Article
Multidisciplinary Sciences
Gang Shi, Fan Gao, Zhilin Li, Rencong Zhang, Igor Gornyi, Dmitri Gutman, Yongqing Li
Summary: The study combines quantum interference, electron-electron interaction (EEI), and disorder to investigate the magnetotransport properties of topological insulators. It is found that magnetoconductance can be significantly enhanced by second-order interference and EEI effects, in contrast to systems with orthogonal symmetry. This study reveals important insights into the complex electronic processes in topological insulators through magnetoconductance analysis.
NATURE COMMUNICATIONS
(2023)
Article
Physics, Multidisciplinary
Hailong Li, Hua Jiang, Chui-Zhen Chen, X. C. Xie
Summary: The search for an axion insulator state in the ferromagnetic-3D topological insulator (TI) heterostructure and MnBi2Te4 has attracted intense interest recently. A systematic investigation of the disorder-induced phase transition of the axion insulator state in a 3D TI with antiparallel magnetization alignment surfaces reveals a 2D disorder-induced phase transition on the surfaces of the 3D TI. A phenomenological theory maps the random mass Dirac Hamiltonian of the axion insulator state into the Chalker-Coddington network model, providing a way to probe the axion insulator state by investigating the universal signature of such a phase transition.
PHYSICAL REVIEW LETTERS
(2021)
Article
Chemistry, Multidisciplinary
Gufei Zhang, Ramiz Zulkharnay, Xiaoxing Ke, Meiyong Liao, Liwang Liu, Yujie Guo, Yejun Li, Horst-Guenter Rubahn, Victor V. Moshchalkov, Paul W. May
Summary: By investigating electrical transport phenomena, it is found that diamond nanorings (DNRs) transform into bosonic semiconductors upon the formation of Cooper pairs, exhibiting a sharp resistance increase and a giant negative magnetoresistance. In contrast, diamond half-loops (DHLs) undergo a metal-superconductor transition. This finding reveals the potential use of DNRs in manipulating Cooper pairs in superconducting quantum devices.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Gaurav Chaudhary, Michael Levin, Aashish A. Clerk
Summary: The study addresses the characterization of band topology in dynamically stable quadratic bosonic Hamiltonians that do not conserve particle number by mapping them to particle-number-conserving Hamiltonians. It shows that such mapping can always be constructed for bosons, unlike in generic fermionic pairing Hamiltonians. The research also explores the classification of particle-nonconserving bosonic Hamiltonians using known approaches for fermionic models, and provides a straightforward method for identifying and computing appropriate topological invariants.
Article
Chemistry, Multidisciplinary
Yu Fu, Jing Li, Jules Papin, Paul Noel, Salvatore Teresi, Maxen Cosset-Cheneau, Cecile Grezes, Thomas Guillet, Candice Thomas, Yann-Michel Niquet, Philippe Ballet, Tristan Meunier, Jean-Philippe Attane, Albert Fert, Laurent Vila
Summary: Spin-orbit effects in topological insulators and at Rashba interfaces have led to various newly discovered effects. In this study, a bilinear magnetoresistance phenomenon was observed in strained HgTe, and its amplitude and sign could be controlled by adjusting the contributions from opposite surfaces using an electric gate.
Article
Chemistry, Multidisciplinary
Sonali Baral, Indu Rajput, Mukesh Kumar Dasoundhi, Devendra Kumar, Archana Lakhani
Summary: In this study, by manipulating the growth kinetics, the researchers have successfully controlled defects and achieved Bi2Te3 single crystals dominated by either electrons or holes using the modified Bridgman method. The correlation between structural defects and the type of dominant charge carriers in crystals was investigated using X-ray diffraction and Hall resistivity measurements. The alteration of charge carriers from electrons to holes significantly enhanced the magnetoresistance, which can be attributed to the 2D multichannel quantum coherent conduction mechanism.
MATERIALS TODAY CHEMISTRY
(2023)
Article
Astronomy & Astrophysics
R. de Oliveira Junior, G. Alencar
Summary: In this paper, a covariant version of multi-localizing q-form fields is proposed, showing that all q-form fields have an ultralight mode with the same mass as the gravitational one. This suggests that there is an universal mass scale for the ultralight modes of the bosonic fields.
Article
Physics, Applied
Ning Cao, Xue Chen, Xinrun Mi, Saisai Qiao, Liyu Zhang, Kunling Peng, Mingquan He, Aifeng Wang, Yisheng Chai, Xiaoyuan Zhou
Summary: In this study, we conducted comprehensive research on MnBi2Te4 single crystals and found that the direction of the magnetic field has significant effects on the critical field values and magnetic structure of this compound, resulting in different magnetotransport behaviors. By utilizing field-driven reorientation transitions, we estimated the antiferromagnetic interlayer exchange coupling and uniaxial magnetic anisotropy, and obtained a Hamiltonian that can well explain the experimental data through Monte Carlo simulations.
