{"id":1734,"date":"2022-01-26T19:30:41","date_gmt":"2022-01-26T19:30:41","guid":{"rendered":"https:\/\/cqe.mit.edu\/quarc2022\/?page_id=1734"},"modified":"2022-01-30T16:54:01","modified_gmt":"2022-01-30T16:54:01","slug":"thanh-nguyen","status":"publish","type":"page","link":"https:\/\/cqe.mit.edu\/quarc2022\/thanh-nguyen\/","title":{"rendered":"Thanh Nguyen"},"content":{"rendered":"

[et_pb_section fb_built=”1″ custom_padding_last_edited=”on|tablet” admin_label=”Header” _builder_version=”4.12.1″ background_image=”https:\/\/cqe.mit.edu\/quarc2022\/wp-content\/uploads\/sites\/3\/2022\/01\/t1.jpg” parallax=”on” custom_margin=”|||” custom_margin_tablet=”|||0%” custom_margin_last_edited=”off|desktop” custom_padding=”0|0px|0px|0%|false|false” custom_padding_tablet=”|||0%” custom_padding_phone=”” global_colors_info=”{}”][et_pb_row column_structure=”2_5,3_5″ _builder_version=”4.12.1″ _module_preset=”default” background_color=”#FFFFFF” width=”100%” max_width=”75%” module_alignment=”center” custom_padding=”|5%||5%|false|false” saved_tabs=”all” global_colors_info=”{}”][et_pb_column type=”2_5″ _builder_version=”4.12.1″ _module_preset=”default” global_colors_info=”{}”][et_pb_image src=”https:\/\/cqe.mit.edu\/quarc2022\/wp-content\/uploads\/sites\/3\/2021\/11\/quarc2022_logo1.png” title_text=”quarc2022_logo(1)” _builder_version=”4.12.1″ _module_preset=”default” module_alignment=”center” custom_css_main_element=”max-width:75%;||width:auto;” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][et_pb_column type=”3_5″ _builder_version=”4.12.1″ _module_preset=”default” global_colors_info=”{}”][et_pb_menu menu_id=”9″ _builder_version=”4.12.1″ _module_preset=”default” menu_font=”|700|||||||” menu_font_size=”13px” custom_margin=”||||false|false” custom_padding=”3%||||false|false” custom_css_main_element=”display:flex;” global_colors_info=”{}”][\/et_pb_menu][\/et_pb_column][\/et_pb_row][et_pb_row use_custom_gutter=”on” gutter_width=”1″ _builder_version=”4.12.1″ background_color=”#FFFFFF” width=”100%” max_width=”75%” module_alignment=”center” custom_padding=”|10%||10%|true|false” hover_enabled=”0″ use_custom_width=”on” width_unit=”off” custom_width_percent=”100%” global_colors_info=”{}” sticky_enabled=”0″][et_pb_column type=”4_4″ _builder_version=”3.25″ custom_padding=”15%|||” custom_padding_tablet=”0px|||” custom_padding_phone=”0px|||” custom_padding_last_edited=”on|tablet” global_colors_info=”{}” padding_tablet=”0px|||” padding_last_edited=”on|tablet” custom_padding__hover=”|||” padding_phone=”0px|||”][et_pb_text _builder_version=”4.12.1″ text_font=”||||||||” text_font_size=”16px” text_line_height=”2em” header_font=”Ubuntu|700|||||||” header_font_size=”60px” header_line_height=”1.4em” header_3_font=”Ubuntu||||||||” header_3_line_height=”1.8em” header_6_font=”Lato|700|||||||” header_6_font_size=”18px” header_6_line_height=”1.8em” background_color=”#6e8cc9″ background_layout=”dark” custom_padding=”10%|10%|10%|10%|true|true” custom_padding_phone=”80px|2vw||2vw||true” custom_padding_last_edited=”off|desktop” animation_style=”slide” animation_direction=”top” animation_intensity_slide=”2%” hover_enabled=”0″ text_font_size_tablet=”” text_font_size_phone=”14px” text_font_size_last_edited=”on|desktop” header_font_size_tablet=”” header_font_size_phone=”32px” header_font_size_last_edited=”on|desktop” global_colors_info=”{}” custom_margin=”||5%||false|false” sticky_enabled=”0″]<\/p>\n

Signature of Many-Body Localization of Phonons in Strongly Disordered Superlattices<\/strong><\/h3>\n

<\/strong><\/p>\n

<\/strong><\/h4>\n

<\/strong><\/h4>\n
Thanh Nguyen | Nina Andrejevic | Hoi Chun Po | Qichen Song | Yoichiro Tsurimaki | Nathan C. Drucker | Ahmet Alatas | Esen E. Alp | Bogdan M. Leu | Alessandro Cunsolo\u00a0 |Yong Q. Cai | Lijun Wu | Joseph A. Garlow | Yimei Zhu\u00a0 |Hong Lu | Arthur C. Gossard | Alexander A. Puretzky\u00a0 |David B. Geohegan | Shengxi Huang | Mingda Li<\/strong>
<\/strong><\/strong><\/h5>\n

<\/h4>\n

Many-body localization (MBL) has attracted significant attention because of its immunity to thermalization, role in logarithmic entanglement entropy growth, and opportunities to reach exotic quantum orders. However, experimental realization of MBL in solid-state systems has remained challenging. Here, we report evidence of a possible phonon MBL phase in disordered GaAs\/AlAs superlattices. Through grazing-incidence inelastic X-ray scattering, we observe a strong deviation of the phonon population from equilibrium in samples doped with ErAs nanodots at low temperature, signaling a departure from thermalization. This behavior occurs within finite phonon energy and wavevector windows, suggesting a localization-thermalization crossover. We support our observation by proposing a theoretical model for the effective phonon Hamiltonian in disordered superlattices, and showing that it can be mapped exactly to a disordered 1D Bose\u2013Hubbard model with a known MBL phase. Our work provides momentum-resolved experimental evidence of phonon localization, extending the scope of MBL to disordered solid-state systems.<\/p>\n

