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Voltage-driven 180$^\circ$ magnetization switching without electric current provides the possibility for revolutionizing the spintronics. We demonstrated the voltage-driven charge-mediated 180$^\circ$ magnetization switching at room…

材料科学 · 物理学 2017-09-12 Min Yi , Hongbin Zhang , Bai-Xiang Xu

Manipulating bosonic condensates with electric fields is very challenging as the electric fields do not directly interact with the neutral particles of the condensate. Here we demonstrate a simple electric method to tune the vorticity of…

\b{eta}-PdBi2 has attracted much attention for its prospective ability to possess simultaneously topological surface and superconducting states due to its unprecedented spin-orbit interaction (SOC). Whereas most works have focused solely on…

Transition metal dichalcogenides possess valley pseudospin, enabling coupling between photon spin and electron spin for classical and quantum information processing. However, rapid valley-dephasing processes have impeded the development of…

Chirality is a fundamental property of great importance in physics, chemistry, and biology, and has recently been found to generate unexpected spin polarization for electrons passing through organic molecules, known as chirality-induced…

介观与纳米尺度物理 · 物理学 2024-01-25 Qun Yang , Yongkang Li , Claudia Felser , Binghai Yan

Spin-polarized scanning tunneling microscopy investigations reveal a significant increase of the magnetic period of spin spirals in three-atomic-layer-thick Fe films on Ir(111), from about 4nm at 8K to about 65nm at room temperature. We…

介观与纳米尺度物理 · 物理学 2017-07-26 Aurore Finco , Levente Rózsa , Pin-Jui Hsu , André Kubetzka , Elena Vedmedenko , Kirsten von Bergmann , Roland Wiesendanger

The development of a spintronics device relies on efficient generation of spin polarized currents and their electric field controlled manipulation. While observation of exceptionally long spin relaxation lengths make graphene an intriguing…

We investigate the low-temperature magneto-transport properties of individual Ge/Si core/shell nanowires. Negative magneto-conductance was observed, which is a signature of one-dimensional weak antilocalization of holes in the presence of…

介观与纳米尺度物理 · 物理学 2010-08-12 Xiao-Jie Hao , Tao Tu , Gang Cao , Cheng Zhou , Hai-Ou Li , Guang-Can Guo , Wayne Y. Fung , Zhongqing Ji , Guo-Ping Guo , Wei Lu

Discovering and engineering spin-polarised surface states in the electronic structures of condensed matter systems is a crucial first step in development of spintronic devices, wherein spin-polarised bands crossing the Fermi level can…

The emerging field of spinoptronics has a potential to supersede the functionality of modern electronics, while a proper description of strong light-matter coupling pose the most intriguing questions from both fundamental scientific and…

介观与纳米尺度物理 · 物理学 2016-10-19 D. Yudin , O. V. Kibis , I. A. Shelykh

Electrical generation and detection of pure spin currents without the need of magnetic materials are key elements for the realization of full electrically controlled spintronic devices. In this framework, achieving a large spin-to-charge…

介观与纳米尺度物理 · 物理学 2017-11-23 Wenjing Yan , Edurne Sagasta , Mário Ribeiro , Yasuhiro Niimi , Luis E. Hueso , Fèlix Casanova

We demonstrate that thermoelectric currents in superconducting bilayers with a spin-active interface are controlled by the two competing processes. On one hand, spin-sensitive quasiparticle scattering at such interface generates…

超导电性 · 物理学 2015-02-16 Mikhail S. Kalenkov , Andrei D. Zaikin

We consider thermoelectric transport properties of the edge states of a two dimensional topological insulator in a double quantum point contact geometry coupled to two thermally biased reservoirs. Both spin-preserving and spin-flipping…

介观与纳米尺度物理 · 物理学 2016-04-13 Flavio Ronetti , Luca Vannucci , Giacomo Dolcetto , Matteo Carrega , Maura Sassetti

Many Heusler compounds are predicted to be ferromagnetic half metals in the bulk, which makes them promising compounds for spintronics. However, for devices the transport spin polarization at specific interfaces requires optimization. We…

介观与纳米尺度物理 · 物理学 2019-04-18 C. Lidig , J. Cramer , L. Weißhoff , T. R. Thomas , T. Kessler , M. Kläui , M. Jourdan

The behavior of ultracold atomic gases depends crucially on the two-body scattering properties of these systems. We develop a multichannel scattering theory for atom-atom collisions in quasi-one-dimensional (quasi-1D) geometries such as…

凝聚态物理 · 物理学 2009-11-10 Brian E. Granger , D. Blume

A systematic microscopic theory of magnetically induced ferroelectricity and lattice modulation is presented for all electron configurations of Mott-insulating transition-metal oxides. Various mechanisms of polarization are identified in…

强关联电子 · 物理学 2009-11-13 Chenglong Jia , Shigeki Onoda , Naoto Nagaosa , Jung Hoon Han

We report on the fabrication and transport characterization of atomically-precise single molecule devices consisting of a magnetic porphyrin covalently wired by graphene nanoribbon electrodes. The tip of a scanning tunneling microscope was…

介观与纳米尺度物理 · 物理学 2019-04-16 Jingcheng Li , Niklas Friedrich , Nestor Merino , Dimas G. de Oteyza , Diego Peña , David Jacob , Jose Ignacio Pascual

We propose a two-terminal spin-orbit interferometer with a hot molecule inserted in one of its arms to generate pure spin currents. Local heating is achieved by coupling the vibrational modes of the molecule to a third (phononic) reservoir.…

介观与纳米尺度物理 · 物理学 2013-10-22 Sun-Yong Hwang , Jong Soo Lim , Rosa Lopez , Minchul Lee , David Sanchez

Although the creation of spin polarization in various non-magnetic media via electrical spin injection from a ferromagnetic tunnel contact has been demonstrated, much of the basic behavior is heavily debated. It is reported here for…

介观与纳米尺度物理 · 物理学 2015-03-17 S. P. Dash , S. Sharma , J. C. Le Breton , H. Jaffrès , J. Peiro , J. -M. George , A. Lemaître , R. Jansen

Benefiting from both molecular tunability and versatile methods for deployment, optically interfaced molecular spins are a promising platform for quantum technologies such as sensing and imaging. Room-temperature optically detected coherent…

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