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uni-frankfurtdevalentiTALKS · Content Mean field theory of the Heisenberg model MFT: ferromagnetism MFT: antiferromagnetism Disadvantages Spin wave theory Summary loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer20220708135f0d11ac7e708231d4388664html5thumbnails3jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=4Page 4button div class=ts-imageimg data-url=folie-1-uni-valentitalks-content-mean-field-theory-of-the-heisenberg-modelhtmlpage=4 data-page=4 class=ts-thumb lazyload alt=Page 4: Folie 1 - uni-frankfurtdevalentiTALKS · Content Mean field theory of the Heisenberg model MFT: ferromagnetism MFT: antiferromagnetism Disadvantages Spin wave theory Summary loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer20220708135f0d11ac7e708231d4388664html5thumbnails4jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=5Page 5button div class=ts-imageimg data-url=folie-1-uni-valentitalks-content-mean-field-theory-of-the-heisenberg-modelhtmlpage=5 data-page=5 class=ts-thumb lazyload alt=Page 5: Folie 1 - uni-frankfurtdevalentiTALKS · Content Mean field theory of the Heisenberg model MFT: ferromagnetism MFT: antiferromagnetism Disadvantages Spin wave theory Summary loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer20220708135f0d11ac7e708231d4388664html5thumbnails5jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=6Page 6button div class=ts-imageimg data-url=folie-1-uni-valentitalks-content-mean-field-theory-of-the-heisenberg-modelhtmlpage=6 data-page=6 class=ts-thumb lazyload alt=Page 6: Folie 1 - uni-frankfurtdevalentiTALKS · Content Mean field theory of the Heisenberg model MFT: ferromagnetism MFT: antiferromagnetism Disadvantages Spin wave theory Summary loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer20220708135f0d11ac7e708231d4388664html5thumbnails6jpg width=140 height=200 divpMFTpdivdiv class=ts-pagebutton class=gotoPage data-page=7Page 7button div class=ts-imageimg data-url=folie-1-uni-valentitalks-content-mean-field-theory-of-the-heisenberg-modelhtmlpage=7 data-page=7 class=ts-thumb lazyload alt=Page 7: Folie 1 - uni-frankfurtdevalentiTALKS · Content Mean field theory of the Heisenberg model MFT: ferromagnetism MFT: antiferromagnetism Disadvantages Spin wave theory Summary loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer20220708135f0d11ac7e708231d4388664html5thumbnails7jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=8Page 8button div class=ts-imageimg data-url=folie-1-uni-valentitalks-content-mean-field-theory-of-the-heisenberg-modelhtmlpage=8 data-page=8 class=ts-thumb lazyload alt=Page 8: Folie 1 - uni-frankfurtdevalentiTALKS · Content Mean field theory of the Heisenberg model MFT: ferromagnetism MFT: antiferromagnetism Disadvantages Spin wave theory Summary loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer20220708135f0d11ac7e708231d4388664html5thumbnails8jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=9Page 9button div class=ts-imageimg data-url=folie-1-uni-valentitalks-content-mean-field-theory-of-the-heisenberg-modelhtmlpage=9 data-page=9 class=ts-thumb lazyload alt=Page 9: Folie 1 - uni-frankfurtdevalentiTALKS · Content Mean field theory of the Heisenberg model MFT: ferromagnetism MFT: antiferromagnetism Disadvantages Spin wave theory Summary loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer20220708135f0d11ac7e708231d4388664html5thumbnails9jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=10Page 10button div class=ts-imageimg data-url=folie-1-uni-valentitalks-content-mean-field-theory-of-the-heisenberg-modelhtmlpage=10 data-page=10 class=ts-thumb lazyload alt=Page 10: Folie 1 - uni-frankfurtdevalentiTALKS · Content Mean field theory of the Heisenberg model MFT: ferromagnetism MFT: antiferromagnetism Disadvantages Spin wave theory Summary loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer20220708135f0d11ac7e708231d4388664html5thumbnails10jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=11Page 11button div class=ts-imageimg data-url=folie-1-uni-valentitalks-content-mean-field-theory-of-the-heisenberg-modelhtmlpage=11 data-page=11 class=ts-thumb lazyload alt=Page 11: Folie 1 - uni-frankfurtdevalentiTALKS · Content Mean field theory of the Heisenberg model MFT: ferromagnetism MFT: