Spin-induced anomalous magnetoresistance at the (100) surface of hydrogen-terminated diamond

Yamaguchi Takahide; Yosuke Sasama; Masashi Tanaka; Hiroyuki Takeya; Yoshihiko Takano; Taisuke Kageura; Hiroshi Kawarada

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Spin-induced anomalous magnetoresistance at the (100) surface of hydrogen-terminated diamond

机译：自旋诱导的氢终止金刚石（100）表面的异常磁阻

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We report magnetoresistance measurements of hydrogen-terminated (lOO)-oriented diamond surfaces wherein an ionic-liquid-gated field-effect-transistor technique was used to make hole carriers accumulate. Unexpectedly, the observed magnetoresistance is positive within the range of 2＜T＜10 K and -7＜B＜7 T, in striking contrast to the negative magnetoresistance previously detected for similar devices with (111)-oriented diamond surfaces. Furthermore, we find that (1) the magnetoresistance is orders of magnitude larger than that of the classical orbital magnetoresistance; (2) the magnetoresistance is nearly independent of the direction of the applied magnetic field; and (3) for the in-plane field, the magnetoresistance ratio, defined as [ρ(B) - ρ(0)]/ρ(0), follows a universal function of B/T. These results indicate that the spin degree of freedom of hole carriers plays an important role in the surface conductivity of hydrogen-terminated (100) diamond.

机译：我们报告了氢终止（100）取向的金刚石表面的磁阻测量，其中使用离子液体门控场效应晶体管技术来使空穴载流子积累。出乎意料的是，在2 ＜T ＜10 K和-7 ＜B ＜7 T的范围内，观察到的磁阻为正，与先前针对具有（111）取向金刚石表面的类似器件所检测到的负磁阻形成鲜明对比。此外，我们发现（1）磁阻比经典轨道磁阻大几个数量级；（2）磁阻几乎与所施加磁场的方向无关；（3）对于面内磁场，定义为[ρ（B）-ρ（0）] /ρ（0）的磁阻比遵循B / T的通用函数。这些结果表明，空穴载流子的自旋自由度在氢封端（100）金刚石的表面电导率中起着重要作用。

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《Physical review》 |2016年第16期|161301.1-161301.5|共5页
作者
Yamaguchi Takahide; Yosuke Sasama; Masashi Tanaka; Hiroyuki Takeya; Yoshihiko Takano; Taisuke Kageura; Hiroshi Kawarada;
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National Institute for Materials Science, Sengen, Tsukuba 305-0047, Japan,University of Tsukuba, Tennodai, Tsukuba 305-8571, Japan;

National Institute for Materials Science, Sengen, Tsukuba 305-0047, Japan,University of Tsukuba, Tennodai, Tsukuba 305-8571, Japan;

National Institute for Materials Science, Sengen, Tsukuba 305-0047, Japan;

National Institute for Materials Science, Sengen, Tsukuba 305-0047, Japan;

National Institute for Materials Science, Sengen, Tsukuba 305-0047, Japan,University of Tsukuba, Tennodai, Tsukuba 305-8571, Japan;

Waseda University, Okubo, Shinjuku, Tokyo 169-8555, Japan;

Waseda University, Okubo, Shinjuku, Tokyo 169-8555, Japan;

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1. Spin-induced anomalous magnetoresistance at the (100) surface of hydrogen-terminated diamond [J] . Takahide Yamaguchi, Sasama Yosuke, Tanaka Masashi, Physical review, B . 2016,第16期

机译：自旋诱导的氢终止金刚石（100）表面的异常磁阻
2. High-resolution surface-sensitive C 1s core-level spectra of clean and hydrogen-terminated diamond (100) and (111) surfaces [J] . Graupner R., Ristein J., Ley L., Physical Review, B. Condensed Matter . 1998,第19期

机译：高分辨率表面敏感性C 1S清洁和氢封端的金刚石（100）和（111）表面的核心级光谱
3. Atomic-resolution imaging of clean and hydrogen-terminated C(100)-(2×l) diamond surfaces using noncontact AFM [J] . M. Nimmrich, M. Kittelmann, P. Rahe, Physical review . 2010,第20期

机译：使用非接触式AFM清洁和氢终止的C（100）-（2×l）金刚石表面的原子分辨率成像
4. Activation of the Hydrogen-Terminated Diamond 100 by Hydrogen Atoms and Hydroxyl Groups [C] . Xiaogang Jian, Jibo Hu, Xin Huang, International Conference on Green Composite Materials and Nanotechnology;International Conference on Polymer Synthesis and Application;International Conference on Composite Materials and Metallurgical Engineering . 2020

机译：通过氢原子和羟基激活氢封端的金刚石100
5. Atomic interactions at the (100) diamond surface and the impact of surface and interface changes on the electronic transport properties. [D] . Deferme, Wim. 2009

机译：（100）金刚石表面的原子相互作用以及表面和界面的影响会改变电子传输性能。
6. Surface States of (100) O-Terminated Diamond: Towards Other 1 × 1:O Reconstruction Models [O] . Gonzalo Alba, M. Pilar Villar, Rodrigo Alcántara, 2020

机译：（100）O端钻石的表面状态：朝其他1×1：O重建模型的方向
7. Atomic-resolution imaging of clean and hydrogen-terminated C(100)-(2×1)diamond surfaces using noncontact AFM [O] . M. Nimmrich, M. Kittelmann, P. Rahe, 2010

机译：使用Noncantact AFM的清洁和氢封端的C（100） - （2×1）金刚石表面的原子分辨率成像
8. Fluoroalkyl Iodide Photodecomposition on Diamond(100)-An Efficient Route to theFluorination of Diamond Surfaces [R] . Smentkowski, V. S., Yates, J. T. 1996

机译：金刚石上的氟代烷基碘化物光分解（100） - 一种有效的金刚石表面氟化途径

Spin-induced anomalous magnetoresistance at the (100) surface of hydrogen-terminated diamond

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