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2018 IEEE International Electron Devices Meeting (IEDM)最新文献

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Extendable and Manufacturable Volume-less Multi-Vt Solution for 7nm Technology Node and Beyond 适用于7nm及以上技术节点的可扩展和可制造的无体积Multi-Vt解决方案
Pub Date : 2018-12-01 DOI: 10.1109/IEDM.2018.8614518
R. Bao, Huimei Zhou, Miaomiao Wang, D. Guo, B. Haran, V. Narayanan, R. Divakaruni
We demonstrated more than 3 pairs of threshold voltage (Vt) devices by volume-less multiple Vt (multi-Vt) scheme plus dual work function metals (WFM) without performance and reliability degradation on 20nm gate length FinFET CMOS devices. Vt shifts over 200 mV were achieved for both nFET and pFET. The volume-less nature of this multi-Vt scheme relieves replacement metal gate (RMG) challenges and opens the path to offer multi-Vt solution for future highly scaled technologies.
我们在20nm栅极长度FinFET CMOS器件上,通过无体积多重Vt (multiple Vt)方案和双功功能金属(dual work function metals, WFM),展示了超过3对阈值电压(Vt)器件的性能和可靠性没有下降。fet和fet均实现了200 mV以上的Vt位移。这种多电压门方案的无体积特性减轻了更换金属门(RMG)的挑战,并为未来高度规模化的技术提供多电压门解决方案开辟了道路。
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引用次数: 2
High Voltage Generation Using Deep Trench Isolated Photodiodes in a Back Side Illuminated Process 在背面照明过程中使用深沟隔离光电二极管产生高压
Pub Date : 2018-12-01 DOI: 10.1109/IEDM.2018.8614656
F. Kaklin, J. Raynor, R. Henderson
We demonstrate passive high voltage generation using photodiodes biased in the photovoltaic region of operation. The photodiodes are integrated in a 90nm back side illuminated (BSI) deep trench isolation (DTI) capable imaging process technology. Four equal area, DTI separated arrays of photodiodes are implemented on a single die and connected using on-chip transmission gates (TG). The TGs control interconnects between the four arrays, connecting them in series or in parallel. A series configuration successfully generates an open-circuit voltage of 1.98V at 1klux. The full array generates 423nW/mm2 at 1klux of white LED illumination in series mode and 425nW/mm2 in parallel mode. Peak conversion efficiency is estimated at 16.1%, at 5.7klux white LED illumination.
我们演示了使用光电二极管偏置在光伏操作区域的无源高压发电。光电二极管集成在90nm背面照明(BSI)深沟隔离(DTI)成像工艺技术中。四个等面积、DTI分离的光电二极管阵列在单个芯片上实现,并使用片上传输门(TG)连接。tg控制四个阵列之间的互连,将它们串联或并联。串联配置成功地在1klux时产生1.98V的开路电压。整个阵列在串联模式下产生423nW/mm2的白光LED照明,在并联模式下产生425nW/mm2。在5.7klux白光LED照明下,峰值转换效率估计为16.1%。
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引用次数: 3
7nm FinFET Plasma Charge Recording Device 7nm FinFET等离子电荷记录装置
Pub Date : 2018-12-01 DOI: 10.1109/IEDM.2018.8614520
Yi-Pei Tsai, J. Shih, Y. King, C. Lin
A new wafer-level coupling plasma charge recorder fabricated with 7nm FinFET CMOS logic process is presented in this paper. This plasma ion charge recording device provides the historic and quantitative plasma ion charges of damascene metallization steps in advanced 7nm FinFET COMS logic processes. The high-resolution plasma ion recorder is formed by an accurate FinFET coupling structure to store the plasma ion level and distribution of the whole wafer. By a simple wafer-level WAT measurement, the promising plasma charge recording device can efficiently collect the accumulated ion charges, ion polarization, and tiny plasma fluctuation of each metallization process step in 7nm FinFET CMOS logic technologies, which definitely provides a superior device and method in developing a reliable and non-latent plasma damage process for 7nm FinFET technology and beyond.
