hayashi, Masashi Kawaguchi
https://arxiv.org/abs/2508.18584

Light-programmable reorientation of the crystallographic c-axis of Tellurium thin films
Tellurium (Te), a two-dimensional material with pronounced structural anisotropy, exhibits exceptional electrical and optical properties that are highly sensitive to its crystallographic orientation. However, conventional synthesis techniques offer limited control over the in-plane alignment of Te's crystallographic c-axis, hindering large-scale integration. Here, we report a novel, non-contact method to dynamically manipulate the c-axis orientation of Te thin films using linearly polarized pic…

Putting a new spin on the incommensurate Kekul\'e spiral: from spin-valley locking and collective modes to fermiology and implications for superconductivity
Ziwei Wang, Glenn Wagner, Yves H. Kwan, Nick Bultinck, Steven H. Simon, S. A. Parameswaran
https://arxiv.org/abs/2509.12320

Putting a new spin on the incommensurate Kekulé spiral: from spin-valley locking and collective modes to fermiology and implications for superconductivity
We revisit the global phase diagram of magic-angle twisted bilayer and [symmetric] trilayer graphene (MA-TBG/TSTG) in light of recent scanning tunneling microscopy (STM) measurements on these materials. These experiments both confirmed the importance of strain in stabilizing the predicted incommensurate Kekulé spiral (IKS) order near filling $|ν|=2$ of the weakly dispersive central bands in both systems, and suggested a key role for electron-phonon couplings and short-range Coulomb …