T
Tula R. Paudel
Researcher at University of Nebraska–Lincoln
Publications - 97
Citations - 4073
Tula R. Paudel is an academic researcher from University of Nebraska–Lincoln. The author has contributed to research in topics: Ferroelectricity & Ferromagnetism. The author has an hindex of 31, co-authored 88 publications receiving 3178 citations. Previous affiliations of Tula R. Paudel include Case Western Reserve University & National Renewable Energy Laboratory.
Papers
More filters
Journal ArticleDOI
Freestanding crystalline oxide perovskites down to the monolayer limit
Dianxiang Ji,Songhua Cai,Tula R. Paudel,Haoying Sun,Chunchen Zhang,Lu Han,Yifan Wei,Yipeng Zang,Min Gu,Yi Zhang,Wenpei Gao,Huaixun Huyan,Wei Guo,Di Wu,Zheng-Bin Gu,Evgeny Y. Tsymbal,Peng Wang,Yuefeng Nie,Xiaoqing Pan +18 more
TL;DR: It is found that freestanding BiFeO3 films exhibit unexpected and giant tetragonality and polarization when approaching the 2D limit, and the absence of a critical thickness for stabilizing the crystalline order in thefreestanding ultrathin oxide films is demonstrated.
Journal ArticleDOI
Emergence of room-temperature ferroelectricity at reduced dimensions
Daesu Lee,Haidong Lu,Yijia Gu,Si-Young Choi,S.-D. Li,Sangwoo Ryu,Tula R. Paudel,Kyung Song,Evgeny Mikheev,Sanghan Lee,Susanne Stemmer,Dmitri A. Tenne,Sang Ho Oh,Evgeny Y. Tsymbal,Xifan Wu,Long Qing Chen,Alexei Gruverman,Chang-Beom Eom +17 more
TL;DR: It is shown that electrically induced alignment of naturally existing polar nanoregions is responsible for the appearance of a stable net ferroelectric polarization in these films and can be useful for the development of low-dimensional material systems with enhanced functional properties relevant to emerging nanoelectronic devices.
Journal ArticleDOI
Switchable induced polarization in LaAlO3/SrTiO3 heterostructures.
Chung Wung Bark,Pankaj Sharma,Yong Wang,Seung Hyub Baek,Sanghan Lee,Sangwoo Ryu,C H Folkman,Tula R. Paudel,Amit Kumar,Sergei V. Kalinin,Andrei Sokolov,Evgeny Y. Tsymbal,Mark Rzchowski,Alexei Gruverman,Chang-Beom Eom +14 more
TL;DR: Using piezoresponse force microscopy, a switchable electromechanical response of the LAO overlayer is demonstrated, which is attributed to the motion of oxygen vacancies through the LAo layer thickness, a signature of a possible additional mechanism for nanoscale oxide 2DEG control on LAO/STO interfaces.
Journal ArticleDOI
Doping Rules and Doping Prototypes in A2BO4 Spinel Oxides
TL;DR: In this paper, the anti-site defects are the main source of electrical conductivity in spinel oxides and the trends in anti-sites transition levels are systemized, revealing fundamental "doping rules" so as to guide practical doping of these oxides.
Journal ArticleDOI
Isostructural metal-insulator transition in VO2
Daesu Lee,Bongwook Chung,Yin Shi,Gi-Yeop Kim,Neil Campbell,Fei Xue,Kyung Song,Si-Young Choi,J. P. Podkaminer,Tae Heon Kim,Philip Ryan,Philip Ryan,Jong-Woo Kim,Tula R. Paudel,Jong-Hoon Kang,J. W. Spinuzzi,Dmitri A. Tenne,Evgeny Y. Tsymbal,Mark Rzchowski,Long Qing Chen,Jaichan Lee,Chang-Beom Eom +21 more
TL;DR: An isostructural, purely electronically driven metal-insulator transition is demonstrated in epitaxial heterostructures of an archetypal correlated material, vanadium dioxide, to provide insights into phase transitions of correlated materials and may aid the design of device functionalities.