本文介绍了一种采用7nm FinFET CMOS逻辑工艺制作的新型晶圆级耦合等离子体电荷记录仪。该等离子体离子电荷记录装置提供了先进的7nm FinFET COMS逻辑过程中damascene金属化步骤的历史性和定量等离子体离子电荷。高分辨率等离子体离子记录仪由精确的FinFET耦合结构组成,用于存储整个晶圆的等离子体离子水平和分布。通过简单的晶圆级WAT测量,该等离子体电荷记录装置可以有效地收集7nm FinFET CMOS逻辑技术中各金属化工艺步骤中积累的离子电荷、离子极化和微小的等离子体波动,为开发可靠且无潜在等离子体损伤的7nm FinFET工艺提供了优越的装置和方法。
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引用次数: 4
On the Microscopic Origin of Negative Capacitance in Ferroelectric Materials: A Toy Model 铁电材料负电容的微观成因:一个玩具模型
Pub Date : 2018-12-01 DOI: 10.1109/IEDM.2018.8614574
A. Khan
We present a simple, physical explanation of underlying microscopic mechanisms that lead to the emergence of the negative phenomena in ferroelectric materials. The material presented herein is inspired by the pedagogical treatment of ferroelectricity by Feynman and Kittel. In a toy model consisting of a linear one-dimensional chain of polarizable units (i.e., atoms or unit cells of a crystal structure), we show how simple electrostatic interactions can create a microscopic, positive feedback action that leads to negative capacitance phenomena. We point out that the unstable negative capacitance effect has its origin in the so called “polarization catastrophe” phenomenon which is essential to explain displacement type ferroelectrics. Furthermore, the fact that even in the negative capacitance state, the individual dipole always aligns along the direction of the local electrical field not opposite is made clear through the toy model. Finally, how the “$S$”-shaped polarization vs. applied electric field curve emerges out of the electrostatic interactions in an ordered set of polarizable units is shown.
我们提出了一个简单的,导致铁电材料中出现负现象的潜在微观机制的物理解释。本文介绍的材料受到费曼和基特尔对铁电性的教学处理的启发。在一个由线性一维极化单元链(即原子或晶体结构的单元)组成的玩具模型中,我们展示了简单的静电相互作用如何产生微观的正反馈作用,从而导致负电容现象。指出不稳定负电容效应的根源在于解释位移型铁电体的“极化突变”现象。此外,通过玩具模型清楚地表明,即使在负电容状态下,单个偶极子也总是沿着局部电场的方向排列,而不是相反。最后,展示了“$S$”形极化与外加电场曲线是如何在有序的极化单元集中的静电相互作用中出现的。
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引用次数: 10
Scaled spintronic logic device based on domain wall motion in magnetically interconnected tunnel junctions 基于磁互联隧道结畴壁运动的缩放自旋电子逻辑器件
Pub Date : 2018-12-01 DOI: 10.1109/IEDM.2018.8614587
E. Raymenants, D. Wan, S. Couet, O. Zografos, V. Nguyen, A. Vaysset, L. Souriau, A. Thiam, M. Manfrini, S. Brus, M. Heyns, D. Mocuta, D. Nikonov, S. Manipatruni, I. Young, T. Devolder, I. Radu
We present a scaled device based on magnetic domain wall (DW) transport for logic applications. The device consists of multiple magnetic tunnel junctions (MTJs) connected by the same magnetic free layer (FL). Magnetic domain walls are injected by spin-transfer torque (STT) at the input MTJs and are sensed by tunneling magnetoresistance (TMR) at the output MTJ after propagation through the FL. Logic functions can be built by merging several domain walls. By enabling real-time detection of long range DW transport, we demonstrate a spintronic component which can be used for either Boolean or non-Boolean logic.
我们提出了一种基于磁畴壁输运的逻辑器件。该器件由多个磁性隧道结(mtj)组成,由相同的磁性自由层(FL)连接。磁畴壁通过自旋传递转矩(STT)注入到输入端MTJ,通过FL传播后在输出端MTJ通过隧穿磁阻(TMR)检测。通过合并多个磁畴壁可以构建逻辑函数。通过实现远程DW传输的实时检测,我们展示了一个可用于布尔或非布尔逻辑的自旋电子组件。
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引用次数: 8
Binary and Ternary True Random Number Generators Based on Spin Orbit Torque 基于自旋轨道扭矩的二、三元真随机数发生器
Pub Date : 2018-12-01 DOI: 10.1109/IEDM.2018.8614638
Huiming Chen, Shuai Zhang, N. Xu, Min Song, Xin Li, Ruofan Li, Yi Zeng, Jeongmin Hong, L. You
In this work, we have experimentally demonstrated the binary- and ternary-True Random Number Generators (B-TRNG and T-TRNG) based on the stochastic switching characteristics of the nano-scale Ta/CoFeB/MgO heterostructures with perpendicular magnetization anisotropy. For the first time, the random code generation utilizes the spin orbit torque (SOT) induced by current flowing in the heavy metal underneath the CoFeB layer. The 3-XOR post-processed random binary codes have passed the NIST SP800-22 test. Furthermore, the T-TRNG in the same ferromagnetic heterostructure with dual magnetic domains are also demonstrated, which provides a higher security level than its B-TRNG counterpart.