antiferromagnetism Disadvantages Spin wave theory Summary loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer20220708135f0d11ac7e708231d4388664html5thumbnails11jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=12Page 12button div class=ts-imageimg data-url=folie-1-uni-valentitalks-content-mean-field-theory-of-the-heisenberg-modelhtmlpage=12 data-page=12 class=ts-thumb lazyload alt=Page 12: Folie 1 - uni-frankfurtdevalentiTALKS · Content Mean field theory of the Heisenberg model MFT: ferromagnetism MFT: antiferromagnetism Disadvantages Spin wave theory Summary loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer20220708135f0d11ac7e708231d4388664html5thumbnails12jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=13Page 13button div class=ts-imageimg data-url=folie-1-uni-valentitalks-content-mean-field-theory-of-the-heisenberg-modelhtmlpage=13 data-page=13 class=ts-thumb lazyload alt=Page 13: Folie 1 - uni-frankfurtdevalentiTALKS · Content Mean field theory of the Heisenberg model MFT: ferromagnetism MFT: antiferromagnetism Disadvantages Spin wave theory Summary loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer20220708135f0d11ac7e708231d4388664html5thumbnails13jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=14Page 14button div class=ts-imageimg data-url=folie-1-uni-valentitalks-content-mean-field-theory-of-the-heisenberg-modelhtmlpage=14 data-page=14 class=ts-thumb lazyload alt=Page 14: Folie 1 - uni-frankfurtdevalentiTALKS · Content Mean field theory of the Heisenberg model MFT: ferromagnetism MFT: antiferromagnetism Disadvantages Spin wave theory Summary loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer20220708135f0d11ac7e708231d4388664html5thumbnails14jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=15Page 15button div class=ts-imageimg data-url=folie-1-uni-valentitalks-content-mean-field-theory-of-the-heisenberg-modelhtmlpage=15 data-page=15 class=ts-thumb lazyload alt=Page 15: Folie 1 - uni-frankfurtdevalentiTALKS · Content Mean field theory of the Heisenberg model MFT: ferromagnetism MFT: antiferromagnetism Disadvantages Spin wave theory Summary loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer20220708135f0d11ac7e708231d4388664html5thumbnails15jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=16Page 16button div class=ts-imageimg data-url=folie-1-uni-valentitalks-content-mean-field-theory-of-the-heisenberg-modelhtmlpage=16 data-page=16 class=ts-thumb lazyload alt=Page 16: Folie 1 - uni-frankfurtdevalentiTALKS · Content Mean field theory of the Heisenberg model MFT: ferromagnetism MFT: antiferromagnetism Disadvantages Spin wave theory Summary loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer20220708135f0d11ac7e708231d4388664html5thumbnails16jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=17Page 17button div class=ts-imageimg data-url=folie-1-uni-valentitalks-content-mean-field-theory-of-the-heisenberg-modelhtmlpage=17 data-page=17 class=ts-thumb lazyload alt=Page 17: Folie 1 - 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uni-frankfurtdevalentiTALKS · Content Mean field theory of the Heisenberg model MFT: ferromagnetism MFT: antiferromagnetism Disadvantages Spin wave theory Summary loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer20220708135f0d11ac7e708231d4388664html5thumbnails19jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=20Page 20button div class=ts-imageimg data-url=folie-1-uni-valentitalks-content-mean-field-theory-of-the-heisenberg-modelhtmlpage=20 data-page=20 class=ts-thumb lazyload alt=Page 20: Folie 1 - uni-frankfurtdevalentiTALKS · Content Mean field theory of the Heisenberg model MFT: ferromagnetism MFT: antiferromagnetism Disadvantages Spin wave theory Summary loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAIAAAACCAQAAADYv8WvAAAAD0lEQVR42mP8X8AwAgiABKBAv+vAXklAAAAAElFTkSuQmCC data-src=https:reader035vdocumentssitereader035viewer20220708135f0d11ac7e708231d4388664html5thumbnails20jpg width=140 height=200 divdivdiv class=ts-pagebutton class=gotoPage data-page=21Page 21button div class=ts-imageimg data-url=folie-1-uni-valentitalks-content-mean-field-theory-of-the-heisenberg-modelhtmlpage=21 data-page=21 class=ts-thumb lazyload alt=Page 21: Folie 1 - 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