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Physics

Condensed matter

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Displaying 26 - 50 of 1253

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

Multiferroicity and Phase Diagram of Ferro-Rotational Magnet RbFe(SO4)2

March 27, 2025
Author(s)
Junjie Yang, Dimuthu Obeysekera, William Ratcliff, Lu Li, Sabine N. Neal, Janice L. Musfeldt, Shinichiro Yano
Ferro-rotational magnet RbFe(SO4)2 has attracted attention for its stable ferro-rotational phase and electric-field-controlled magnetic chirality. This work presents the multiferroic properties and H–T phase diagram of RbFe(SO4)2, which have been

Chiral Microwave Nonreciprocity Demonstrated via Rayleigh and Sezawa Modes Supported in an Al0.58Sc0.42N/4H-SiC PlatformPlatform

March 24, 2025
Author(s)
A. Will-Cole, Xingyu Du, Bin Luo, Valeria Lauter, Alexander Grutter, Lisa Hackett, Michael Miller, Yuanchen Deng, Brandon Smith, Olivia Pitcl, Nian X. Sun, III Olsson, Matt Eichenfield
Chirality plays a crucial role in the helicity mismatch between surface acoustic waves and magnetic spin waves, leading to nonreciprocal transmission of acoustic power for coupled magnetoacoustic modes. Acoustic modes with both longitudinal and shear

Odd-Parity Quasiparticle Interference in the Superconductive Surface State of UTe2

March 22, 2025
Author(s)
Shuqiu Wang, Kuanysh Zhussupbekov, Joseph Carroll, Bin Hu, Xiaolong Liu, Emile Pangburn, Adeline Crepieux, Cathrine Pepin, Christopher Broyles, Sheng Ran, Nicholas Butch, Shanta Saha, Johnpierre Paglione, Cristina Bena, J. Davis, Qiangqiang Gu
Although no known material exhibits intrinsic topological superconductivity, wherein spin-triplet odd-parity electron pairing occurs, UTe2 is now the leading representative of this class. Conventionally, the parity of the superconducting order parameter

Electron transport in bilayer graphene nanoconstrictions patterned using atomic force microscope nanolithography

March 20, 2025
Author(s)
Robert Rienstra, Nishat Sultana, En-Min Shih, Evan Stocker, Kenji Watanabe, Takashi Taniguchi, Curt Richter, Joseph Stroscio, Nikolai Zhitenev, Fereshte Ghahari Kermani
Here we report on low temperature transport measurements of encapsulated bilayer graphene nano constrictions fabricated employing electrode-free AFM-based local anodic oxidation (LAO) nanolithography. This technique allows for the creation of constrictions

Detection of fractional quantum Hall states by entropy-sensitive measurements

March 17, 2025
Author(s)
Nishat Sultana, Robert Rienstra, K Watanabe, T Taniguchi, Joseph Stroscio, Nikolai Zhitenev, D Feldman, Fereshte Ghahari Kermani
Measurements of the thermopower of a clean two-dimensional electron system is directly proportional to the entropy per charge carrier1 which can probe strongly interacting quantum systems ranging from black holes2 to the fractional quantum Hall effect

Thermal properties and ultra-low thermal conductivity of Zn2GeSe4

March 11, 2025
Author(s)
Oluwagbemiga Ojo, Wilarachchige Gunatilleke, Adam Biacchi, Hsin Wang, George Nolas
Materials-related discovery continues to drive advancements in technologically significant fields of interest. Moreover, an understanding of the thermal properties of materials is essential for any application of interest. Here, we report on the structural

High-endurance bulk CMOS one-transistor cryo-memory

February 28, 2025
Author(s)
Alexander Zaslavsky, Pragya Shrestha, Valery Ortiz Jimenez, Jason Campbell, Curt Richter
Previously we reported a compact one-transistor (1T) 180 nm bulk CMOS cryo-memory with a high 10^7 I_1/I_0 memory window and long 800 s retention time based on impact-ionization-induced charging of the transistor body. Here, we present the endurance and

Quantum Emitters Induced by High Pressure and UV Laser Irradiation in Multilayer GaSe

February 14, 2025
Author(s)
Sinto Varghese, Sichenge Wang, Bimal Neupane, Bhojraj Bhandari, Yan Jiang, Roberto Gonzalez Rodriguez, Sergiy Krylyuk, Albert Davydov, Hao Yan, Yuanxi Wang, Anupama Kaul, Jingbiao Cui, Yuankun Lin
In this work, we report on defect generation in multilayer GaSe through hydrostatic pressure quenching and UV laser irradiation. The Raman line width from the UV 266 nm irradiated sample is much wider than that in pressure-quenched GaSe, corresponding to a

Electronic Commensuration of a Spin Moire Superlattice in a Layered Magnetic Semimetal

February 4, 2025
Author(s)
Takashi Kurumaji, Nisarga Paul, Shiang Fang, Paul Neves, Mingu Kang, Jonathan White, Taro Nakajima, David Graf, Linda Ye, Mun Chan, Takehito Suzuki, Jonathan Denlinger, Chris Jozwiak, Aaron Bostwick, Eli Rotenberg, Jeffrey Lynn, Efthimios Kaxiras, Riccardo Comin, Liang Fu, Joseph Checkelsky, Yang Zhao
Spin moiré superlattices (SMSs) have been proposed as a magnetic analog of crystallographic moiré systems and a source of electron minibands offering vector-field moiré tunability and Berry curvature effects. However, it has proven challenging to realize

