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Physics

Deforestation in Brazil’s Amazon up by more than double: data

Deforestation in Brazil’s Amazon, shown in this photo taken in Para state in August 2019, has risen sharply this year Deforestation in Brazil’s Amazon in November surged by 104 percent compared to the same month in 2018, according to official data released Saturday.   The 563 square kilometers (217 square …

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Greenland ice losses rising faster than expected

The midnight sun casts a golden glow on an iceberg and its reflection in Disko Bay, Greenland. Much of Greenland’s annual mass loss occurs through calving of icebergs such as this. Credit: Ian Joughin, University of Washington Greenland is losing ice seven times faster than in the 1990s and is …

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Scientists Discover New Electronic State of Matter

A team of U.S. physicists and materials scientists has observed a new state of matter at the interface between two oxide materials: lanthanum aluminate (LaAlO3) and strontium titanate (SrTiO3). The discovery shows electrons can bind together in ways similar to how quarks combine to form neutrons and protons. Electrons travel …

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Physicists Pioneer New Way to Turn Metal into Insulator

A team of physicists led by the University of British Columbia has demonstrated a novel way to precisely control electrical currents by leveraging the interaction between an electron’s spin and its orbital rotation around the nucleus. An artist’s impression of the dissolving of the electronic ‘traffic jam:’ the red atoms …

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Physicists Discover New Quasiparticle

Named π-ton (pi-ton), the newly-discovered quasiparticle consists of two electrons and two holes. Two electrons and two holes, created by light quanta, held together by a chessboard-like background. Image credit: TU Wien Quasiparticle is a disturbance in a medium that behaves as a particle and that may conveniently be regarded …

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Researchers Coax Levitating Glass Bead Into the Quantum World

  Studying the quantum state of the universe is a challenging endeavor in part because objects only have detectable quantum properties on the smallest of scales. The larger something is, the harder it is to get it into a well-defined quantum state unobscured by environmental effects. A team of US-Austrian …

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Exotic Binary System Confirms Relativistic Frame-Dragging

An international team of astronomers has found exciting new evidence for Lense-Thirring precession — an effect of relativistic frame-dragging — after tracking the pulsar-white dwarf binary system PSR J1141-6545 for almost two decades. An artist’s depiction of a rapidly spinning neutron star and a white dwarf dragging the fabric of …

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Scientists Use Light to Transport Electrons at Ultrafast Speeds

A research team led by University of Konstanz scientists has demonstrated that light waves can be used to transport electrons at sub-femtosecond speeds (i.e. faster than 10-15 seconds). Electrons move between two arms of a metallic nanoantenna driven by a single-cycle light wave. Image credit: University of Konstanz. “This may …

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Researchers Demonstrate Chip-to-Chip Quantum Teleportation

A research team led by University of Bristol scientists has successfully demonstrated quantum teleportation of information between two programmable micrometer-scale silicon chips. The team’s work, published in the journal Nature Physics, lays the groundwork for large-scale integrated photonic quantum technologies for communications and computations. Llewellyn et al realize an array …

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