Article
Multidisciplinary Sciences
Seung-Hwan Do, Hao Zhang, Travis J. Williams, Tao Hong, V. Ovidiu Garlea, J. A. Rodriguez-Rivera, Tae-Hwan Jang, Sang-Wook Cheong, Jae-Hoon Park, Cristian D. Batista, Andrew D. Christianson
Summary: The study explores the collective quantum effects in quantum materials by investigating the interacting transverse and longitudinal modes in an easy-plane quantum magnet. The experimental and theoretical analysis demonstrates the emergence, decay, and renormalization of a longitudinal mode, with decay being more pronounced at the zone center. The theoretical framework developed here is broadly applicable to anisotropic spin quantum magnets with multiple low energy modes.
NATURE COMMUNICATIONS
(2021)
Article
Chemistry, Multidisciplinary
Liurukara D. Sanjeewa, V. Ovidiu Garlea, Randy S. Fishman, Mahsa Foroughian, Li Yin, Jie Xing, David S. Parker, Tiffany Smith M. Pellizzeri, Athena S. Sefat, Joseph W. Kolis
Summary: In this study, the magnetic phase diagram of the compound CsCo2(MoO4)2(OH) was determined through magnetic and neutron scattering measurements. The magnetic properties of CsCo2(MoO4)2(OH) are strongly influenced by the crystal lattice and can be easily controlled by magnetic fields. The compound exhibits unique magnetic exchange interactions between two types of Co2+ ions. The magnetic structure is antiferromagnetic along the b-axis at TN = 5 K, with two successive metamagnetic transitions observed. The compound shows promising potential for studying new physics related to sawtooth chain magnetism. Rating: 6/10.
MATERIALS CHEMISTRY FRONTIERS
(2023)
Review
Chemistry, Multidisciplinary
Hang Wang, Quanfeng He, Xiang Gao, Yinghui Shang, Wenqing Zhu, Weijiang Zhao, Zhaoqi Chen, Hao Gong, Yong Yang
Summary: Since 2004, the design of high entropy alloys (HEAs) has sparked significant interest in the materials science community due to their exceptional structural and functional properties. By incorporating multiple principal elements into a common lattice, a highly distorted lattice can be created, enabling HEAs to offer a promising combination of mechanical and physical properties that are not typically observed in conventional alloys. This article provides an extensive overview of multifunctional HEAs with severe lattice distortion, including theoretical models, experimental and computational methods, and the impact of lattice distortion on their mechanical, physical, and electrochemical properties. The review aims to stimulate further research into the study of distorted lattices in crystalline solids.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
I. G. Bostrem, E. G. Ekomasov, J. Kishine, A. S. Ovchinnikov, V. E. Sinitsyn
Summary: The emergence of discrete breather excitations in CrNb3S6 is attributed to nonlinearity and discreteness, due to the compound's specific domain structure. The breather modes in this material appear as discrete breather lattice solutions with periods mismatching the system size, and are controlled by the easy-plane single-ion anisotropy intrinsic to the material, with frequencies lying within the linear spin-wave band.
Article
Physics, Multidisciplinary
Renwen Yu, Andrea Konecna, F. Javier Garcia de Abajo
Summary: This study investigates the impact of electron propagation direction on excitations of InAs films in structures with gyrotropic nonreciprocal material characteristics, utilizing electron energy-loss spectroscopy and cathodoluminescence. The results show that the optical field distribution of the sampled resonances can be modified by the magnetic field, resulting in direction-dependent coupling to the electron. This paves the way for using electron microscope spectroscopies to explore near-field characteristics of nonreciprocal systems with high spatial resolution.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Physical
Yunzi Liu, Yong Gao, Jian Chen
Summary: In this study, the interfacial atomic bonding and atom-matching structure of Al atoms on the crystal plane of CoCrFeNi HEA were investigated using first-principles calculations. The results showed a strong interface bonding ability of Al atoms and a phase transition with increasing deposited atoms. Additionally, the study revealed the occurrence of electron cloud and charge transfer at the interface.