APPLIED PHYSICS LETTERS
(2022)
Article
Physics, Applied
Rui Pang, Jianjun Tian, Chaoyang Kang, Longsheng Wang, Haiyang Gu, Mengna Shen, Limin She, Yeheng Song, Xiansheng Liu, Weifeng Zhang
Summary: This paper reports the transport properties of bulk Ta1.04Ru0.78Te4 single crystals. The samples exhibited metallic behavior with a resistivity upturn below approximately 8.6 K, which may be attributed to quantum correction effects. The weakly nonlinear Hall resistivity suggests a p-type and multiband feature, and the magnetoresistance and violation of Kohler's rule further indicate the presence of weak antilocalization in the Ta1.04Ru0.78Te4 single crystal. These findings provide insights into the quantum transport properties of Ta1.04Ru0.78Te4 single crystals for future device design.
APPLIED PHYSICS LETTERS
(2023)
Article
Chemistry, Physical
Rahul Singh, Shiv Kumar, A. Jain, Mahima Singh, Labanya Ghosh, A. Singh, Soma Banik, A. Lakhani, S. Patil, E. F. Schwier, K. Shimada, S. M. Yusuf, Sandip Chatterjee
Summary: The topological insulators Bi2-xFexSe3-xSx were investigated using various techniques, revealing a negative giant magneto-resistance (MR) effect with parallel electric and magnetic fields under Fe and S doping. The magnetic ordering behavior was explained by both surface and bulk interactions. ARPES study and the presence of quantum oscillations supported the preservation of topological surface properties with co-doping of Fe and S.
JOURNAL OF MATERIOMICS
(2022)
Article
Chemistry, Multidisciplinary
Federico Binda, Stefano Fedel, Santos Francisco Alvarado, Paul Noel, Pietro Gambardella
Summary: The study investigates the spin-orbit torques (SOTs) and spin Hall magnetoresistance generated by Bi0.9Sb0.1(0001) when coupled with FeCo, confirming its effectiveness as a spin-injector material. The research finds that charge-to-spin conversion in single-crystal Bi0.9Sb0.1(0001) is isotropic despite the strong anisotropy of the topological surface states. Additionally, the damping-like SOT displays non-monotonic temperature dependence, with a minimum occurring at 20 K.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Multidisciplinary
Zheyan Wan, Juven Wang, Xiao-Gang Wen
Summary: This article studies bosonic systems on a space-time lattice and introduces the concept of branch-independent bosonic (BIB) systems. It is found that invertible topological orders in branch-independent systems differ from those in generic lattice bosonic systems. The branch dependence on a lattice is related to the orthonormal frame of smooth manifolds and the framing anomaly of continuum field theories.
Article
Materials Science, Multidisciplinary
Jahan Claes, Taylor L. Hughes
Summary: This paper discusses the non-Hermitian skin effect, extends the definition of the winding number to disordered NH systems, and verifies that the real-space formula can still predict the NH skin effect.
Article
Materials Science, Multidisciplinary
Yi-Fei Huang, Wen-Liang Zhu, Yi-Yan Wang, Qing-Xin Dong, Li-Bo Zhang, Chen-Sheng Li, Hao OuYang, Zhi-An Ren, Gen-Fu Chen
Summary: Our experimental results on MoGe2 show metallic behavior with special resistivity effects under magnetic fields, indicating that the material is a topological semimetal rather than a topological insulator.
Article
Physics, Condensed Matter
Yan He, Chih-Chun Chien
Summary: This article analyzes the topological classifications of quadratic bosonic systems based on the symmetries of the dynamic matrices and the effective Hamiltonians from the Lindblad equations of open systems. It is found that the system-reservoir coupling can lead to different classifications.
