Found 11 papers in prb
Date of feed: Sat, 16 Mar 2024 04:16:57 GMT

Search terms: (topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+)|(flatband)|(flat.{1}band)|(LK.{1}99)

Melting properties of the refractory metals V and W and the binary VW alloy fully from first principles
Li-Fang Zhu, Prashanth Srinivasan, Yilun Gong, Tilmann Hickel, Blazej Grabowski, Fritz Körmann, and Jörg Neugebauer
Author(s): Li-Fang Zhu, Prashanth Srinivasan, Yilun Gong, Tilmann Hickel, Blazej Grabowski, Fritz Körmann, and Jörg Neugebauer

We investigate the melting properties of the bcc refractory metals V and W, and the disordered equiatomic VW alloy from first principles. We show that thermal vibrations have a large impact on the electronic density of states (DOS) and thus considerably affect the electronic contribution to the free…


[Phys. Rev. B 109, 094110] Published Fri Mar 15, 2024

Analytical model and dynamical phase-field simulation of terahertz transmission across ferroelectrics
Taorui Chen, Bo Wang, Yujie Zhu, Shihao Zhuang, Long-Qing Chen, and Jia-Mian Hu
Author(s): Taorui Chen, Bo Wang, Yujie Zhu, Shihao Zhuang, Long-Qing Chen, and Jia-Mian Hu

We theoretically investigate the steady-state transmission of continuous terahertz (THz) wave across a freestanding ferroelectric slab. Based on the Landau-Ginzburg-Devonshire theory of ferroelectrics and the coupled equations of motion for polarization and electromagnetic (EM) waves, we derive the …


[Phys. Rev. B 109, 094305] Published Fri Mar 15, 2024

Finite-displacement Boltzmann transport theory reveals the detrimental effects of high-frequency normal modes on mobility
Zachary J. Knepp and Lisa A. Fredin
Author(s): Zachary J. Knepp and Lisa A. Fredin

Lattice vibrations can greatly reduce the charge-carrier mobilities of organic semiconductors by introducing dynamic structural disorder. The low-frequency regime is expected to contribute the most to this disorder since these vibrational modes result in the largest structural distortions and electr…


[Phys. Rev. B 109, 094307] Published Fri Mar 15, 2024

Kitaev-Heisenberg model on the star lattice: From chiral Majorana fermions to chiral triplons
P. d'Ornellas and J. Knolle
Author(s): P. d'Ornellas and J. Knolle

Recently, the Kitaev Heisenberg model has attracted considerable interest as a description of Kitaev materials. On the honeycomb lattice, it has a phase diagram containing two spin-liquid and four magnetically ordered phases. Here, the authors consider this model on a lattice that breaks bipartite symmetry, frustrating the formation of antiferromagnetic order. Using mean field theory and DMRG, they find that this leads to the formation of two novel valence bond solid phases with a rich topological phase diagram and protected edge modes.


[Phys. Rev. B 109, 094421] Published Fri Mar 15, 2024

Twofold topological phase transitions induced by third-nearest-neighbor hoppings in one-dimensional chains
Yonatan Betancur-Ocampo, B. Manjarrez-Montañez, A. M. Martínez-Argüello, and Rafael A. Méndez-Sánchez
Author(s): Yonatan Betancur-Ocampo, B. Manjarrez-Montañez, A. M. Martínez-Argüello, and Rafael A. Méndez-Sánchez

Strong long-range hoppings up to third-nearest neighbors may induce a topological phase transition in one-dimensional chains. Unlike the Su-Schrieffer-Heeger model, this transition from trivial to topological phase occurs with the emergence of a pseudospin valley structure and a twofold nontrivial t…


[Phys. Rev. B 109, 104111] Published Fri Mar 15, 2024

Photocurrent generation in solids via linearly polarized laser
Amar Bharti and Gopal Dixit
Author(s): Amar Bharti and Gopal Dixit