Article
Physics, Multidisciplinary
Xiaocui Wu, Nicolas Neel, Mads Brandbyge, Joerg Kroeger
Summary: The abstraction of pyrrolic hydrogen from a single phthalocyanine on graphene turns the molecule into a sensitive probe for graphene phonons. The inelastic electron transport measured with a scanning tunneling microscope across the molecular adsorbate and graphene becomes strongly enhanced for a graphene out-of-plane acoustic phonon mode. Supporting density functional and transport calculations elucidate the underlying physical mechanism.
PHYSICAL REVIEW LETTERS
(2023)
Article
Multidisciplinary Sciences
Ryutaro Okuma, Maiko Kofu, Shinichiro Asai, Maxim Avdeev, Akihiro Koda, Hirotaka Okabe, Masatoshi Hiraishi, Soshi Takeshita, Kenji M. Kojima, Ryosuke Kadono, Takatsugu Masuda, Kenji Nakajima, Zenji Hiroi
Summary: The study reveals the emergence of two-dimensional characteristics in a three-dimensional tetrahedral cluster antiferromagnet due to geometrical frustration, and suggests the occurrence of one-dimensionalization in decoupled layers leading to large spin fluctuations in the classical spin system.
NATURE COMMUNICATIONS
(2021)
Article
Materials Science, Multidisciplinary
Donghwan Kim, Bertrand I. Halperin
Summary: We present two approximation methods for describing the leading behavior of the low-energy tail of the momentum-dependent spectral density A(k, E) and the tunneling density of states D(E) in a system of injected particles interacting with a phonon bath. The imaginary-time-dependent Hartree (ITDH) approximation considers the injection of particles into coherent states of the phonon system and calculates the correlation function C(v) for the initial state. The fixed-wave-function (FWF) approximation assumes that the wave function of the injected particle becomes time-independent while the phonon system continues to evolve. These approximations are used to study the effects of quantum motion of phonons on the calculated D(E) in a one-dimensional continuum model.
Article
Materials Science, Multidisciplinary
Shiyu Zhou, Dmitry Green, Edward D. Dahl, Claudio Chamon
Summary: Researchers built and probed a Z(2) spin liquid on the programmable quantum device D-Wave DW-2000Q, successfully observing transitions between classical eight-vertex and six-vertex states. By designing a specific Hamiltonian and analyzing the device output, they were able to achieve these results and study the classical phase diagram of the system for potential applications in building topological qubits.
Article
Physics, Multidisciplinary
F. Javier Garcia de Abajo, Eduardo J. C. Dias, Valerio Di Giulio
Summary: This study reveals the nonlinear and recoil effects in the interaction between individual low-energy electrons and samples with a discrete number of states. The research highlights the potential of free electrons to control localized excitations and delineates the boundaries of such control.
PHYSICAL REVIEW LETTERS
(2022)
Article
Materials Science, Multidisciplinary
Huijuan Ge, Chengfeng Cui, Hongquan Song, Fuyang Tian
Summary: The lattice distortion of high-entropy carbide ceramics is closely related to the alloying elements, with the Bader atomic radius being an effective descriptor of this distortion. Furthermore, the atomic radius and formation enthalpy of binary carbides may serve as indicators for predicting the formation of single-phase high-entropy carbides.
Article
Materials Science, Multidisciplinary
Jiabin Liu, Long Yuan, Xuan Li, Boqiang Li, Kan Zhao, Haijun Liao, Yuesheng Li
Summary: We demonstrate that YCu3[OH(D)]6.5Br2.5 (YCOB) is a kagome Heisenberg antiferromagnet without evident orphan spins. The mixing of polar OH- and nonpolar Br- at different sites leads to local distortions and the formation of randomly distributed hexagons on the kagome lattice. The study provides insights into the theoretical understanding of gapless quantum spin liquid behavior in YCOB and other relevant materials.
