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Physics

Condensed matter

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Displaying 26 - 50 of 1274

Topological Nodal Line and Weyl Magnons in the Non-Coplanar Antiferromagnet MnTe2

December 20, 2025
Author(s)
Angela Hight Walker, Thuc Mai, Kevin Garrity
Using a combination of band representation analysis, inelastic neutron scattering (INS), magneto-Raman spectroscopy measurements, and linear spin wave theory, we determine that the non-coplanar antiferromagnet MnTe2 hosts symmetry-protected topological

UV-enabled Defect Engineering in Multilayer GaSe and InSe and UV Writing of the Grating Pattern

November 25, 2025
Author(s)
Bhojraj Bhandari, Sinto Varghese, Amar Ghimire, Bimal Neupane, Sicheng Wang, Yan Jiang, Roberto Rodrigues, Sergiy Krylyuk, Albert Davydov, Yuanxi Wang, Hao Yan, Jingbiao Cui, Yuankun Lin
III−VI post-transition-metal chalcogenides are layered semiconductor materials that exhibit direct band gaps in multilayers. Defect engineering is essential in 2D layered semiconductors for functional devices. Here, we report defect engineering in

Magnetism and Peierls distortion in Dirac semimetal CaMnBi2

November 4, 2025
Author(s)
Aashish Sapkota, Niraj Aryal, Xiao Hu, Masaaki Matsuda, Yan Wu, Guangyong Xu, John Wilde, Andreas Kreyssig, Paul Canfield, Cedomir Petrovic, John Tranquada, Igor Zaliznyak
Dirac semimetals of the form AMnX2 (A = alkaline-earth or divalent rare earth; X = Bi, Sb) host conducting square-net Dirac-electron layers of X atoms interleaved with antiferromagnetic MnX layers. In these materials, canted antiferromagnetism can break

Unraveling spin entanglement using quantum gates with scanning tunneling microscopy-driven electron spin resonance

October 31, 2025
Author(s)
Eric Switzer, Jose Reina Galvez, Geza Giedke, Talat Rahman, Christoph Wolf, Deung-Jang Choi, Nicolas Lorente
Quantum entanglement is a fundamental resource for quantum information processing, and its controlled generation and detection remain key challenges in scalable quantum architectures. Here, we demonstrate the deterministic generation of entangled spin

Entropic modulation of divalent cation transport

September 22, 2025
Author(s)
Yechan Noh, Demian Riccardi, Alexander Smolyanitsky
Aqueous cations permeate subnanoscale pores by crossing free energy barriers dominated by competing enthalpic contributions from transiently decreased ion-solvent and increased ion-pore electrostatic interactions. This commonly accepted view is rooted in

Materials discovery in combinatorial and high-throughput synthesis and processing: A new Frontier for SPM

August 27, 2025
Author(s)
Boris Slautin, Yungtao Liu, Kamyar Barakati, Yu Liu, Reece Emery, Seungbum Hong, Astita Dubey, Vladimir Shvartsman, Doru Lupascu, Sheryl Sanchez, Mahshid Ahmadi, Yunseok Kim, Evgheni Strelcov, Keith Brown, Philip Rack, Sergei Kalinin
For over three decades, scanning probe microscopy (SPM) has been a key method for exploring material structures and functionalities at nanometer and often atomic scales in ambient, liquid, and vacuum environments. Historically, SPM applications have

Tuning Incommensurate Charge Order in Ba1-xSrxAl4 and Ba1-yEuyAl4

July 20, 2025
Author(s)
Prathum Saraf, Eleanor M. Clements, Danila Sokratov, Shanta Saha, Peter Zavalij, Thomas Heitmann, Jeffrey Lynn, Camille Bernal-Chobin, Dipanjan Chaudhuri, Caitlin Kengle, Yue Su, Simon Bettler, Nathan Manning, Peter Abbamonte, Sananda Biswas, Roser Valenti, Johnpierre Paglione
The BaAl4-type structure family is home to a vast landscape of interesting and exotic properties, with descendant crystal structures hosting a variety of electronic ground states including magnetic, superconducting and strongly correlated electron

