215 citations · 1.4k across the 23 of their papers we have counts for
23 papers
Absence of localized electrons in KTaO interface superconductors
Xinqiang Cai, Jungho Kim, Leonardo Martinelli +19
Recently, an exciting discovery of orientation-dependent superconductivity was made in two-dimensional electron gas (2DEG) at the interfaces of LaAlO/KTaO (LAO/KTO) or EuO/…
Orientation-dependent electron-phonon coupling in interfacial superconductors LaAlO3/KTaO3
Xiaoyang Chen, Tianlun Yu, Yuan Liu +17
The emergent superconductivity at the LaAlO3/KTaO3 interfaces exhibits a mysterious dependence on the KTaO3 crystallographic orientations. Here we show, by soft X-ray angle-resolve…
Prevailing charge order in overdoped cuprates beyond the superconducting dome
Qizhi Li, Hsiao-Yu Huang, Tianshuang Ren +14
The extremely overdoped cuprates are generally considered to be Fermi liquid metals without exotic orders, whereas the underdoped cuprates harbor intertwined states. Contrary to th…
Superconductivity in epitaxially grown LaVO3/KTaO3(111) heterostructures
Yuan Liu, Zhongran Liu, Meng Zhang +3
Complex oxide heterointerfaces can host a rich of emergent phenomena, and epitaxial growth is usually at the heart of forming these interfaces. Recently, a strong crystalline-orien…
Surface charge writing and non-volatile control of superconductivity in LaAlO3/KTaO3(111) heterostructure
Siyuan Hong, Yanqiu Sun, Yuan Liu +2
The oxide interface between LaAlO3 and KTaO3(111) can host an electron gas that condenses into superconductivity at low temperatures. In this work, we demonstrate a local and non-v…
Emergence of high-temperature superconductivity at the interface of two Mott insulators
Lele Ju, Tianshuang Ren, Zhu Li +8
Interfacial superconductivity has manifested itself in various types of heterostructures: band insulator-band insulator, band insulator-Mott insulator, and Mott insulator-metal. We…
Non-universal current flow near the metal-insulator transition in an oxide interface
Eylon Persky, Naor Vardi, Ana Mafalda R. V. L. Monteiro +9
In systems near phase transitions, macroscopic properties often follow algebraic scaling laws, determined by the dimensionality and the underlying symmetries of the system. The eme…
Observation of two-dimensional superconductivity at the LaAlO3/KTaO3(110) heterointerface
Zheng Chen, Zhongran Liu, Yanqiu Sun +12
We report on the observation of a Tc ~0.9 K superconductivity at the interface between LaAlO3 film and the 5d transition-metal oxide KTaO3(110) single crystal. The interface shows…
Electric field control of disorder-tunable superconductivity and the emergence of quantum metal at an oxide interface
Zheng Chen, Yuan Liu, Hui Zhang +7
We report on an extraordinary field effect of the superconducting LaAlO3/KTaO3(111) interface with Tc ~2 K. By applying a gate voltage (VG) across KTaO3, the interface can be conti…
Electrostatic modulation of the lateral carrier density profile in field effect devices with non-linear dielectrics
Eylon Persky, Hyeok Yoon, Yanwu Xie +3
We study the effects of electrostatic gating on the lateral distribution of charge carriers in two dimensional devices, in a non-linear dielectric environment. We compute the charg…
Superconductivity in a misfit layered compound (SnSe)(NbSe)
Hua Bai, Xiaohui Yang, Yi Liu +8
The large size single crystals of (SnSe)(NbSe) misfit layered compound were grown and superconductivity with of 3.4 K was first discovered in this system. Powder…
The density and disorder tuned superconductor-metal transition in two dimensions
Zhuoyu Chen, Adrian G. Swartz, Hyeok Yoon +8
Quantum ground states which arise at atomically controlled oxide interfaces provide an opportunity to address key questions in condensed matter physics, including the nature of two…
Dual-Gate Modulation of Carrier Density and Disorder in an Oxide Two-Dimensional Electron System
Zhuoyu Chen, Hongtao Yuan, Yanwu Xie +5
Carrier density and disorder are two crucial parameters that control the properties of correlated two-dimensional electron systems. In order to disentangle their individual contrib…
Origin of interfacial conductivity at complex oxide heterointerfaces: possibility of electron transfer from water chemistry at surface oxygen vacancies
Meng Zhang, Zheng Chen, Baohua Mao +6
Variety of conducting heterointerfaces have been made between SrTiO3 substrates and thin capping layers of distinctly different oxide materials that can be classified into polar ba…
Imaging and tuning polarity at SrTiO3 domain walls
Yiftach Frenkel, Noam Haham, Yishai Shperber +7
Electrostatic fields tune the ground state of interfaces between complex oxide materials. Electronic properties, such as conductivity and superconductivity, can be tuned and then u…
Interfacial Multiferroics of TiO2/PbTiO3 Heterostructure Driven by Ferroelectric Polarization Discontinuity
Fang Wang, Zhaohui Ren, He Tian +6
Novel phenomena appear when two different oxide materials are combined together to form an interface. For example, at the interface of LaAlO3/SrTiO3, two dimensional conductive sta…
Ubiquitous strong electron phonon coupling at the interface of FeSe/SrTiO3
Chaofan Zhang, Zhongkai Liu, Zhuoyu Chen +17
The high temperature superconductivity in single-unit-cell (1UC) FeSe on SrTiO3 (STO)(001) and the observation of replica bands by angle-resolved photoemission spectroscopy (ARPES)…
Anisotropic transport at the LaAlO3/SrTiO3 interface explained by microscopic imaging of channel-flow over SrTiO3 domains
Yiftach Frenkel, Noam Haham, Yishai Shperber +6
Oxide interfaces, including the LaAlO3/SrTiO3 interface, have been a subject of intense interest for over a decade due to their rich physics and potential as low dimensional nanoel…
Visible light enhanced field effect at LaAlO3/SrTiO3 interface
Y. Lei, Y. Z. Chen, Y. W. Xie +8
Electrical field and light-illumination have been two most widely used stimuli in tuning the conductivity of semiconductor devices. Via capacitive effect electrical field modifies…
Quantum longitudinal and Hall transport at the LaAlO3/SrTiO3 interface at low electron densities
Yanwu Xie, Christopher Bell, Minu Kim +3
We examined the magneto-transport behavior of electrons confined at the conducting LaAlO3/SrTiO3 interface in the low sheet carrier density regime. We observed well resolved Shubni…
Locally enhanced conductivity due to the tetragonal domain structure in LaAlO/SrTiO heterointerfaces
Beena Kalisky, Eric M. Spanton, Hilary Noad +14
The ability to control materials properties through interface engineering is demonstrated by the appearance of conductivity at the interface of certain insulators, most famously th…
Control of electronic conduction at an oxide heterointerface using surface polar adsorbates
Yanwu Xie, Yasuyuki Hikita, Christopher Bell +1
The transfer of electrons between a solid surface and adsorbed atomic or molecular species is fundamental in natural and synthetic processes, being at the heart of most catalytic r…
Charge writing at the LaAlO3/SrTiO3 surface
Yanwu Xie, Christopher Bell, Takeaki Yajima +2
Biased conducting-tip atomic force microscopy (AFM) has been shown to write and erase nanoscale metallic lines at the LaAlO3/SrTiO3 interface. Using various AFM modes, we show the…