To add to the rapidly progressing field of ultrafast photocurrent, we propose a universal method to generate photocurrent in normal and topological materials using a pair of multicycle linearly polarized laser pulses. The interplay of the fundamental and its second harmonic pulses is studied for the…


[Phys. Rev. B 109, 104309] Published Fri Mar 15, 2024

Rotation of gap nodes in the topological superconductor ${\mathrm{Cu}}_{x}{(\mathrm{PbSe})}_{5}{({\mathrm{Bi}}_{2}{\mathrm{Se}}_{3})}_{6}$
Mahasweta Bagchi, Jens Brede, Aline Ramires, and Yoichi Ando
Author(s): Mahasweta Bagchi, Jens Brede, Aline Ramires, and Yoichi Ando

Among the family of odd-parity topological superconductors derived from ${\mathrm{Bi}}_{2}{\mathrm{Se}}_{3}$, ${\mathrm{Cu}}_{x}{(\mathrm{PbSe})}_{5}{({\mathrm{Bi}}_{2}{\mathrm{Se}}_{3})}_{6}$ (CPSBS) has been elucidated to have gap nodes. Although the nodal gap structure has been established by spe…


[Phys. Rev. B 109, 104507] Published Fri Mar 15, 2024

Extraordinary suppression of the laser heating effect in ${\mathrm{ZrTe}}_{3}$ under pressure revealed by ultrafast spectroscopy
Kai Zhang, Jiafeng Xie, Jin Yang, Tianwu Wang, Fuhai Su, Yirong Wu, and Guangyou Fang
Author(s): Kai Zhang, Jiafeng Xie, Jin Yang, Tianwu Wang, Fuhai Su, Yirong Wu, and Guangyou Fang

Photocarrier dynamics of the ${\mathrm{ZrTe}}_{3}$ under pressure are investigated using optical pump-probe (OPOP) spectroscopy in combination with a diamond anvil cell. A prominent laser heating effect is manifested, characterized by significant changes in the profiles and an elongation of the echo…


[Phys. Rev. B 109, 115130] Published Fri Mar 15, 2024

Evolution of the confined states in graphene nanobubbles
Zewen Wu, Zhen Zhan, Jose Angel Silva-Guillén, Francisco Guinea, Mikhail I. Katsnelson, and Shengjun Yuan
Author(s): Zewen Wu, Zhen Zhan, Jose Angel Silva-Guillén, Francisco Guinea, Mikhail I. Katsnelson, and Shengjun Yuan

In this study, we use a full tight-binding model to explore the behavior of graphene nanobubbles between the interface of twisted bilayer graphene (TBG-$1.{05}^{∘}$), uncovering the simultaneous existence of confined states and pseudo-Landau level (pLL) states under minor strain conditions. We find …


[Phys. Rev. B 109, 115420] Published Fri Mar 15, 2024

Nonadiabatic topological transfer in a nanomechanical phononic lattice
Tian Tian, Han Cai, Liang Zhang, Yichuan Zhang, Chang-Kui Duan, and Jingwei Zhou
Author(s): Tian Tian, Han Cai, Liang Zhang, Yichuan Zhang, Chang-Kui Duan, and Jingwei Zhou

Topologically protected boundary transport is a promising route to realize robust quantum manipulation between distant nodes. Conventional topological transports require a long transmission time to meet adiabatic evolution, which unfortunately becomes a significant obstacle for practical quantum sys…


[Phys. Rev. B 109, 125123] Published Fri Mar 15, 2024

Graph morphology of non-Hermitian bands
Yuncheng Xiong and Haiping Hu
Author(s): Yuncheng Xiong and Haiping Hu

Non-Hermitian systems exhibit diverse graph patterns of energy spectra under open boundary conditions. Here, we present an algebraic framework to comprehensively characterize the spectral geometry and graph topology of non-Bloch bands. Using a locally defined potential function, we unravel the spect…