JOURNAL OF PHYSICS-CONDENSED MATTER
(2022)
Article
Physics, Multidisciplinary
Andrea Scaramucci, Hiroshi Shinaoka, Maxim V. Mostovoy, Markus Mueller, Christopher Mudry, Matthias Troyer, Nicola A. Spaldin
Article
Multidisciplinary Sciences
J-Z Ma, S. M. Nie, C. J. Yi, J. Jandke, T. Shang, M. Y. Yao, M. Naamneh, L. Q. Yan, Y. Sun, A. Chikina, V. N. Strocov, M. Medarde, M. Song, Y-M Xiong, G. Xu, W. Wulfhekel, J. Mesot, M. Reticcioli, C. Franchini, C. Mudry, M. Mueller, Y. G. Shi, T. Qian, H. Ding, M. Shi
Article
Multidisciplinary Sciences
Philipp Werner, Martin Eckstein, Markus Mueller, Gil Refael
NATURE COMMUNICATIONS
(2019)
Article
Biochemistry & Molecular Biology
Markus Mueller, Peter M. Derlet, Christopher Mudry, Gabriel Aeppli
Article
Physics, Multidisciplinary
Z. Guguchia, D. Das, C. N. Wang, T. Adachi, N. Kitajima, M. Elender, F. Brueckner, S. Ghosh, V Grinenko, T. Shiroka, M. Mueller, C. Mudry, C. Baines, M. Bartkowiak, Y. Koike, A. Amato, J. M. Tranquada, H. H. Klauss, C. W. Hicks, H. Luetkens
PHYSICAL REVIEW LETTERS
(2020)
Article
Physics, Applied
Yves Blickenstorfer, Markus Mueller, Roland Dreyfus, Andreas Michael Reichmuth, Christof Fattinger, Andreas Frutiger
Summary: Diffractometric biosensing is a promising technology that overcomes limitations of refractometric biosensors, but it lacks general quantitative analysis, hindering its wider recognition and comparison with other techniques.
PHYSICAL REVIEW APPLIED
(2021)
Article
Chemistry, Physical
Junzhang Ma, Simin Nie, Xin Gui, Muntaser Naamneh, Jasmin Jandke, Chuanying Xi, Jinglei Zhang, Tian Shang, Yimin Xiong, Itzik Kapon, Neeraj Kumar, Yona Soh, Daniel Gosalbez-Martinez, Oleg Yazyev, Wenhui Fan, Hannes Huebener, Umberto De Giovannini, Nicholas Clark Plumb, Milan Radovic, Michael Andreas Sentef, Weiwei Xie, Zhijun Wang, Christopher Mudry, Markus Mueller, Ming Shi
Summary: Using angle-resolved photoemission spectroscopy, the authors detected mobile bound states of excitons in quasi-one-dimensional metallic TaSe3, providing evidence for the elusive exciton mobility in metals.
Article
Materials Science, Multidisciplinary
Jiajun Li, Markus Muller, Aaram J. Kim, Andreas M. Lauchli, Philipp Werner
Summary: Recent advances in ultrafast pump-probe spectroscopy have allowed the exploration of hidden phases of correlated matter, including light-induced superconducting states. A new type of chiral superconducting phase has been induced in frustrated Mott insulators through photodoping, forming a condensate of doublons and holons. This metastable phase features a spatially varying order parameter with a 120 degrees phase twist, breaking time-reversal and inversion symmetry. The presented results demonstrate the chiral nature of the light-induced superconducting state and its distinguishing properties, which can be observed in pump-probe experiments.
Article
Optics
Keita Omiya, Markus Muller
Summary: We study the nature of the ergodicity-breaking quantum many-body scar states in the PXP model and reveal a common structure that gives rise to these states. We provide an extension of the PXP model that can host exact quantum scars and show that existing scar-stabilizing extensions can be understood within this framework. The exact scar states are obtained as large spin states of explicitly constructed pseudospins, and the quasiperiodic motion is shown to be the projection of the large pseudospin's precession onto the Rydberg-constrained subspace.
Article
Materials Science, Multidisciplinary
A. Beckert, M. Grimm, R. Hermans, J. R. Freeman, E. H. Linfield, A. G. Davies, M. Muller, H. Sigg, S. Gerber, G. Matmon, G. Aeppli
Summary: The crystal field energy levels and magnetic moments of the insulating rare-earth magnet LiY1-xHoxF4 were investigated, including the hyperfine corrections, and the far-infrared, low-temperature refractive index of the material was determined.
Article
Quantum Science & Technology
Manuel Grimm, Adrian Beckert, Gabriel Aeppli, Markus Mueller
Summary: The proposed scheme for universal quantum computing is based on Kramers rare-earth ions, utilizing their nuclear spins as passive qubits and actively switching on qubits optically. The implementation of controlled NOT (CNOT) gates relies on the magnetic dipole interaction between excited crystal field states. Compared to other proposals, such as the Si:P proposal, this scheme shows significantly improved gate times for CNOT gates.
Article
Physics, Multidisciplinary
Andrea Scaramucci, Hiroshi Shinaoka, Maxim Mostovoy, Rui Lin, Christopher Mudry, Markus Mueller
PHYSICAL REVIEW RESEARCH
(2020)
Article
Materials Science, Multidisciplinary
Ivo A. Maceira, Frederic Mila, Markus Mueller
Article
Materials Science, Multidisciplinary
A. Uzair, K. Sabeeh, Markus Mueller
Article
Materials Science, Multidisciplinary
Ines Rodriguez-Arias, Markus Mueller, Alberto Rosso, Andrea De Luca