Article
Physics, Multidisciplinary
L. Heinze, H. O. Jeschke, I. I. Mazin, A. Metavitsiadis, M. Reehuis, R. Feyerherm, J. U. Hoffmann, M. Bartkowiak, O. Prokhnenko, A. U. B. Wolter, X. Ding, V. S. Zapf, C. Corvalan Moya, F. Weickert, M. Jaime, K. C. Rule, D. Menzel, R. Valenti, W. Brenig, S. Suellow
Summary: The mineral atacamite Cu2Cl(OH)(3) was studied experimentally and theoretically, revealing a complex evolution of magnetic order with the possibility of a magnetization plateau under the influence of a magnetic field. Theoretical approaches suggest that the magnetization process in atacamite involves a field-driven canting of a 3D network of weakly coupled sawtooth chains, leading to the formation of giant magnetic moments.
PHYSICAL REVIEW LETTERS
(2021)
Article
Materials Science, Multidisciplinary
Rongchun Chen, Yanxia Wang, Lifeng Jiang, Ruonan Min, Huijun Kang, Zongning Chen, Enyu Guo, Xiong Yang, Xue Jiang, Tongmin Wang
Summary: In this study, a new concept for decoupling the Seebeck coefficient and electrical conductivity was demonstrated through entropy engineering. By manipulating the entropy-driven quantum confinement effect and the increasing entropy, low-energy electrons were filtered out and the density of states near the Fermi level rapidly changed. As a result, a high Seebeck coefficient and an optimized figure-of-merit were achieved for MCoSb-based medium-high entropy half-Heusler alloys.
MATERIALS TODAY PHYSICS
(2023)
Article
Physics, Multidisciplinary
Malte C. Tichy, Young-Sik Ra, Hyang-Tag Lim, Clemens Gneiting, Yoon-Ho Kim, Klaus Molmer
NEW JOURNAL OF PHYSICS
(2015)
Article
Optics
Malte C. Tichy
Article
Physics, Multidisciplinary
Mattia Walschaers, Jack Kuipers, Juan-Diego Urbina, Klaus Mayer, Malte Christopher Tichy, Klaus Richter, Andreas Buchleitner
NEW JOURNAL OF PHYSICS
(2016)
Article
Multidisciplinary Sciences
Steffen Weimann, Armando Perez-Leija, Maxime Lebugle, Robert Keil, Malte Tichy, Markus Graefe, Rene Heilmann, Stefan Nolte, Hector Moya-Cessa, Gregor Weihs, Demetrios N. Christodoulides, Alexander Szameit
NATURE COMMUNICATIONS
(2016)
Article
Physics, Multidisciplinary
Adrian J. Menssen, Alex E. Jones, Benjamin J. Metcalf, Malte C. Tichy, Stefanie Barz, W. Steven Kolthammer, Ian A. Walmsley
PHYSICAL REVIEW LETTERS
(2017)
Article
Optics
Malte C. Tichy
JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
(2014)
Article
Physics, Multidisciplinary
Young-Sik Ra, Malte C. Tichy, Hyang-Tag Lim, Osung Kwon, Florian Mintert, Andreas Buchleitner, Yoon-Ho Kim
NEW JOURNAL OF PHYSICS
(2014)
Article
Physics, Multidisciplinary
Mads Kock Pedersen, Jens Jakob W. H. Sorensen, Malte C. Tichy, Jacob F. Sherson
NEW JOURNAL OF PHYSICS
(2014)
Editorial Material
Physics, Multidisciplinary
M. C. Tichy, C. K. Andersen
PHYSICAL REVIEW LETTERS
(2014)
Article
Optics
Zakarya Lasmar, P. Alexander Bouvrie, Adam S. Sajna, Malte C. Tichy, Pawel Kurzynski
Article
Optics
Malte C. Tichy, Klaus Molmer
Article
Optics
Young-Sik Ra, Malte C. Tichy, Hyang-Tag Lim, Clemens Gneiting, Klaus Molmer, Andreas Buchleitner, Yoon-Ho Kim
Article
Optics
P. Alexander Bouvrie, Malte C. Tichy, Itzhak Roditi
Article
Optics
P. Alexander Bouvrie, Malte C. Tichy, Klaus Molmer
Article
Optics
Malte C. Tichy, Chae-Yeun Park, Minsu Kang, Hyunseok Jeong, Klaus Molmer