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Spin-crossover complexes exhibit two stable configurations with distinct spin states. The investigation of these molecules using low-temperature scanning tunneling microscopy has opened new perspectives for understanding the associated…

介观与纳米尺度物理 · 物理学 2026-01-05 Jonas Fußangel , Björn Sothmann , Sven Johannsen , Sascha Ossinger , Felix Tuczek , Richard Berndt , Jürgen König , Manuel Gruber

We present a fast and efficient tight-binding (TB) method for simulating scanning tunneling microscopy (STM) imaging of adsorbate molecules on ultrathin insulating films. Due to the electronic decoupling of the molecule from the metal…

材料科学 · 物理学 2015-05-13 Antti Korventausta , Sami Paavilainen , Eeva Niemi , Jouko Nieminen

The interaction of polarized light with photonic crystals exhibit unique features due to its sub-wavelength nature on the surface and the periodic variation of refractive index in the depth of the crystals. Here, we present a detailed study…

光学 · 物理学 2017-05-24 Priya , Rajesh V. Nair

We investigate the thermal activated magnetisation reversal in a single ferromagnetic nanoparticle with uniaxial anisotropy using Monte Carlo simulations. The aim of this work is to reproduce the reversal magnetisation by uniform rotation…

材料科学 · 物理学 2009-11-10 Denis Ledue , Pierre-Emmanuel Berche , Renaud Patte

Inelastic electron tunneling in a scanning tunneling microscope (STM) is used to generate excitons in monolayer tungsten disulfide (WS$_2$). Excitonic electroluminescence is measured both at positive and negative sample bias. Using optical…

The angle and temperature dependence of the photon scattering rate for Bose-stimulated atom recoil transitions between occupied states is compared to diffraction and incoherent Rayleigh scattering near the Bose-Einstein transition for an…

量子物理 · 物理学 2009-10-30 H. David Politzer

A simple double-decker molecule with magnetic anisotropy, nickelocene, is attached to the metallic tip of a low-temperature scanning tunneling microscope. In the presence of a Cu(100) surface, the conductance around the Fermi energy is…

强关联电子 · 物理学 2017-05-18 M. Ormaza , P. Abufager , B. Verlhac , N. Bachellier , M. -L. Bocquet , N. Lorente , L. Limot

In this work, a reversible control over the visible luminescence of phosphor ZnO is achieved by the application of a few volts (<5V) to nanostructured ZnO film sandwiched between ITO and LiClO4/PEO solid electrolyte. Since ZnO is a good…

材料科学 · 物理学 2011-05-10 Manoranjan Ghosh , A. K. Raychaudhuri

We implement the theory of resonant scattering in the context of Cosmic Microwave Background (CMB) polarisation anisotropies. We compute the changes in the E-mode polarisation (EE) and Temperature E-mode (TE) CMB power spectra introduced by…

天体物理学 · 物理学 2007-05-23 C. Hernandez-Monteagudo , J. A. Rubino-Martin , R. A. Sunyaev

The transverse Meissner effect (TME) in the highly layered superconductor $Bi_2Sr_2CaCu_2O_{8+y}$ with columnar defects is investigated by transport measurements. We present detailed evidence for the persistence of the Bose glass phase for…

超导电性 · 物理学 2007-05-23 V. Ta Phuoc , E. Olive , R. De Sousa , A. Ruyter , L. Ammor , J. C. Soret

Ferroelectric switching in BiFeO$_3$ multiferroic thin films with intrinsic ``stripe-like'' and ``bubble-like'' polydomain configurations was studied by piezoresponse force microscopy. Using the local electric field applied by a scanning…

材料科学 · 物理学 2009-07-28 H. Béa , M. Bibes , A. Barthélémy , P. Paruch

It is widely known that antiferromagnets (AFMs) display a high frequency response in the terahertz (THz) range, which opens up the possibility for ultrafast control of their magnetization for next generation data storage and processing…

材料科学 · 物理学 2023-04-26 Joel Hirst , Sergiu Ruta , Jerome Jackson , Thomas Ostler

We have studied the influence of the magnetization on the superconducting transition temperature ($T_c$) in bi- and trilayers consisting of the half-metallic ferromagnet La$_{0.67}$Sr$_{0.33}$MnO$_3$ (LSMO) and the high-temperature…

超导电性 · 物理学 2009-04-15 M. van Zalk , M. Veldhorst , A. Brinkman , J. Aarts , H. Hilgenkamp

Understanding the fundamental mechanisms of optoelectronic excitation and relaxation pathways on the single-molecule level has only recently been started by combining scanning tunneling microscopy (STM) and spectroscopy (STS) with…

In this work we fabricate and characterize a functionalized superconducting (SC) Nb tip of a scanning tunnelling microscope (STM). The tip is functionalized with a Tetracyanoquinodimethane molecule (TCNQ) that accepts charge from the tip…

The reconstruction on Ge(001) surface is locally and reversibly changed between c(4x2) and p(2x2) by controlling the bias voltage of a scanning tunneling microscope (STM) at 80K. It is c(4x2) with the sample bias voltage V_b =< -0.7V. This…

材料科学 · 物理学 2009-11-10 Yasumasa Takagi , Yoshihide Yoshimoto , Kan Nakatsuji , Fumio Komori

The formation of hybrid light-molecule states (polaritons) offers a new strategy to manipulate the photochemistry of molecules. To fully exploit its potential, one needs to build a toolbox of polaritonic phenomenologies that supplement…

介观与纳米尺度物理 · 物理学 2018-11-20 Jacopo Fregoni , Giovanni Granucci , Emanuele Coccia , Maurizio Persico , Stefano Corni

We present the full set of power spectra of cosmic microwave background (CMB) temperature and polarization anisotropies due to the coupling between quintessence and pseudoscalar of electromagnetism. This coupling induces the rotation of the…

天体物理学 · 物理学 2009-11-11 Guo-Chin Liu , Seokcheon Lee , Kin-Wang Ng

Using density functional theory, we investigate TM-cyclopentadienyl-benzene sandwich molecular wires (SMWs) which are composites of TM-cyclopentadienyl and TM-benzene wires (TM = transition metal (V, Fe)). All the SMWs are found to be…

介观与纳米尺度物理 · 物理学 2012-10-11 Prakash Parida , Ershaad Ahamed Basheer , Swapan K Pati

Gravitational lensing of the cosmic microwave background (CMB) is expected to be amongst the most powerful cosmological tools for ongoing and upcoming CMB experiments. In this work, we investigate a bias to CMB lensing reconstruction from…

宇宙学与河外天体物理 · 物理学 2018-01-26 Simone Ferraro , J. Colin Hill