 <\/p>\n

Funding Sources: U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences (BES), award No. DE-SC0020148<\/p>\n

[\/et_pb_text][et_pb_image src=”https:\/\/cqe.mit.edu\/quarc2022\/wp-content\/uploads\/sites\/3\/2021\/12\/fig1_original_reduced.png” title_text=”fig1_original_reduced” align=”center” align_tablet=”center” align_phone=”center” align_last_edited=”on|desktop” _builder_version=”4.12.1″ max_width=”100%” module_alignment=”center” custom_margin=”||||false|false” custom_padding=”||||false|false” animation_style=”slide” hover_enabled=”0″ border_width_all=”2px” global_colors_info=”{}” sticky_enabled=”0″][\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row column_structure=”1_2,1_2″ use_custom_gutter=”on” gutter_width=”1″ _builder_version=”4.12.1″ background_color=”#FFFFFF” width=”100%” max_width=”75%” module_alignment=”center” custom_padding=”5%|5%|5%|5%|true|false” use_custom_width=”on” width_unit=”off” custom_width_percent=”100%” global_colors_info=”{}”][et_pb_column type=”1_2″ _builder_version=”3.25″ custom_padding=”15%|||” custom_padding_tablet=”0px|||” custom_padding_phone=”0px|||” custom_padding_last_edited=”on|tablet” global_colors_info=”{}” padding_tablet=”0px|||” padding_last_edited=”on|tablet” custom_padding__hover=”|||” padding_phone=”0px|||”][et_pb_text _builder_version=”4.12.1″ text_font=”||||||||” text_font_size=”16px” text_line_height=”2em” header_font=”Ubuntu|700|||||||” header_font_size=”60px” header_line_height=”1.4em” header_3_font=”Ubuntu||||||||” header_3_line_height=”1.8em” header_6_font=”Lato|700|||||||” header_6_font_size=”18px” header_6_line_height=”1.8em” background_color=”#96a6bd” background_layout=”dark” custom_padding=”10%|10%|10%|10%|true|true” custom_padding_phone=”80px|2vw||2vw||true” custom_padding_last_edited=”off|desktop” animation_style=”slide” animation_direction=”top” animation_intensity_slide=”2%” hover_enabled=”0″ text_font_size_tablet=”” text_font_size_phone=”14px” text_font_size_last_edited=”on|desktop” header_font_size_tablet=”” header_font_size_phone=”32px” header_font_size_last_edited=”on|desktop” global_colors_info=”{}” custom_css_main_element=”display:flex;” sticky_enabled=”0″]<\/p>\n

Thanh Nguyen<\/strong><\/h1>\n

 <\/p>\n

Affiliation: MIT, Graduate Student<\/strong><\/strong><\/h2>\n

 <\/p>\n

Areas of Research<\/strong><\/h2>\n
    \n
  • \n
      \n
    • Solid-State Defect Engineering<\/li>\n
    • Low-Dimensional Materials & Devices<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

      Open to<\/strong><\/h2>\n
        \n
      • \n
          \n
        • Internships<\/li>\n
        • Full-time positions<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n

          [\/et_pb_text][\/et_pb_column][et_pb_column type=”1_2″ _builder_version=”3.25″ custom_padding=”|||” global_colors_info=”{}” custom_padding__hover=”|||”][et_pb_image src=”https:\/\/cqe.mit.edu\/quarc2022\/wp-content\/uploads\/sites\/3\/2021\/12\/picture.png” title_text=”picture” align=”center” align_tablet=”center” align_phone=”center” align_last_edited=”on|desktop” _builder_version=”4.12.1″ max_width=”85%” module_alignment=”center” custom_padding=”|||5%|false|false” animation_style=”slide” global_colors_info=”{}”][\/et_pb_image][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"

          Signature of Many-Body Localization of Phonons in Strongly Disordered Superlattices Thanh Nguyen | Nina Andrejevic | Hoi Chun Po | Qichen Song | Yoichiro Tsurimaki | Nathan C. Drucker | Ahmet Alatas | Esen E. Alp | Bogdan M. Leu | Alessandro Cunsolo\u00a0 |Yong Q. Cai | Lijun Wu | Joseph A. Garlow | Yimei […]<\/p>\n","protected":false},"author":6,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","footnotes":""},"class_list":["post-1734","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/cqe.mit.edu\/quarc2022\/wp-json\/wp\/v2\/pages\/1734","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/cqe.mit.edu\/quarc2022\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/cqe.mit.edu\/quarc2022\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/cqe.mit.edu\/quarc2022\/wp-json\/wp\/v2\/users\/6"}],"replies":[{"embeddable":true,"href":"https:\/\/cqe.mit.edu\/quarc2022\/wp-json\/wp\/v2\/comments?post=1734"}],"version-history":[{"count":5,"href":"https:\/\/cqe.mit.edu\/quarc2022\/wp-json\/wp\/v2\/pages\/1734\/revisions"}],"predecessor-version":[{"id":1929,"href":"https:\/\/cqe.mit.edu\/quarc2022\/wp-json\/wp\/v2\/pages\/1734\/revisions\/1929"}],"wp:attachment":[{"href":"https:\/\/cqe.mit.edu\/quarc2022\/wp-json\/wp\/v2\/media?parent=1734"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}