在这项工作中,我们通过实验证明了基于具有垂直磁化各向异性的纳米级Ta/CoFeB/MgO异质结构的随机开关特性的二元和三元真随机数发生器(B-TRNG和T-TRNG)。随机码的生成首次利用了CoFeB层下重金属电流诱导的自旋轨道转矩(SOT)。3-XOR后处理随机二进制码已通过NIST SP800-22测试。此外,具有双磁畴的相同铁磁异质结构中的T-TRNG也被证明具有比B-TRNG更高的安全性。
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引用次数: 12
Highly Reliable Ferroelectric Hf0.5Zr0.5O2 Film with Al Nanoclusters Embedded by Novel Sub-Monolayer Doping Technique 新型亚单层掺杂技术嵌入Al纳米团簇的高可靠铁电膜Hf0.5Zr0.5O2
Pub Date : 2018-12-01 DOI: 10.1109/IEDM.2018.8614682
T. Yamaguchi, T. Zhang, K. Omori, Y. Shimada, Y. Kunimune, T. Ide, M. Inoue, M. Matsuura
Highly reliable ferroelectric (FE) Hf0.5Zr0.5O2 (HZO) film with Al nanoclusters embedded by sub-monolayer doping technique is demonstrated for the first time. Al nanoclusters increase the remnant polarization (Pr) and reduce the voltage necessary for polarization switching. Furthermore, the program and erase endurance at the cycle of more than 250k and the Pr retention at 85°C for 10 years are achieved. Al nanoclusters are formed by the partial oxidation of submonolayer metallic Al embedded in HZO films. Al nanoclusters enhance the large grain growth of orthorhombic-phase HZO during FE-HZO crystallization annealing. The reduction of grain boundaries caused by the large grain growth with Al nanoclusters effectively reduces the leakage current in the HZO film. As a result, reliability of the FE HZO film is significantly improved.
采用亚单层掺杂技术首次制备了高可靠性的铁电(FE) Hf0.5Zr0.5O2 (HZO)薄膜。Al纳米团簇增加了残余极化(Pr),降低了极化开关所需的电压。此外,程序和擦除耐久性在超过250k的循环和Pr保持在85°C为10年。铝纳米团簇是由嵌入在HZO薄膜中的亚单层金属铝的部分氧化形成的。在FE-HZO结晶退火过程中,Al纳米团簇促进了正交相HZO的大晶粒生长。Al纳米团簇的大晶粒生长导致的晶界减小有效地降低了HZO薄膜中的泄漏电流。结果表明,FE HZO薄膜的可靠性得到了显著提高。
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引用次数: 12
Room Temperature Highly Efficient Topological Insulator/Mo/CoFeB Spin-Orbit Torque Memory with Perpendicular Magnetic Anisotropy 具有垂直磁各向异性的室温高效拓扑绝缘体/Mo/CoFeB自旋轨道转矩存储器
Pub Date : 2018-12-01 DOI: 10.1109/IEDM.2018.8614499
Qiming Shao, Hao Wu, Quanjun Pan, Peng Zhang, L. Pan, Kin L. Wong, X. Che, Kang L. Wang
Spin-orbit torque (SOT)-MRAM is a promising candidate for future nonvolatile memory technology. Finding materials that have large SOT efficiency $(xi_{text{DL}})$ is critical for developing the SOT-MRAM. Topological insulators (TIs) have been shown to exhibit giant $xi_{text{DL}}$ (>1) at room temperature. However, integration of high $xi_{text{DL}}$ TIs with CoFeB with perpendicular magnetic anisotropy (PMA) at room temperature (RT) has not been achieved. In this work, we demonstrate a record-high $xi_{text{DL}}$ (∼2.66) in the (BiSb)2Te3 with PMA CoFeB and achieve magnetization switching with TI current density as low as $3times 10^{9}mathrm{A}/mathrm{m}^{2}$ at RT. For the first time, we propose to insert a light metal spacer between TI and CoFeB to achieve resistance matching and thus reduce write energy. We show that without insertion, TI/CoFeB show in-plane magnetic anisotropy but TIs show high $xi_{text{DL}}$, consistent with previous reports. We then insert a Mo spacer to achieve PMA at RT. We accurately determine the $xi_{text{DL}}$ using both second harmonic method and MOKE for the first time. We investigate the SOT-driven switching and discover a memristor-like behavior in the TI/Mo/CoFeB.