Disorder-Induced Spin Excitation Continuum and Spin-Glass Ground State in the Inverse Spinel CuGa2O4

July 10, 2025
Author(s)
Zhentao Huang, Zhijun Xu, Shuaiwei Li, Qingchen Duan, Junbo Liao, Song Bao, Yanyan Shangguan, Bo Zhang, Hao Xu, Shufan Cheng, Zihang Song, Shuai Dong, Maofeng Wu, M. B. Stone, Yiming Qiu, Ruidan Zhang, Guangyong Xu, Zhen Ma, G. Gu, J. Tranquada, Jinsheng Wen
Spinel-structured compounds serve as prototypical examples of highly frustrated systems and are promising candidates for realizing the long-sought quantum spin liquid (QSL) state. However, structural disorder is inevitable in many real QSL candidates and

Non-resonant Two-photon X-ray Absorption in Cu

July 10, 2025
Author(s)
Joshua Kas, John Rehr, Joachim Stohr, John Vinson
We present a real-space Green's function theory and calculations of two-photon x-ray absorption (TPA). Our focus is on nonresonant K-shell TPA in metallic Cu, which has been observed experimentally at intense x-ray free electron laser (XFEL) sources. The

Polarization-dependent Resonant Inelastic X-ray Scattering of b-Ga2O3: an Experimental and Computational Study

July 7, 2025
Author(s)
Elizaveta Pyatenkoa, John Vinson, Dirk Hauschild, Constantin Wansorra, Wanli Yang, Monika Blum, Clemens Heske, Lothar Weinhardt
The bulk electronic structure of ???-Ga2O3 single crystals was investigated using oxygen K-edge x-ray emission and absorption spectroscopy as well as resonant inelastic soft x-ray scattering. Spectra were obtained for different orientations of the crystal

Anomalous Hall Effect Emerging from Field-Induced Weyl Nodes in SmAlSi

June 4, 2025
Author(s)
Yuxiang Gao, Shiming Lei, Eleanor Clememts, Yichen Zhang, Xue-Jian Gao, Songxue Chi, Kam Law, Ming Yi, Jeffrey Lynn, Emilia Morosan
The intrinsic anomalous Hall effect (AHE) has been reported in numerous ferromagnetic Weyl semimetals. However, the AHE in the antiferromagnetic (AFM) or paramagnetic (PM) state of Weyl semimetals has rarely been observed experimentally. Different

Strain-programmable van der Waals magnetic tunnel junctions

June 3, 2025
Author(s)
John Cenker, Dmitry Ovchinnikov, Harvey Yang, Daniel Chica, Catherine Zhu, Jiaqi Cai, Geoffrey Diederich, Zhaoyu Liu (liuzhaoyu), Xiaoyang Zhu, Xavier Roy, Ting Cao, Matthew Daniels, Jiun-Haw Chu, Di Xiao, Xiaodong Xu
Magnetic tunnel junctions (MTJs) are foundational spintronics devices with applications ranging from stable magnetic memory to emerging stochastic computing schemes. Integrating van der Waals magnets into these devices could enable the realization of

Phonon lifetimes and mode softening in cubic Cs2AgBiBr6

June 2, 2025
Author(s)
Zihan Zhang, Peter Gehring, Adam H. Slavney, Julian A. Vigil, Tao Hong, Jose Rodriguez Rivera, Johan Klarbring, Hemamala Karunadasa, Michael Toney, Nicholas Weadock
Metal halide perovskites (MHPs) have emerged as noteworthy candidates for photovoltaic applications in recent years. Their high power-conversion efficiency is largely attributed to the structure-function relationship, which is not well understood. In this

280-GHz aluminum MKID arrays for the Fred Young Submillimeter Telescope

May 29, 2025
Author(s)
Anna Vaskuri, Jordan Wheeler, Jason Austermann, Michael Vissers, James Beall, James R. Burgoyne, Victoria Butler, Scott Chapman, Steve K. Choi, Abigail Crites, Cody J. Duell, Rodrigo Freundt, Anthony Huber, Zachary Huber, Johannes Hubmayr, Jozsef Imrek, Ben Keller, Lawrence Lin, Alicia Middleton, Michael D. Niemack, Thomas Nikola, Douglas Scott, Adrian Sinclair, Ema Smith, Gordon Stacey, Joel Ullom, Jeffrey Van Lanen, Eve Vavagiakis, Samantha Walker, Bugao Zou
First light observations of the 280 GHz instrument module of the Fred Young Submillimeter Telescope (FYST) in the CCAT Collaboration are expected in 2026. The focal plane of this module will consist of three superconducting microwave kinetic inductance

