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The strain fields of periodically buckled graphene induce a periodic pseudo-magnetic field (PMF) that modifies the electronic band structure. From the geometry, amplitude, and period of the periodic pseudo-magnetic field, we determine the…

介观与纳米尺度物理 · 物理学 2020-12-29 S. P. Milovanović , M. Anđelković , L. Covaci , F. M. Peeters

We analyze the mechanical deformations that are required to create uniform pseudomagnetic fields in graphene. It is shown that, if a ribbon is bent in-plane into a circular arc, this can lead to fields exceeding 10T, which is sufficient for…

介观与纳米尺度物理 · 物理学 2010-11-12 F. Guinea , A. K. Geim , M. I. Katsnelson , K. S. Novoselov

Nonuniform elastic strain is known to induce pseudo-Landau levels in Dirac materials. But these pseudo-Landau levels are hardly resolvable in an analytic fashion when the strain is strong, because of the emerging complicated space…

介观与纳米尺度物理 · 物理学 2023-06-05 Tianyu Liu , Hai-Zhou Lu

We show that the low-energy electronic structure of graphene under a one-dimensional inhomogeneous magnetic field can be mapped into that of graphene under an electric field or vice versa. As a direct application of this transformation, we…

介观与纳米尺度物理 · 物理学 2010-05-31 Liang Zheng Tan , Cheol-Hwan Park , Steven G. Louie

The pseudo-magnetic field generated by mechanical strain in graphene can have dramatic consequences on the behavior of electrons and holes. Here we show that pseudo-magnetic field fluctuations present in crumpled graphene can induce…

We propose a novel conceptual design for a graphene-based quantum engine, driven by a superposition of mechanical strain and an external magnetic field. Engineering of strain in a nanoscale graphene flake creates a gauge field with an…

介观与纳米尺度物理 · 物理学 2015-06-02 Francisco J. Peña , Enrique Muñoz

Moir'e patterns in the pseudo-magnetic field and in the strain profile of graphene (GE) when put on top of a hexagonal lattice substrate are predicted from elasticity theory. %which are confirmed by atomistic simulations. The van der Waals…

介观与纳米尺度物理 · 物理学 2015-06-22 M. Neek-Amal , F. M. Peeters

Many intriguing phenomena occur for electrons under strong magnetic fields. Recently, it was proposed that an appropriate strain texture in graphene can induce a synthetic gauge field, in which the electrons behave like in a real magnetic…

介观与纳米尺度物理 · 物理学 2019-05-01 Xinhua Wen , Chunyin Qiu , Yajuan Qi , Liping Ye , Manzhu Ke , Fan Zhang , Zhengyou Liu

The unique optical properties of graphene, with broadband absorption and ultrafast response, make it a critical component of optoelectronic and spintronic devices. Using time-resolved momentum microscopy with high data rate and high dynamic…

Networks of graphene-based topological domain walls function as nano-scale interferometers of zero-line modes, with magnetic field and(or) scalar potential as the controlling parameters. In the absence of externally applied magnetic or…

介观与纳米尺度物理 · 物理学 2019-09-04 Ma Luo

As a canonical response to the applied magnetic field, the electronic states of a metal are fundamentally reorganized into Landau levels. In Dirac metals, Landau levels can be expected without magnetic fields, provided that an inhomogeneous…

介观与纳米尺度物理 · 物理学 2021-08-13 Zheng Shi , Hai-Zhou Lu , Tianyu Liu

Single-layer graphenes subject to periodic lateral strains are artificial crystals that can support boundary spectra with an intrinsic polarity. These are analyzed by comparing the effects of periodic magnetic fields and strain-induced…

介观与纳米尺度物理 · 物理学 2022-05-04 Vo Tien Phong , E. J. Mele

We investigate the influence of gauge fields induced by strain on the supercurrent passing through the graphene-based Josephson junctions. We show in the presence of a constant pseudomagnetic field ${\bf B}_S$ originated from an arc-shape…

介观与纳米尺度物理 · 物理学 2018-11-21 Hadi Khanjani , Ali G. Moghaddam

Very recently, the standard description of electrons in strained graphene has been completed by the explicit inclusion of the lattice deformation. Here, the effect of these lattice corrections is taken into account to find the mechanical…

介观与纳米尺度物理 · 物理学 2013-03-08 M. Oliva-Leyva , Gerardo G. Naumis

Strain-induced pseudo-magnetic fields can mimic real magnetic fields to generate a zero-magnetic-field analogue of the Landau levels (LLs), i.e., the pseudo-LLs, in graphene. The distinct nature of the pseudo-LLs enables one to realize…

介观与纳米尺度物理 · 物理学 2022-08-17 Yi-Wen Liu , Zhen Zhan , Zewen Wu , Chao Yan , Shengjun Yuan , Lin He

Strain engineering of graphene takes advantage of one of the most dramatic responses of Dirac electrons enabling their manipulation via strain-induced pseudo-magnetic fields. Numerous theoretically proposed devices, such as resonant…

介观与纳米尺度物理 · 物理学 2020-06-24 R. Banerjee , V. -H. Nguyen , T. Granzier-Nakajima , L. Pabbi , A. Lherbier , A. R. Binion , J. -C. Charlier , M. Terrones , E. W. Hudson

Transport properties through wide and short ballistic graphene junctions are studied in the presence of arbitrary dopings and magnetic fields. No dependence on the magnetic field is observed at the Dirac point for any current cumulant, just…

介观与纳米尺度物理 · 物理学 2007-05-23 Elsa Prada , Pablo San-Jose , Bernhard Wunsch , Francisco Guinea

Superconductivity in single-layer graphene has attracted considerable interest. Here, using the determinant quantum Monte Carlo method, we study transitions of superconductivity and magnetism in a monolayer graphene with a special periodic…

强关联电子 · 物理学 2024-12-31 Jingyao Meng , Runyu Ma , Tianxing Ma , Hai-Qing Lin

Pseudo-magnetic field (PMF) in deformed graphene has been proposed as a promising and flexible method to quantum-confine electronic states and create gaps in the local density of states. Motivated by this perspective, we numerically analyze…

介观与纳米尺度物理 · 物理学 2022-03-14 Davide Giambastiani , Francesco Colangelo , Alessandro Tredicucci , Stefano Roddaro , Alessandro Pitanti

The electronic properties of a triaxially strained hexagonal graphene flake with either armchair or zig-zag edges are investigated using molecular dynamics simulations and tight-binding calculations. We found that: i) the pseudo-magnetic…

介观与纳米尺度物理 · 物理学 2015-06-19 M. Neek-Amal , L. Covaci , Kh. Shakouri , F. M. Peeters