{"id":35094,"date":"2025-03-27T16:40:00","date_gmt":"2025-03-27T16:40:00","guid":{"rendered":"https:\/\/www.prnasia.com\/story\/archive\/4651380_CN51380_0"},"modified":"2025-03-27T16:40:00","modified_gmt":"2025-03-27T16:40:00","slug":"nus-physicists-discover-a-copper-free-high-temperature-superconducting-oxide","status":"publish","type":"post","link":"https:\/\/transmediavictoria.net.au\/?p=35094","title":{"rendered":"NUS physicists discover a copper-free high-temperature superconducting oxide"},"content":{"rendered":"<p><span class=\"legendSpanClass\"><span class=\"xn-location\">SINGAPORE<\/span>, March 28, 2025 \/PRNewswire\/ &#8212;&nbsp;Professor Ariando and Dr Stephen Lin Er Chow from the <span class=\"xn-org\">National University of Singapore<\/span> (NUS) Department of Physics have designed and synthesised a groundbreaking new material\u2014a copper-free superconducting oxide\u2014capable of superconducting at approximately 40 Kelvin (K), or about minus 233 degrees Celsius (deg C), under ambient pressure. This discovery further advances NUS&#8217; and <span class=\"xn-location\">Singapore&#8217;s<\/span> leadership at the forefront of high-temperature superconductivity research.<\/span><\/p>\n<p>Nearly four decades after the discovery of copper oxide superconductivity, which earned the 1987 Nobel Prize in Physics, the NUS researchers have now identified another high-temperature superconducting oxide that expands the understanding of unconventional superconductivity beyond copper oxides.<\/p>\n<p><b><u>The promise of superconductors<\/u><\/b><\/p>\n<p>Modern electronics generate heat and consume energy during operation. Superconductors, however, possess a unique property known as the zero-resistance state, which eliminates energy loss due to electrical resistance. In theory, this makes them ideal for modern electronic applications, addressing the world&#8217;s growing energy demands.<\/p>\n<p>Despite the discovery of thousands of superconducting materials, the vast majority function only at extremely low temperatures near absolute zero (<span class=\"xn-money\">0 K<\/span>), or about minus 273 deg C, making them impractical for widespread use.&nbsp;<\/p>\n<p><b><u>The 1987 Nobel Prize Breakthrough<\/u><\/b><\/p>\n<p>Nearly 40 years ago, physicists <span class=\"xn-person\">Johannes Bednorz<\/span> and Karl M\u00fcller discovered a new class of superconductors\u2014copper oxides\u2014which exhibit superconductivity at temperatures above <span class=\"xn-money\">30 K<\/span>, significantly higher than any previously known superconductors.<\/p>\n<p>This breakthrough, which earned them the Nobel Prize in Physics, laid the foundation for high-temperature superconductivity research. To this day, copper oxides remain the only superconducting oxides that function at temperatures above <span class=\"xn-money\">30 K<\/span>, or about minus 243 dec C, under ambient pressure, without requiring lattice compression.<\/p>\n<p><b><u>A breakthrough beyond copper<\/u><\/b><\/p>\n<p>In a series of studies, Prof Ariando and Dr Chow identified a direct correlation between interlayer interactions in layered systems and superconducting temperatures.<\/p>\n<p>Building on this insight, the researchers developed a phenomenological model that predicted several compounds capable of high-temperature superconductivity, similar to copper oxides, but without copper.<\/p>\n<p>The team successfully synthesised (Sm-Eu-Ca)NiO\u2082 nickel oxide, one of the predicted materials, and confirmed zero electrical resistance (superconductivity) well above <span class=\"xn-money\">30 K<\/span> in this compound.<\/p>\n<p>Dr Chow stated, &#8220;As we predicted and designed, this non-copper-based superconducting oxide demonstrates high-temperature superconductivity under atmospheric pressure at sea level, without the need for additional compression\u2014just like copper oxides. This finding suggests that unconventional high-temperature superconductivity is not exclusive to copper but could be a more widespread property among elements in the periodic table.&#8221;<\/p>\n<p>&#8220;This observation has profound implications for both theoretical understanding and experimental realisation of a broader scope of superconducting materials with practical applications in modern electronics,&#8221; added Prof Ariando.<\/p>\n<p>The research breakthrough was published in the scientific journal&nbsp;<i>Nature<\/i> on <span class=\"xn-chron\">20 March 2025<\/span>.<\/p>\n<p><b><u>Expanding the frontier of high-temperature superconductors<\/u><\/b><\/p>\n<p>&#8220;This is the first time since the Nobel-winning discovery that a copper-free high-temperature superconducting oxide has been found to function under ambient pressure,&#8221; emphasised Prof Ariando.<\/p>\n<p>&#8220;Additionally, this new material is highly stable under ambient conditions, significantly improving its accessibility.&#8221;<\/p>\n<p>This discovery has sparked growing interest, not only in the material itself but also in the broader potential for a new class of high-temperature superconductors.<\/p>\n<p><b><u>Further research and future implications<\/u><\/b><\/p>\n<p>The research team continues to investigate the material&#8217;s unique properties, exploring tuning parameters such as electronic occupancy shifting and hydrostatic pressure. These efforts aim to deepen the understanding of high-temperature superconducting mechanisms and pave the way for synthesising a broader family of superconductors with even higher operating temperatures.<\/p>\n<p>Another contributor to this work includes Mr <span class=\"xn-person\">Zhaoyang Luo<\/span>, an NUS PhD student with the research team, who demonstrated the high crystallinity and pure-phase nature of the synthesised material using electron microscopy.<\/p>\n<p>This breakthrough represents a major step toward the development of next-generation superconducting materials, with practical applications in modern electronics and energy-efficient technologies.<\/p>\n<p>Read more at: <a href=\"https:\/\/news.nus.edu.sg\/nus-physicists-copper-free-high-temperature-superconducting-oxide\/\" target=\"_blank\" rel=\"nofollow noopener\">https:\/\/news.nus.edu.sg\/nus-physicists-copper-free-high-temperature-superconducting-oxide\/<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>SINGAPORE, March 28, 2025 \/PRNewswire\/ &#8212;&nbsp;Professor Ariando and Dr Stephen Lin Er Chow from the National University of Singapore (NUS) Department of Physics have designed and synthesised a groundbreaking new material\u2014a copper-free superconducting oxide\u2014capable of superconducting at approximately 40 Kelvin (K), or about minus 233 degrees Celsius (deg C), under ambient pressure. This discovery further [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[20],"tags":[],"class_list":["post-35094","post","type-post","status-publish","format-standard","hentry","category-business-news"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>NUS physicists discover a copper-free high-temperature superconducting oxide - My Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/transmediavictoria.net.au\/?p=35094\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"NUS physicists discover a copper-free high-temperature superconducting oxide - My Blog\" \/>\n<meta property=\"og:description\" content=\"SINGAPORE, March 28, 2025 \/PRNewswire\/ &#8212;&nbsp;Professor Ariando and Dr Stephen Lin Er Chow from the National University of Singapore (NUS) Department of Physics have designed and synthesised a groundbreaking new material\u2014a copper-free superconducting oxide\u2014capable of superconducting at approximately 40 Kelvin (K), or about minus 233 degrees Celsius (deg C), under ambient pressure. 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