Pair Wave Function Symmetry in UTe2 from Zero-Energy Surface State Visualization

May 29, 2025
Author(s)
Qiangqiang Gu, Shuqiu Wang, Joseph Carroll, Kuanysh Zhussupbekov, Christopher Broyles, Sheng Ran, Nicholas Butch, Jarryd Horn, Shanta Saha, Johnpierre Paglione, Xiaolong Liu, J. Davis, Dung-Hai Lee
Although nodal spin-triplet topological superconductivity appears probable in uranium ditelluride (UTe2), its superconductive order parameter Δk remains unestablished. In theory, a distinctive identifier would be the existence of a superconductive

Reconfigurable All-Nitride Magneto-Ionics

May 7, 2025
Author(s)
Zhijie Chen, Christopher Jensen, Chen Liu, Yijing Liu, Christy Kinane, Andrew Caruana, Alexander Grutter, Julie Borchers, Xixiang Zhang, Kai Liu
The rapid advancement of generative artificial intelligence has significantly increased the demand for both energy and data storage. Voltage control of magnetism has emerged as a potential solution to reduce energy consumption in nanoelectronics. Magneto

Altermagnetic band splitting in 10 nm epitaxial CrSb thin films

May 1, 2025
Author(s)
Sandra Santhosh, Yongxi Ou, Paul Corbae, Wilson Yanez-Parreno, Supriya Ghosh, Alexei Fedorov, Makoto Hashimoto, Donghui Lu, Christopher Jensen, Julie Borchers, Alexander Grutter, Timothy Charlton, Anthony Richardella, K. A. Mkhoyan, Christopher Palmstrom, Nitin Samarth
Altermagnets are a newly identified family of collinear antiferromagnets with a momentum-dependent spin-split band structure of non-relativistic origin, derived from spin-group symmetry-protected crystal structures. Among candidate altermagnets, CrSb is

Robust Nodal Behavior in the Thermal Conductivity of Superconducting UTe2

April 25, 2025
Author(s)
Ian Hayes, Tristin E. Metz, Corey Frank, Shanta R. Saha, Nicholas Butch, Vivek Mishra, P. Hirschfeld, Johnpierre Paglione
The superconducting state of the heavy-fermion metal UTe2 has attracted considerable interest because of evidence of spin-triplet Cooper pairing and nontrivial topology. Progress on these questions requires identifying the presence or absence of nodes in

Zeeman Split Kramers Doublets in Spin-Supersolid Candidate Na2BaCo(PO4)2

April 3, 2025
Author(s)
T. Popescu, N. Gora, F. Demmel, Z. Xu, R. Zhong, T. Williams, R. Cava, Guangyong Xu, C. Stock
Na2BaCo(PO4)2 is a triangular antiferromagnet that displays highly efficient adiabatic demagnetization cooling [Junsen Xiang et al., Nature (London) 625, 270 (2024)] near a quantum critical point at μ0Hc ∼ 1.6 T, separating a low-field magnetically

Continuum of magnetic excitations in the Kitaev honeycomb iridate D3LiIr2O6

March 29, 2025
Author(s)
Thomas Halloran, Yishu Wang, Kemp Plumb, M. B. Stone, Barry Winn, M. K. Graves-Brook, Jose Rodriguez Rivera, Yiming Qiu, Prashant Chauhan, Johannes Knolle, Roderich Moessner, N. Armitage, Tomohiro Takayama, Hidenori Takagi, Collin L. Broholm
Inelastic neutron scattering (INS) measurements of powder D3(7Li)(193Ir)2O6 reveal low energy magnetic excitations with a scattering cross-section that is broad in ∣Q∣ and energy transfer. The magnetic nature of the excitation spectrum is demonstrated by
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