Platinum Hydride Formation during Cathodic Corrosion in Aqueous Solutions

January 22, 2025
Author(s)
Thomas Hersbach, Angel T. Garcia-Esparza, Selwyn Hanselman, Thijs Hoogenboom, Ian McCrum, Dimitra Anastasiadou, Jeremey Feaster, Thomas Jaramillo, John Vinson, Thomas Kroll, Amanda Garcia, Petr Krtil, Dimosthenis Sokaras, Marc Koper
Cathodic corrosion is an electrochemical phenomenon that dramatically etches metals under commonly used electrocatalytic conditions. Though cathodic corrosion is thought to occur by forming a metal-containing anion, such an ion has not yet been observed

Tuning a magnetic energy scale with pressure and field in UTe2

January 8, 2025
Author(s)
Hyunsoo Kim, I-Lin Liu, Wen-Chen Lin, Yun Eo, Sheng Ran, Nicholas Butch, Johnpierre Paglione
When a fragile ordered state is suppressed to zero temperature, a quantum phase transition occurs, which is often marked by the appearance of unconventional superconductivity. While the quantum critical point can be hidden, the influence of the quantum

Connection between f-electron correlations and magnetic excitations in UTe2

January 4, 2025
Author(s)
Thomas Halloran, Peter Czajka, Gicela Saucedo Salas, Corey Frank, Jose Rodriguez Rivera, Daniel Mazzonne, Jakob Lass, Nicholas Butch
Abstract The detailed anisotropic dispersion of the low-temperature, low-energy magnetic excitations of the candidate spin-triplet superconductor UTe 2 is revealed using inelastic neutron scattering. The magnetic excitations emerge from the Brillouin zone

Time evolution of a pumped molecular magnet - a time resolved inelastic neutron scattering study

January 1, 2025
Author(s)
T. Reeder, Paraj Titum, J. Kindervater, Qiang Ye, Jose Rodriguez Rivera, Yiming Qiu, Nicholas C. Maliszewskyj, T. McQueen, Collin L. Broholm
ntroducing an experimental technique of time-resolved inelastic neutron scattering (TRINS), we explore the time-dependent effects of resonant pulsed microwaves on the molecular magnet Cr8F8Piv16. The octagonal rings of magnetic Cr3+ atoms with

Evidence of Antiferromagnetism in Ultrathin Metallic (111)-Oriented LaNiO3 Films

December 11, 2024
Author(s)
Margaret Kane, Purnima P. Balakrishnan, Okan Koksal, Megan Holtz, Andreas Suter, Michael R. Fitzsimmons, Chao-Yao Yang, Christoph Klewe, Paige Quarterman, Timothy R. Charlton, Andrew Herzing, Zaher Salman, Thomas Prokscha, Rossitza Pentcheva, Alexander Grutter, Yuri Suzuki
Antiferromagnets with exotic spin textures promise low-power spintronic devices with extremely high operating frequencies and resistance to external perturbations. In particular, the combination of highly tunable correlated electron physics, as in complex

Magneto-Ionic Physical Reservoir Computing

December 9, 2024
Author(s)
Md Mahadi Rajib, Dhritiman Bhattacharya, Christopher Jensen, Gong Chen, Fahim F. Chowdhury, Shouvik Sarkar, Kai Liu, Jayasimha Atulashimha
Recent progresses in magneto-ionics offer exciting potentials to leverage its non-linearity, short-term memory, and energy-efficiency to uniquely advance the field of physical reservoir computing. In this work, we experimentally demonstrate the

Synthesis and Characterization of the Novel Breathing Pyrochlore Compound Ba3Tm2Zn5O11

December 6, 2024
Author(s)
Lalit Yadav, Rabindranath Bag, Ramesh Dhakal, Stephen Winter, Jeffrey Rau, Alexander Kolesnikov, Andrey Podlesnyak, Craig Brown, Nicholas Butch, David Graf, Michel Gingras, Sara Haravifard
In this study, a novel material from the rare-earth based breathing pyrochlore family, Ba3Tm2Zn5O11, was successfully synthesized. Powder x-ray diffraction and high-resolution powder neutron diffraction confirmed phase purity and the F ¯43m breathing

Field-Angle Evolution of the Superconducting and Magnetic Phases of UTe2 around the b Axis

November 27, 2024
Author(s)
Sylvia Lewin, Josephine Yu, Corey Frank, David Graf, Patrick Chen, Sheng Ran, Yun Eo, Johnpierre Paglione, S. Raghu, Nicholas Butch
We experimentally determine the bounds of the magnetic-field-induced superconducting and magnetic phases near the crystalline b axis of uranium ditelluride (UTe2). By measuring the magnetoresistance as a function of rotation angle and field strength in

Manipulating Interface Magnetism in Manganite Thin Film Membranes by Substrate Surface Chemistry

November 13, 2024
Author(s)
Purnima P. Balakrishnan, Qinwen Lu, Qing Wang, Shinichiro N. Muramoto, Paige Quarterman, Michael R. Fitzsimmons, Timothy R. Charlton, Xiaofang Zhai, Alexander Grutter
We demonstrate an unexpected substrate dependence of the magnetic properties of complex oxide thin film membranes. While the tunable magnetism of complex oxides is attractive for many applications, device integration has long been limited by the strict
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