自旋轨道转矩(SOT)-MRAM是一种很有前途的非易失性存储技术。寻找具有高SOT效率的材料$(xi_{text{DL}})$对于开发SOT- mram至关重要。拓扑绝缘体(ti)在室温下表现出巨大的$xi_{text{DL}}$(>1)。然而,在室温(RT)下,高$xi_{text{DL}}$ ti与具有垂直磁各向异性(PMA)的CoFeB的积分尚未实现。在这项工作中,我们用PMA CoFeB在(BiSb)2Te3中展示了创纪录的$xi_{text{DL}}$(~ 2.66),并在rt下实现了TI电流密度低至$3 × 10^{9} mathm {a}/ mathm {m}^{2}$的磁化开关。我们首次提出在TI和CoFeB之间插入一个轻金属间隔器,以实现电阻匹配,从而降低写入能量。我们发现,在没有插入的情况下,TI/CoFeB表现出面内磁各向异性,但TI表现出高磁各向异性,与之前的报道一致。然后,我们插入Mo间隔器以实现rt的PMA。我们首次使用二次谐波方法和MOKE方法准确地确定了$xi_{text{DL}}$。我们研究了sot驱动开关,并在TI/Mo/CoFeB中发现了类似忆阻器的行为。
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引用次数: 16
First Principles Study of Memory Selectors using Heterojunctions of 2D Layered Materials 基于二维层状材料异质结的记忆选择器第一性原理研究
Pub Date : 2018-12-01 DOI: 10.1109/IEDM.2018.8614711
Linsen Li, B. Magyari-Köpe, Ching-Hua Wang, S. Deshmukh, Zizhen Jiang, Haitong Li, Yi Yang, Huanglong Li, H. Tian, E. Pop, T. Ren, H. Wong
Two-dimensional (2D) tunnel heterojunctions with an H-shaped energy barrier could serve as ultrathin memory selectors with good symmetry, non-linearity, and high endurance. Atomically thin 2D layered materials can potentially deliver high on-state tunneling current density. We explore the design space for H-shaped memory selectors using heterojunctions of 2D layered materials, using physical modeling and first principles density functional theory (DFT) quantum transport simulations. The difference between simulations and the few existing experiments is also discussed. A selector must be designed to suit the resistive memory (1R) characteristics. We evaluate the H-shaped selector in the one-selector-one-resistor (1S1R) configuration and provide design guidelines for the heterojunction (metal/nL hBN/nL 2D material/nL hBN/metal) design to match with the 1R characteristics.
具有h型能垒的二维隧道异质结可以作为超薄记忆选择器,具有良好的对称性、非线性和高耐久性。原子薄的二维层状材料可以潜在地提供高的导通隧道电流密度。我们利用物理建模和第一性原理密度泛函理论(DFT)量子输运模拟,探索了利用二维层状材料异质结的h形记忆选择器的设计空间。讨论了模拟结果与现有实验结果的差异。选择器必须设计成适合电阻记忆(1R)特性。我们评估了一选择器一电阻(1S1R)配置中的h形选择器,并为异质结(金属/nL hBN/nL 2D材料/nL hBN/金属)设计提供了与1R特性匹配的设计指南。
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引用次数: 2
Scalable quantum computing with ion-implanted dopant atoms in silicon 硅中离子注入掺杂原子的可扩展量子计算
Pub Date : 2018-12-01 DOI: 10.1109/IEDM.2018.8614498
A. Morello, G. Tosi, F. Mohiyaddin, V. Schmitt, V. Mourik, T. Botzem, A. Laucht, J. Pla, S. Tenberg, R. Savytskyy, M. Ma̧dzik, F. Hudson, A. Dzurak, K. Itoh, A. Jakob, B. C. Johnson, J. McCallum, D. Jamieson
We present a scalable strategy to manufacture quantum computer devices, by encoding quantum information in the combined electron-nuclear spin state of individual ion-implanted phosphorus dopant atoms in silicon. Our strategy allows a typical pitch between quantum bits of order 200 nm, and retains compatibility with the standard fabrication processes adopted in classical CMOS nanoelectronic devices. We theoretically predict fast and high-fidelity quantum logic operations, and present preliminary experimental progress towards the realization of a “flip-flop” qubit system.
我们提出了一种可扩展的制造量子计算机设备的策略,通过在硅中单个离子注入磷掺杂原子的电子-核组合自旋状态下编码量子信息。我们的策略允许200纳米量级量子比特之间的典型间距,并保持与经典CMOS纳米电子器件采用的标准制造工艺的兼容性。我们从理论上预测了快速和高保真的量子逻辑运算,并提出了实现“触发器”量子比特系统的初步实验进展。
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引用次数: 9
期刊
2018 IEEE International Electron Devices Meeting (IEDM)
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