{"id":47664,"date":"2026-03-26T09:47:51","date_gmt":"2026-03-26T09:47:51","guid":{"rendered":"https:\/\/krea.edu.in\/sias\/?p=47664"},"modified":"2026-03-26T10:00:55","modified_gmt":"2026-03-26T10:00:55","slug":"research-article-by-dr-tanmoy-chakrabarty-published-in-physical-review-b","status":"publish","type":"post","link":"https:\/\/krea.edu.in\/sias\/2026\/03\/26\/research-article-by-dr-tanmoy-chakrabarty-published-in-physical-review-b\/","title":{"rendered":"Research article by Dr Tanmoy Chakrabarty published in Physical Review B"},"content":{"rendered":"\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-9d6595d7 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:66.66%\">\n<p>A research article by Dr Tanmoy Chakrabarty, Assistant Professor, Physics, SIAS titled\u00a0<em>CaFe2O(PO4)2: A compound with S=5\/2 corner sharing triangular\u00a0saw-tooth chains has been published in Physical Review B. <\/em>In this publication, Dr Chakrabarty is one of the two corresponding authors.<\/p>\n\n\n\n<p> Geometric frustration and one-dimensional magnetism boost quantum fluctuations and leads to unusual states of quantum matter. To explore these effects, we used solid state nuclear magnetic resonance (SSNMR), which is a strong local probe to extract the true spin susceptibility and the spin network of a magnetic system.<\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\" style=\"flex-basis:33.33%\">\n<figure class=\"wp-block-image size-full\"><img fetchpriority=\"high\" decoding=\"async\" width=\"500\" height=\"500\" src=\"https:\/\/www-cdn.krea.edu.in\/sias\/2023\/04\/Tanmoy-Chakrabarty.jpg\" alt=\"\" class=\"wp-image-28440\" srcset=\"https:\/\/www-cdn.krea.edu.in\/sias\/2023\/04\/Tanmoy-Chakrabarty.jpg 500w, https:\/\/www-cdn.krea.edu.in\/sias\/2023\/04\/Tanmoy-Chakrabarty-300x300.jpg 300w, https:\/\/www-cdn.krea.edu.in\/sias\/2023\/04\/Tanmoy-Chakrabarty-150x150.jpg 150w\" sizes=\"(max-width: 500px) 100vw, 500px\" \/><\/figure>\n<\/div>\n<\/div>\n\n\n\n<p>Here we studied the magnetic behaviour of a well-separated S = 5\/2 saw-tooth spin chain compound CaFe<sub>2<\/sub>O(PO<sub>4<\/sub>)<sub>2<\/sub>, which has two different <sup>31<\/sup>P sites in the unit cell. Magnetic susceptibility, heat capacity, and <sup>31<\/sup>P NMR measurements show evidence of strong magnetic frustration (with a frustration parameter \u2248 |\u03b8<sub>CW<\/sub>|\/T<sub>N<\/sub>) about 70) in CFPO. The major finding of our work came from the NMR measurements which show a broad maximum near 70 K , reflecting the low-dimensional nature and presence of short-range correlations. It is important to note that such a broad maximum feature is not seen in the bulk \u03c7(T) or in heat capacity. Further investigating this broad maximum feature, we conclude that CFPO represents an interesting realization of a frustrated S = 5\/2 sawtooth spin-chain.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"1024\" height=\"411\" src=\"https:\/\/www-cdn.krea.edu.in\/sias\/2026\/03\/dia-icon.png\" alt=\"\" class=\"wp-image-47665\" srcset=\"https:\/\/www-cdn.krea.edu.in\/sias\/2026\/03\/dia-icon.png 1024w, https:\/\/www-cdn.krea.edu.in\/sias\/2026\/03\/dia-icon-300x120.png 300w, https:\/\/www-cdn.krea.edu.in\/sias\/2026\/03\/dia-icon-768x308.png 768w, https:\/\/www-cdn.krea.edu.in\/sias\/2026\/03\/dia-icon-1536x616.png 1536w, https:\/\/www-cdn.krea.edu.in\/sias\/2026\/03\/dia-icon-1568x629.png 1568w, https:\/\/www-cdn.krea.edu.in\/sias\/2026\/03\/dia-icon.png 1646w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<p><br>(a) local environment of P<sub>1<\/sub> and P<sub>2<\/sub> in CFPO.&nbsp; (b) (T) vs. T at various magnetic fields. (c) Plot of T-dependence of the normalized <sup>31<\/sup>P NMR spectra measured as a function of frequency<\/p>\n\n\n\n<p><strong><a href=\"https:\/\/doi.org\/10.1103\/1gmv-zkvj\" target=\"_blank\" rel=\"noreferrer noopener\">Read more<\/a><\/strong><\/p>\n","protected":false},"excerpt":{"rendered":"<p>A research article by Dr Tanmoy Chakrabarty, Assistant Professor, Physics, SIAS titled\u00a0CaFe2O(PO4)2: A compound with S=5\/2 corner sharing triangular\u00a0saw-tooth chains has been published in Physical Review B. In this publication, Dr Chakrabarty is one of the two corresponding authors. Geometric frustration and one-dimensional magnetism boost quantum fluctuations and leads to unusual states of quantum matter. &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/krea.edu.in\/sias\/2026\/03\/26\/research-article-by-dr-tanmoy-chakrabarty-published-in-physical-review-b\/\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;Research