[Phys. Rev. B 109, L100301] Published Fri Mar 15, 2024

Found 2 papers in prl
Date of feed: Sat, 16 Mar 2024 04:16:56 GMT

Search terms: (topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+)|(flatband)|(flat.{1}band)|(LK.{1}99)

Electrical Control of Spin and Valley in Spin-Orbit Coupled Graphene Multilayers
Taige Wang, Marc Vila, Michael P. Zaletel, and Shubhayu Chatterjee
Author(s): Taige Wang, Marc Vila, Michael P. Zaletel, and Shubhayu Chatterjee

Electrical control of magnetism has been a major technological pursuit of the spintronics community, owing to its far-reaching implications for data storage and transmission. Here, we propose and analyze a new mechanism for electrical switching of isospin, using chiral-stacked graphene multilayers, …


[Phys. Rev. Lett. 132, 116504] Published Fri Mar 15, 2024

Polarization and Weak Topology in Chern Insulators
Sachin Vaidya, Mikael C. Rechtsman, and Wladimir A. Benalcazar
Author(s): Sachin Vaidya, Mikael C. Rechtsman, and Wladimir A. Benalcazar

Chern insulators, and more broadly, topological insulators, present an obstruction to the construction of exponentially localized electronic Wannier functions. This implies a fundamental difficulty in determining whether such insulators exhibit electric polarization. Here, we show that these insulat…


[Phys. Rev. Lett. 132, 116602] Published Fri Mar 15, 2024

Found 1 papers in pr_res
Date of feed: Sat, 16 Mar 2024 04:16:56 GMT

Search terms: (topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+)|(flatband)|(flat.{1}band)|(LK.{1}99)

Multiscale defect cluster excitations in the melting transitions of two-dimensional Yukawa systems
Yen Chiu, Hao-Wei Hu, Yun-Xuan Zhang, and Lin I
Author(s): Yen Chiu, Hao-Wei Hu, Yun-Xuan Zhang, and Lin I

In this work, we numerically demonstrate and classify the intermittently emerged multiscale defect clusters (DCs) composed of few to tens of disclinations, in the two-stage solid-hexatic-liquid melting transition of a two-dimensional Yukawa system. We uncover the topological pathways for their forma…


[Phys. Rev. Research 6, 013288] Published Fri Mar 15, 2024

Found 1 papers in science-adv
Date of feed: Fri, 15 Mar 2024 19:08:07 GMT

Search terms: (topolog[a-z]+)|(graphit[a-z]+)|(rhombohedr[a-z]+)|(graphe[a-z]+)|(chalcog[a-z]+)|(landau)|(weyl)|(dirac)|(STM)|(scan[a-z]+ tunne[a-z]+ micr[a-z]+)|(scan[a-z]+ tunne[a-z]+ spectr[a-z]+)|(scan[a-z]+ prob[a-z]+ micr[a-z]+)|(MoS.+\d+|MoS\d+)|(MoSe.+\d+|MoSe\d+)|(MoTe.+\d+|MoTe\d+)|(WS.+\d+|WS\d+)|(WSe.+\d+|WSe\d+)|(WTe.+\d+|WTe\d+)|(Bi\d+Rh\d+I\d+|Bi.+\d+.+Rh.+\d+.+I.+\d+.+)|(BiTeI)|(BiTeBr)|(BiTeCl)|(ZrTe5|ZrTe.+5)|(Pt2HgSe3|Pt.+2HgSe.+3)|(jacuting[a-z]+)|(flatband)|(flat.{1}band)|(LK.{1}99)

Lanthanide transport in angstrom-scale MoS2-based two-dimensional channels
Mingzhan Wang, Qinsi Xiong, Maoyu Wang, Nicholas H. C. Lewis, Dongchen Ying, Gangbin Yan, Eli Hoenig, Yu Han, One-Sun Lee, Guiming Peng, Hua Zhou, George C. Schatz, Chong Liu
Science Advances, Volume 10, Issue 11, March 2024.