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Defining Hund Physics Landscape of Two-Orbital Systems


Korea Advanced Institute of Science and Technology
Researchers identify exotic metals in unexpected quantum systems
Figure: Phase diagram of two-orbital systems. Various metals emerge depending on the values of electron interactions denoted by U (x-axis) and Hund’s coupling J/U (y-axis).
Electrons are ubiquitous among atoms, subatomic tokens of energy that can independently change how a system behaves but they also can change each other. An international research collaboration found that collectively measuring electrons revealed unique and unanticipated findings. The researchers published their results on May 17 in Physical Review Letters.
“It is not feasible to obtain the solution just by tracing the behavior of each individual electron,” said paper author Myung Joon Han, professor of physics at KAIST. “Instead, one should describe or track all the entangled electrons at once. This requires a clever way of treating this entanglement.” ....

United States , South Korea , Myung Joon Han , Sangkook Choi , Siheon Ryee , Us Department Of Energy , Korea National Research Foundation , Energy Sciences , Materials Science Department , Office Of Science , Korea Advanced Institute Of Science , Brookhaven National Laboratory , Korea Advanced Institute , Physical Review , Condensed Matter Physics , National Research Foundation , Basic Energy Sciences , ஒன்றுபட்டது மாநிலங்களில் , தெற்கு கொரியா , எங்களுக்கு துறை ஆஃப் ஆற்றல் , கொரியா தேசிய ஆராய்ச்சி அடித்தளம் , ஆற்றல் அறிவியல் , பொருட்கள் அறிவியல் துறை , அலுவலகம் ஆஃப் அறிவியல் , ப்ரூக்ஹவன் தேசிய ஆய்வகம் , உடல் விமர்சனம் ,

New family of atomic-thin electride materials discovered | EurekAlert! Science News


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IMAGE: Yellow isosurfaces on left panel indicate electrons localized in-between the C3 trimers. Ionized structure on the right has no trapped electrons, and some of the M atoms have been largely.
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Credit: Soungmin Bae and Hannes Raebiger
An exploratory investigation into the behavior of materials with desirable electric properties resulted in the discovery of a structural phase of two-dimensional (2D) materials. The new family of materials are electrides, wherein electrons occupy a space usually reserved for atoms or ions instead of orbiting the nucleus of an atom or ion. The stable, low-energy, tunable materials could have potential applications in nanotechnologies. ....

Minas Gerais , South Korea , Yoon Gu Kang , Kaoru Ohno , Hideo Hosono , Modelamienoty Simulaci , Mohammad Khazaei , Kazuaki Kuwahata , Naturaise Humanas , William Espinosa Garc , Myung Joon Han , Gustavom Dalpian , Soungmin Bae , Juho Lee , Noriyuki Egawa , Hannes Raebiger , Yong Hoon Kim , Department Of Physics At Yokohama National University , Tokyo Institute Of Technology , Department Of Electrical Engineering , Samsung Research Funding Incubation Center , Korea National Research Foundation , Paulo Research Foundation , Iwaki Scholarship Foundation , Samsung Electronics , Materials Research Center ,