article by Dr Tanmoy Chakrabarty published in Physical Review B&#8221;<\/span><\/a><\/p>\n","protected":false},"author":10,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_links_to":"","_links_to_target":""},"categories":[189],"tags":[],"class_list":["post-47664","post","type-post","status-publish","format-standard","hentry","category-research-spotlight","entry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.3 (Yoast SEO v27.3) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Research article by Dr Tanmoy Chakrabarty published in Physical Review B | Krea University - Top university for liberal education<\/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:\/\/krea.edu.in\/sias\/2026\/03\/26\/research-article-by-dr-tanmoy-chakrabarty-published-in-physical-review-b\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Research article by Dr Tanmoy Chakrabarty published in Physical Review B\" \/>\n<meta property=\"og:description\" content=\"A research article by Dr Tanmoy Chakrabarty, Assistant Professor, Physics, SIAS titled\u00a0CaFe2O(PO4)2: A compound with S=5\/2 corner sharing triangular\u00a0saw-tooth chains has been published in Physical Review B. In this publication, Dr Chakrabarty is one of the two corresponding authors. Geometric frustration and one-dimensional magnetism boost quantum fluctuations and leads to unusual states of quantum matter. &hellip; Continue reading &quot;Research article by Dr Tanmoy Chakrabarty published in Physical Review B&quot;\" \/>\n<meta property=\"og:url\" content=\"https:\/\/krea.edu.in\/sias\/2026\/03\/26\/research-article-by-dr-tanmoy-chakrabarty-published-in-physical-review-b\/\" \/>\n<meta property=\"og:site_name\" content=\"Krea University - Top university for liberal education\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/KreaUniversity\/\" \/>\n<meta property=\"article:published_time\" content=\"2026-03-26T09:47:51+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-26T10:00:55+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www-cdn.krea.edu.in\/sias\/2023\/04\/Tanmoy-Chakrabarty.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"500\" \/>\n\t<meta property=\"og:image:height\" content=\"500\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"Ram Kumar\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@kreauniversity\" \/>\n<meta name=\"twitter:site\" content=\"@kreauniversity\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Ram Kumar\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/krea.edu.in\\\/sias\\\/2026\\\/03\\\/26\\\/research-article-by-dr-tanmoy-chakrabarty-published-in-physical-review-b\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/krea.edu.in\\\/sias\\\/2026\\\/03\\\/26\\\/research-article-by-dr-tanmoy-chakrabarty-published-in-physical-review-b\\\/\"},\"author\":{\"name\":\"Ram Kumar\",\"@id\":\"https:\\\/\\\/krea.edu.in\\\/sias\\\/#\\\/schema\\\/person\\\/7ce1efda1d737e598a23d776a26a7fd5\"},\"headline\":\"Research article by Dr Tanmoy Chakrabarty published in Physical Review B\",\"datePublished\":\"2026-03-26T09:47:51+00:00\",\"dateModified\":\"2026-03-26T10:00:55+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/krea.edu.in\\\/sias\\\/2026\\\/03\\\/26\\\/research-article-by-dr-tanmoy-chakrabarty-published-in-physical-review-b\\\/\"},\"wordCount\":257,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\\\/\\\/krea.edu.in\\\/sias\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/krea.edu.in\\\/sias\\\/2026\\\/03\\\/26\\\/research-article-by-dr-tanmoy-chakrabarty-published-in-physical-review-b\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www-cdn.krea.edu.in\\\/sias\\\/2023\\\/04\\\/Tanmoy-Chakrabarty.jpg\",\"articleSection\":[\"Research Spotlight\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\\\/\\\/krea.edu.in\\\/sias\\\/2026\\\/03\\\/26\\\/research-article-by-dr-tanmoy-chakrabarty-published-in-physical-review-b\\\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/krea.edu.in\\\/sias\\\/2026\\\/03\\\/26\\\/research-article-by-dr-tanmoy-chakrabarty-published-in-physical-review-b\\\/\",\"url\":\"https:\\\/\\\/krea.edu.in\\\/sias\\\/2026\\\/03\\\/26\\\/research-article-by-dr-tanmoy-chakrabarty-published-in-physical-review-b\\\/\",\"name\":\"Research article by Dr Tanmoy Chakrabarty published in Physical Review B | Krea University - 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